./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/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_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/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_354b4d80-0975-403a-baa6-ced9e3ac2707/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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:08:34,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:08:34,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:08:34,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:08:34,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:08:34,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:08:34,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:08:34,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:08:34,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:08:34,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:08:34,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:08:34,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:08:34,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:08:34,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:08:34,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:08:34,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:08:34,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:08:34,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:08:34,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:08:34,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:08:34,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:08:34,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:08:34,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:08:34,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:08:34,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:08:34,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:08:34,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:08:34,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:08:34,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:08:34,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:08:34,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:08:34,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:08:34,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:08:34,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:08:34,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:08:34,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:08:34,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:08:34,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:08:34,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:08:34,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:08:34,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:08:34,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:08:34,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:08:34,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:08:34,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:08:34,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:08:34,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:08:34,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:08:34,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:08:34,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:08:34,360 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:08:34,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:08:34,361 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:08:34,361 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:08:34,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:08:34,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:08:34,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:08:34,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:08:34,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:08:34,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:08:34,362 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:08:34,362 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:08:34,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:08:34,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:08:34,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:08:34,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:08:34,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:08:34,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:08:34,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:08:34,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:08:34,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:08:34,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:08:34,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:08:34,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:08:34,364 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:08:34,365 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:08:34,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:08:34,365 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_354b4d80-0975-403a-baa6-ced9e3ac2707/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-11-18 20:08:34,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:08:34,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:08:34,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:08:34,717 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:08:34,718 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:08:34,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-18 20:08:34,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/data/6c9c1683e/7fb084c76e3a4f58818708889583a422/FLAGadcd3eff2 [2022-11-18 20:08:35,283 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:08:35,291 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-18 20:08:35,300 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/data/6c9c1683e/7fb084c76e3a4f58818708889583a422/FLAGadcd3eff2 [2022-11-18 20:08:35,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/data/6c9c1683e/7fb084c76e3a4f58818708889583a422 [2022-11-18 20:08:35,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:08:35,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:08:35,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:08:35,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:08:35,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:08:35,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:08:35" (1/1) ... [2022-11-18 20:08:35,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e85ead1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:35, skipping insertion in model container [2022-11-18 20:08:35,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:08:35" (1/1) ... [2022-11-18 20:08:35,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:08:35,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:08:36,032 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_354b4d80-0975-403a-baa6-ced9e3ac2707/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-18 20:08:36,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:08:36,064 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:08:36,092 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_354b4d80-0975-403a-baa6-ced9e3ac2707/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-18 20:08:36,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:08:36,114 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:08:36,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:36 WrapperNode [2022-11-18 20:08:36,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:08:36,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:08:36,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:08:36,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:08:36,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:36" (1/1) ... [2022-11-18 20:08:36,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:36" (1/1) ... [2022-11-18 20:08:36,220 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 479 [2022-11-18 20:08:36,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:08:36,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:08:36,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:08:36,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:08:36,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:36" (1/1) ... [2022-11-18 20:08:36,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:36" (1/1) ... [2022-11-18 20:08:36,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:36" (1/1) ... [2022-11-18 20:08:36,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:36" (1/1) ... [2022-11-18 20:08:36,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:36" (1/1) ... [2022-11-18 20:08:36,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:36" (1/1) ... [2022-11-18 20:08:36,271 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:36" (1/1) ... [2022-11-18 20:08:36,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:36" (1/1) ... [2022-11-18 20:08:36,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:08:36,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:08:36,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:08:36,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:08:36,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:36" (1/1) ... [2022-11-18 20:08:36,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:08:36,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:36,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:08:36,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:08:36,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:08:36,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:08:36,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:08:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:08:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:08:36,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:08:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:08:36,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:08:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:08:36,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:08:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:08:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:08:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:08:36,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:08:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:08:36,397 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:08:36,571 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:08:36,573 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:08:37,422 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:08:37,437 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:08:37,437 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 20:08:37,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:08:37 BoogieIcfgContainer [2022-11-18 20:08:37,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:08:37,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:08:37,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:08:37,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:08:37,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:08:35" (1/3) ... [2022-11-18 20:08:37,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790b95a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:08:37, skipping insertion in model container [2022-11-18 20:08:37,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:08:36" (2/3) ... [2022-11-18 20:08:37,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790b95a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:08:37, skipping insertion in model container [2022-11-18 20:08:37,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:08:37" (3/3) ... [2022-11-18 20:08:37,456 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-11-18 20:08:37,465 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:08:37,488 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:08:37,488 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-18 20:08:37,488 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:08:37,789 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:08:37,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 620 places, 657 transitions, 1338 flow [2022-11-18 20:08:38,180 INFO L130 PetriNetUnfolder]: 47/654 cut-off events. [2022-11-18 20:08:38,180 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:08:38,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 654 events. 47/654 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1082 event pairs, 0 based on Foata normal form. 0/565 useless extension candidates. Maximal degree in co-relation 551. Up to 2 conditions per place. [2022-11-18 20:08:38,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 620 places, 657 transitions, 1338 flow [2022-11-18 20:08:38,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 597 places, 633 transitions, 1281 flow [2022-11-18 20:08:38,237 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:08:38,247 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;@1ab0103c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:08:38,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2022-11-18 20:08:38,262 INFO L130 PetriNetUnfolder]: 4/101 cut-off events. [2022-11-18 20:08:38,262 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:08:38,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:38,264 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] [2022-11-18 20:08:38,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:08:38,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:38,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1133195272, now seen corresponding path program 1 times [2022-11-18 20:08:38,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:38,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747642817] [2022-11-18 20:08:38,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:38,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:38,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:38,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747642817] [2022-11-18 20:08:38,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747642817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:38,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:38,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:08:38,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23783988] [2022-11-18 20:08:38,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:39,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:08:39,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:39,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:08:39,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:08:39,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 657 [2022-11-18 20:08:39,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 633 transitions, 1281 flow. Second operand has 5 states, 5 states have (on average 521.8) internal successors, (2609), 5 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:39,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:39,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 657 [2022-11-18 20:08:39,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:39,783 INFO L130 PetriNetUnfolder]: 97/1382 cut-off events. [2022-11-18 20:08:39,784 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-11-18 20:08:39,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 1382 events. 97/1382 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7312 event pairs, 39 based on Foata normal form. 54/1225 useless extension candidates. Maximal degree in co-relation 1050. Up to 150 conditions per place. [2022-11-18 20:08:39,808 INFO L137 encePairwiseOnDemand]: 619/657 looper letters, 80 selfloop transitions, 5 changer transitions 16/603 dead transitions. [2022-11-18 20:08:39,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 603 transitions, 1423 flow [2022-11-18 20:08:39,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:08:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:08:39,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3239 transitions. [2022-11-18 20:08:39,838 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.821664129883308 [2022-11-18 20:08:39,839 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3239 transitions. [2022-11-18 20:08:39,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3239 transitions. [2022-11-18 20:08:39,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:39,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3239 transitions. [2022-11-18 20:08:39,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 539.8333333333334) internal successors, (3239), 6 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:39,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:39,923 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:39,925 INFO L175 Difference]: Start difference. First operand has 597 places, 633 transitions, 1281 flow. Second operand 6 states and 3239 transitions. [2022-11-18 20:08:39,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 603 transitions, 1423 flow [2022-11-18 20:08:39,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 603 transitions, 1414 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:08:39,944 INFO L231 Difference]: Finished difference. Result has 595 places, 587 transitions, 1190 flow [2022-11-18 20:08:39,947 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1190, PETRI_PLACES=595, PETRI_TRANSITIONS=587} [2022-11-18 20:08:39,951 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -2 predicate places. [2022-11-18 20:08:39,951 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 587 transitions, 1190 flow [2022-11-18 20:08:39,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 521.8) internal successors, (2609), 5 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:39,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:39,953 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] [2022-11-18 20:08:39,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:08:39,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:08:39,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:39,955 INFO L85 PathProgramCache]: Analyzing trace with hash -769314044, now seen corresponding path program 1 times [2022-11-18 20:08:39,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:39,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001725100] [2022-11-18 20:08:39,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:39,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:40,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:40,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:40,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001725100] [2022-11-18 20:08:40,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001725100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:40,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:40,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:40,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994477289] [2022-11-18 20:08:40,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:40,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:40,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:40,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:40,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:40,090 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 598 out of 657 [2022-11-18 20:08:40,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 587 transitions, 1190 flow. Second operand has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:40,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:40,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 598 of 657 [2022-11-18 20:08:40,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:40,603 INFO L130 PetriNetUnfolder]: 97/1364 cut-off events. [2022-11-18 20:08:40,604 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-18 20:08:40,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 1364 events. 97/1364 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7286 event pairs, 39 based on Foata normal form. 0/1171 useless extension candidates. Maximal degree in co-relation 1395. Up to 91 conditions per place. [2022-11-18 20:08:40,626 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 21 selfloop transitions, 3 changer transitions 0/585 dead transitions. [2022-11-18 20:08:40,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 585 transitions, 1234 flow [2022-11-18 20:08:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:08:40,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:08:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2418 transitions. [2022-11-18 20:08:40,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200913242009132 [2022-11-18 20:08:40,633 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2418 transitions. [2022-11-18 20:08:40,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2418 transitions. [2022-11-18 20:08:40,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:40,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2418 transitions. [2022-11-18 20:08:40,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:40,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:40,649 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:40,649 INFO L175 Difference]: Start difference. First operand has 595 places, 587 transitions, 1190 flow. Second operand 4 states and 2418 transitions. [2022-11-18 20:08:40,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 585 transitions, 1234 flow [2022-11-18 20:08:40,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 585 transitions, 1224 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:08:40,661 INFO L231 Difference]: Finished difference. Result has 575 places, 585 transitions, 1182 flow [2022-11-18 20:08:40,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1182, PETRI_PLACES=575, PETRI_TRANSITIONS=585} [2022-11-18 20:08:40,663 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -22 predicate places. [2022-11-18 20:08:40,663 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 585 transitions, 1182 flow [2022-11-18 20:08:40,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:40,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:40,666 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] [2022-11-18 20:08:40,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:08:40,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:08:40,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:40,667 INFO L85 PathProgramCache]: Analyzing trace with hash 793945238, now seen corresponding path program 1 times [2022-11-18 20:08:40,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:40,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504883716] [2022-11-18 20:08:40,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:40,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:40,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:40,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504883716] [2022-11-18 20:08:40,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504883716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:40,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:40,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:40,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859974909] [2022-11-18 20:08:40,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:40,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:40,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:40,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:40,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:40,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-18 20:08:40,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 585 transitions, 1182 flow. Second operand has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:40,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:40,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-18 20:08:40,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:41,281 INFO L130 PetriNetUnfolder]: 35/1014 cut-off events. [2022-11-18 20:08:41,281 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2022-11-18 20:08:41,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 1014 events. 35/1014 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3379 event pairs, 0 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 1058. Up to 44 conditions per place. [2022-11-18 20:08:41,298 INFO L137 encePairwiseOnDemand]: 637/657 looper letters, 58 selfloop transitions, 14 changer transitions 0/616 dead transitions. [2022-11-18 20:08:41,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 616 transitions, 1394 flow [2022-11-18 20:08:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:08:41,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:08:41,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3003 transitions. [2022-11-18 20:08:41,306 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9141552511415525 [2022-11-18 20:08:41,307 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3003 transitions. [2022-11-18 20:08:41,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3003 transitions. [2022-11-18 20:08:41,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:41,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3003 transitions. [2022-11-18 20:08:41,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:41,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:41,325 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:41,326 INFO L175 Difference]: Start difference. First operand has 575 places, 585 transitions, 1182 flow. Second operand 5 states and 3003 transitions. [2022-11-18 20:08:41,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 616 transitions, 1394 flow [2022-11-18 20:08:41,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 616 transitions, 1388 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:08:41,338 INFO L231 Difference]: Finished difference. Result has 579 places, 596 transitions, 1280 flow [2022-11-18 20:08:41,339 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1280, PETRI_PLACES=579, PETRI_TRANSITIONS=596} [2022-11-18 20:08:41,342 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -18 predicate places. [2022-11-18 20:08:41,342 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 596 transitions, 1280 flow [2022-11-18 20:08:41,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:41,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:41,344 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] [2022-11-18 20:08:41,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:08:41,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:08:41,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:41,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1600508096, now seen corresponding path program 1 times [2022-11-18 20:08:41,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:41,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101651746] [2022-11-18 20:08:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:41,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:41,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:41,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101651746] [2022-11-18 20:08:41,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101651746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:41,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:41,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:08:41,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869759649] [2022-11-18 20:08:41,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:41,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:08:41,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:41,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:08:41,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:08:41,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 657 [2022-11-18 20:08:41,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 596 transitions, 1280 flow. Second operand has 8 states, 8 states have (on average 493.25) internal successors, (3946), 8 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:41,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:41,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 657 [2022-11-18 20:08:41,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:42,547 INFO L130 PetriNetUnfolder]: 192/2558 cut-off events. [2022-11-18 20:08:42,548 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-18 20:08:42,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2982 conditions, 2558 events. 192/2558 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 18459 event pairs, 78 based on Foata normal form. 0/2187 useless extension candidates. Maximal degree in co-relation 1435. Up to 277 conditions per place. [2022-11-18 20:08:42,581 INFO L137 encePairwiseOnDemand]: 645/657 looper letters, 110 selfloop transitions, 11 changer transitions 0/597 dead transitions. [2022-11-18 20:08:42,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 597 transitions, 1521 flow [2022-11-18 20:08:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:08:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:08:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4518 transitions. [2022-11-18 20:08:42,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7640791476407914 [2022-11-18 20:08:42,591 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4518 transitions. [2022-11-18 20:08:42,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4518 transitions. [2022-11-18 20:08:42,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:42,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4518 transitions. [2022-11-18 20:08:42,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 502.0) internal successors, (4518), 9 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:42,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:42,619 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:42,619 INFO L175 Difference]: Start difference. First operand has 579 places, 596 transitions, 1280 flow. Second operand 9 states and 4518 transitions. [2022-11-18 20:08:42,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 597 transitions, 1521 flow [2022-11-18 20:08:42,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 597 transitions, 1512 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-18 20:08:42,632 INFO L231 Difference]: Finished difference. Result has 587 places, 595 transitions, 1292 flow [2022-11-18 20:08:42,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1292, PETRI_PLACES=587, PETRI_TRANSITIONS=595} [2022-11-18 20:08:42,634 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -10 predicate places. [2022-11-18 20:08:42,634 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 595 transitions, 1292 flow [2022-11-18 20:08:42,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 493.25) internal successors, (3946), 8 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:42,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:42,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:42,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:08:42,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:08:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash -861806634, now seen corresponding path program 1 times [2022-11-18 20:08:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:42,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673762014] [2022-11-18 20:08:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:42,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:42,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:42,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673762014] [2022-11-18 20:08:42,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673762014] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:42,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5323335] [2022-11-18 20:08:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:42,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:42,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:42,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:42,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:08:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:42,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:08:42,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:43,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:43,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5323335] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:43,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:08:43,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:08:43,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012880978] [2022-11-18 20:08:43,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:43,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:08:43,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:43,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:08:43,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:08:43,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-18 20:08:43,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 595 transitions, 1292 flow. Second operand has 12 states, 12 states have (on average 587.6666666666666) internal successors, (7052), 12 states have internal predecessors, (7052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:43,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:43,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-18 20:08:43,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:44,190 INFO L130 PetriNetUnfolder]: 85/2293 cut-off events. [2022-11-18 20:08:44,191 INFO L131 PetriNetUnfolder]: For 53/63 co-relation queries the response was YES. [2022-11-18 20:08:44,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2582 conditions, 2293 events. 85/2293 cut-off events. For 53/63 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 12864 event pairs, 0 based on Foata normal form. 9/2029 useless extension candidates. Maximal degree in co-relation 2277. Up to 34 conditions per place. [2022-11-18 20:08:44,222 INFO L137 encePairwiseOnDemand]: 634/657 looper letters, 108 selfloop transitions, 61 changer transitions 0/713 dead transitions. [2022-11-18 20:08:44,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 713 transitions, 1974 flow [2022-11-18 20:08:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:08:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:08:44,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 10708 transitions. [2022-11-18 20:08:44,242 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9054625401657365 [2022-11-18 20:08:44,242 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 10708 transitions. [2022-11-18 20:08:44,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 10708 transitions. [2022-11-18 20:08:44,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:44,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 10708 transitions. [2022-11-18 20:08:44,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 594.8888888888889) internal successors, (10708), 18 states have internal predecessors, (10708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:44,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 657.0) internal successors, (12483), 19 states have internal predecessors, (12483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:44,293 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 657.0) internal successors, (12483), 19 states have internal predecessors, (12483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:44,294 INFO L175 Difference]: Start difference. First operand has 587 places, 595 transitions, 1292 flow. Second operand 18 states and 10708 transitions. [2022-11-18 20:08:44,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 713 transitions, 1974 flow [2022-11-18 20:08:44,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 713 transitions, 1948 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 20:08:44,308 INFO L231 Difference]: Finished difference. Result has 601 places, 637 transitions, 1633 flow [2022-11-18 20:08:44,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1633, PETRI_PLACES=601, PETRI_TRANSITIONS=637} [2022-11-18 20:08:44,310 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 4 predicate places. [2022-11-18 20:08:44,310 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 637 transitions, 1633 flow [2022-11-18 20:08:44,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 587.6666666666666) internal successors, (7052), 12 states have internal predecessors, (7052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:44,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:44,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:44,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:08:44,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:44,525 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:08:44,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:44,526 INFO L85 PathProgramCache]: Analyzing trace with hash -946200399, now seen corresponding path program 1 times [2022-11-18 20:08:44,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:44,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355378188] [2022-11-18 20:08:44,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:44,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:44,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:44,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:44,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355378188] [2022-11-18 20:08:44,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355378188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:44,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071856890] [2022-11-18 20:08:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:44,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:44,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:44,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:44,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:08:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:44,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:08:44,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:44,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:44,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071856890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:44,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:08:44,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:08:44,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577592962] [2022-11-18 20:08:44,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:44,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:08:44,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:44,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:08:44,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:08:44,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-18 20:08:44,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 637 transitions, 1633 flow. Second operand has 6 states, 6 states have (on average 587.3333333333334) internal successors, (3524), 6 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:44,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:44,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-18 20:08:44,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:45,688 INFO L130 PetriNetUnfolder]: 85/2281 cut-off events. [2022-11-18 20:08:45,688 INFO L131 PetriNetUnfolder]: For 194/204 co-relation queries the response was YES. [2022-11-18 20:08:45,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2626 conditions, 2281 events. 85/2281 cut-off events. For 194/204 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 12805 event pairs, 0 based on Foata normal form. 12/2020 useless extension candidates. Maximal degree in co-relation 2313. Up to 68 conditions per place. [2022-11-18 20:08:45,717 INFO L137 encePairwiseOnDemand]: 640/657 looper letters, 58 selfloop transitions, 42 changer transitions 0/644 dead transitions. [2022-11-18 20:08:45,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 644 transitions, 1802 flow [2022-11-18 20:08:45,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:08:45,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:08:45,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4165 transitions. [2022-11-18 20:08:45,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9056316590563166 [2022-11-18 20:08:45,725 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4165 transitions. [2022-11-18 20:08:45,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4165 transitions. [2022-11-18 20:08:45,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:45,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4165 transitions. [2022-11-18 20:08:45,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:45,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:45,745 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:45,746 INFO L175 Difference]: Start difference. First operand has 601 places, 637 transitions, 1633 flow. Second operand 7 states and 4165 transitions. [2022-11-18 20:08:45,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 644 transitions, 1802 flow [2022-11-18 20:08:45,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 644 transitions, 1696 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-11-18 20:08:45,760 INFO L231 Difference]: Finished difference. Result has 595 places, 625 transitions, 1530 flow [2022-11-18 20:08:45,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1530, PETRI_PLACES=595, PETRI_TRANSITIONS=625} [2022-11-18 20:08:45,762 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -2 predicate places. [2022-11-18 20:08:45,762 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 625 transitions, 1530 flow [2022-11-18 20:08:45,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 587.3333333333334) internal successors, (3524), 6 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:45,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:45,764 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] [2022-11-18 20:08:45,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:45,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:08:45,970 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:08:45,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:45,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1389208576, now seen corresponding path program 1 times [2022-11-18 20:08:45,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:45,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655911932] [2022-11-18 20:08:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:45,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:08:46,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:46,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655911932] [2022-11-18 20:08:46,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655911932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:46,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:46,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:08:46,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035525844] [2022-11-18 20:08:46,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:46,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:08:46,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:46,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:08:46,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:08:46,135 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 657 [2022-11-18 20:08:46,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 625 transitions, 1530 flow. Second operand has 5 states, 5 states have (on average 523.4) internal successors, (2617), 5 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:46,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:46,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 657 [2022-11-18 20:08:46,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:47,725 INFO L130 PetriNetUnfolder]: 330/4937 cut-off events. [2022-11-18 20:08:47,726 INFO L131 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2022-11-18 20:08:47,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5621 conditions, 4937 events. 330/4937 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 41234 event pairs, 105 based on Foata normal form. 0/4213 useless extension candidates. Maximal degree in co-relation 5320. Up to 451 conditions per place. [2022-11-18 20:08:47,793 INFO L137 encePairwiseOnDemand]: 650/657 looper letters, 80 selfloop transitions, 5 changer transitions 0/623 dead transitions. [2022-11-18 20:08:47,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 623 transitions, 1696 flow [2022-11-18 20:08:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:08:47,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:08:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2677 transitions. [2022-11-18 20:08:47,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8149162861491629 [2022-11-18 20:08:47,799 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2677 transitions. [2022-11-18 20:08:47,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2677 transitions. [2022-11-18 20:08:47,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:47,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2677 transitions. [2022-11-18 20:08:47,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 535.4) internal successors, (2677), 5 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:47,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:47,813 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:47,813 INFO L175 Difference]: Start difference. First operand has 595 places, 625 transitions, 1530 flow. Second operand 5 states and 2677 transitions. [2022-11-18 20:08:47,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 623 transitions, 1696 flow [2022-11-18 20:08:47,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 623 transitions, 1644 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:08:47,826 INFO L231 Difference]: Finished difference. Result has 592 places, 623 transitions, 1484 flow [2022-11-18 20:08:47,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1484, PETRI_PLACES=592, PETRI_TRANSITIONS=623} [2022-11-18 20:08:47,828 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -5 predicate places. [2022-11-18 20:08:47,828 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 623 transitions, 1484 flow [2022-11-18 20:08:47,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 523.4) internal successors, (2617), 5 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:47,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:47,829 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] [2022-11-18 20:08:47,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:08:47,829 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:08:47,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:47,830 INFO L85 PathProgramCache]: Analyzing trace with hash -115791918, now seen corresponding path program 1 times [2022-11-18 20:08:47,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:47,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616554778] [2022-11-18 20:08:47,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:47,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:08:47,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:47,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616554778] [2022-11-18 20:08:47,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616554778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:47,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:47,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:47,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89349050] [2022-11-18 20:08:47,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:47,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:47,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:47,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:47,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:47,922 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 598 out of 657 [2022-11-18 20:08:47,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 623 transitions, 1484 flow. Second operand has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:47,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:47,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 598 of 657 [2022-11-18 20:08:47,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:49,527 INFO L130 PetriNetUnfolder]: 330/4928 cut-off events. [2022-11-18 20:08:49,528 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-18 20:08:49,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5423 conditions, 4928 events. 330/4928 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 41063 event pairs, 105 based on Foata normal form. 0/4213 useless extension candidates. Maximal degree in co-relation 5310. Up to 297 conditions per place. [2022-11-18 20:08:49,611 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 21 selfloop transitions, 3 changer transitions 0/621 dead transitions. [2022-11-18 20:08:49,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 621 transitions, 1528 flow [2022-11-18 20:08:49,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:08:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:08:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2418 transitions. [2022-11-18 20:08:49,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200913242009132 [2022-11-18 20:08:49,618 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2418 transitions. [2022-11-18 20:08:49,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2418 transitions. [2022-11-18 20:08:49,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:49,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2418 transitions. [2022-11-18 20:08:49,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:49,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:49,632 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:49,633 INFO L175 Difference]: Start difference. First operand has 592 places, 623 transitions, 1484 flow. Second operand 4 states and 2418 transitions. [2022-11-18 20:08:49,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 621 transitions, 1528 flow [2022-11-18 20:08:49,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 621 transitions, 1518 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:08:49,647 INFO L231 Difference]: Finished difference. Result has 589 places, 621 transitions, 1476 flow [2022-11-18 20:08:49,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1476, PETRI_PLACES=589, PETRI_TRANSITIONS=621} [2022-11-18 20:08:49,652 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -8 predicate places. [2022-11-18 20:08:49,653 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 621 transitions, 1476 flow [2022-11-18 20:08:49,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:49,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:49,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:49,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:08:49,655 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:08:49,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:49,655 INFO L85 PathProgramCache]: Analyzing trace with hash -661261162, now seen corresponding path program 2 times [2022-11-18 20:08:49,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:49,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342852847] [2022-11-18 20:08:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:49,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:50,073 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:50,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:50,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342852847] [2022-11-18 20:08:50,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342852847] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:50,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115503111] [2022-11-18 20:08:50,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:08:50,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:50,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:50,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:50,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:08:50,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:08:50,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:08:50,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:08:50,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:08:50,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:50,552 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:08:50,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115503111] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:50,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:08:50,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 16 [2022-11-18 20:08:50,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191824727] [2022-11-18 20:08:50,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:50,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:08:50,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:08:50,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:08:50,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 657 [2022-11-18 20:08:50,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 621 transitions, 1476 flow. Second operand has 17 states, 17 states have (on average 554.8235294117648) internal successors, (9432), 17 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:50,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:50,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 657 [2022-11-18 20:08:50,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:54,152 INFO L130 PetriNetUnfolder]: 672/8558 cut-off events. [2022-11-18 20:08:54,152 INFO L131 PetriNetUnfolder]: For 233/233 co-relation queries the response was YES. [2022-11-18 20:08:54,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9771 conditions, 8558 events. 672/8558 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 84983 event pairs, 273 based on Foata normal form. 6/7290 useless extension candidates. Maximal degree in co-relation 9711. Up to 126 conditions per place. [2022-11-18 20:08:54,245 INFO L137 encePairwiseOnDemand]: 629/657 looper letters, 213 selfloop transitions, 95 changer transitions 0/818 dead transitions. [2022-11-18 20:08:54,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 818 transitions, 2618 flow [2022-11-18 20:08:54,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:08:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-18 20:08:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 26762 transitions. [2022-11-18 20:08:54,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8486174530695079 [2022-11-18 20:08:54,287 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 26762 transitions. [2022-11-18 20:08:54,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 26762 transitions. [2022-11-18 20:08:54,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:54,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 26762 transitions. [2022-11-18 20:08:54,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 557.5416666666666) internal successors, (26762), 48 states have internal predecessors, (26762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:54,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 657.0) internal successors, (32193), 49 states have internal predecessors, (32193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:54,384 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 657.0) internal successors, (32193), 49 states have internal predecessors, (32193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:54,385 INFO L175 Difference]: Start difference. First operand has 589 places, 621 transitions, 1476 flow. Second operand 48 states and 26762 transitions. [2022-11-18 20:08:54,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 818 transitions, 2618 flow [2022-11-18 20:08:54,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 818 transitions, 2612 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:08:54,399 INFO L231 Difference]: Finished difference. Result has 636 places, 660 transitions, 1860 flow [2022-11-18 20:08:54,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1860, PETRI_PLACES=636, PETRI_TRANSITIONS=660} [2022-11-18 20:08:54,400 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 39 predicate places. [2022-11-18 20:08:54,401 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 660 transitions, 1860 flow [2022-11-18 20:08:54,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 554.8235294117648) internal successors, (9432), 17 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:54,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:54,404 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:54,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:54,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:54,611 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:08:54,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:54,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1424121864, now seen corresponding path program 1 times [2022-11-18 20:08:54,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:54,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411699979] [2022-11-18 20:08:54,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:54,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:08:54,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:54,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411699979] [2022-11-18 20:08:54,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411699979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:54,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:54,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:08:54,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241410155] [2022-11-18 20:08:54,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:54,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:08:54,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:54,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:08:54,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:08:54,933 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 657 [2022-11-18 20:08:54,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 660 transitions, 1860 flow. Second operand has 8 states, 8 states have (on average 495.5) internal successors, (3964), 8 states have internal predecessors, (3964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:54,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:54,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 657 [2022-11-18 20:08:54,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:56,946 INFO L130 PetriNetUnfolder]: 461/6822 cut-off events. [2022-11-18 20:08:56,947 INFO L131 PetriNetUnfolder]: For 503/503 co-relation queries the response was YES. [2022-11-18 20:08:56,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7952 conditions, 6822 events. 461/6822 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 61752 event pairs, 147 based on Foata normal form. 1/5838 useless extension candidates. Maximal degree in co-relation 7552. Up to 682 conditions per place. [2022-11-18 20:08:57,027 INFO L137 encePairwiseOnDemand]: 645/657 looper letters, 154 selfloop transitions, 21 changer transitions 0/660 dead transitions. [2022-11-18 20:08:57,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 660 transitions, 2202 flow [2022-11-18 20:08:57,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:08:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:08:57,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4518 transitions. [2022-11-18 20:08:57,036 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7640791476407914 [2022-11-18 20:08:57,036 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4518 transitions. [2022-11-18 20:08:57,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4518 transitions. [2022-11-18 20:08:57,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:57,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4518 transitions. [2022-11-18 20:08:57,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 502.0) internal successors, (4518), 9 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:57,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:57,058 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:57,059 INFO L175 Difference]: Start difference. First operand has 636 places, 660 transitions, 1860 flow. Second operand 9 states and 4518 transitions. [2022-11-18 20:08:57,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 660 transitions, 2202 flow [2022-11-18 20:08:57,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 660 transitions, 2079 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-18 20:08:57,076 INFO L231 Difference]: Finished difference. Result has 629 places, 658 transitions, 1767 flow [2022-11-18 20:08:57,077 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1767, PETRI_PLACES=629, PETRI_TRANSITIONS=658} [2022-11-18 20:08:57,078 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 32 predicate places. [2022-11-18 20:08:57,078 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 658 transitions, 1767 flow [2022-11-18 20:08:57,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 495.5) internal successors, (3964), 8 states have internal predecessors, (3964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:57,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:57,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:57,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:08:57,080 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:08:57,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:57,081 INFO L85 PathProgramCache]: Analyzing trace with hash -171416725, now seen corresponding path program 1 times [2022-11-18 20:08:57,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:57,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346555404] [2022-11-18 20:08:57,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:57,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:08:57,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:57,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346555404] [2022-11-18 20:08:57,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346555404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:57,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:57,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:08:57,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378466024] [2022-11-18 20:08:57,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:57,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:08:57,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:57,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:08:57,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:08:57,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 657 [2022-11-18 20:08:57,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 658 transitions, 1767 flow. Second operand has 5 states, 5 states have (on average 525.0) internal successors, (2625), 5 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:57,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:57,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 657 [2022-11-18 20:08:57,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:59,644 INFO L130 PetriNetUnfolder]: 671/8321 cut-off events. [2022-11-18 20:08:59,645 INFO L131 PetriNetUnfolder]: For 322/357 co-relation queries the response was YES. [2022-11-18 20:08:59,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9471 conditions, 8321 events. 671/8321 cut-off events. For 322/357 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 82555 event pairs, 273 based on Foata normal form. 0/7076 useless extension candidates. Maximal degree in co-relation 9134. Up to 814 conditions per place. [2022-11-18 20:08:59,757 INFO L137 encePairwiseOnDemand]: 650/657 looper letters, 80 selfloop transitions, 5 changer transitions 0/656 dead transitions. [2022-11-18 20:08:59,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 656 transitions, 1933 flow [2022-11-18 20:08:59,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:08:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:08:59,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2677 transitions. [2022-11-18 20:08:59,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8149162861491629 [2022-11-18 20:08:59,761 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2677 transitions. [2022-11-18 20:08:59,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2677 transitions. [2022-11-18 20:08:59,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:59,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2677 transitions. [2022-11-18 20:08:59,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 535.4) internal successors, (2677), 5 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:59,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:59,772 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:59,772 INFO L175 Difference]: Start difference. First operand has 629 places, 658 transitions, 1767 flow. Second operand 5 states and 2677 transitions. [2022-11-18 20:08:59,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 656 transitions, 1933 flow [2022-11-18 20:08:59,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 656 transitions, 1893 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 20:08:59,785 INFO L231 Difference]: Finished difference. Result has 624 places, 656 transitions, 1733 flow [2022-11-18 20:08:59,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=620, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1733, PETRI_PLACES=624, PETRI_TRANSITIONS=656} [2022-11-18 20:08:59,787 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 27 predicate places. [2022-11-18 20:08:59,787 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 656 transitions, 1733 flow [2022-11-18 20:08:59,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 525.0) internal successors, (2625), 5 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:59,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:59,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:59,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:08:59,789 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:08:59,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:59,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1018950175, now seen corresponding path program 1 times [2022-11-18 20:08:59,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:59,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795864064] [2022-11-18 20:08:59,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:59,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:08:59,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:59,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795864064] [2022-11-18 20:08:59,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795864064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:59,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:59,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:08:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568017566] [2022-11-18 20:08:59,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:59,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:08:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:59,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:08:59,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:08:59,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 598 out of 657 [2022-11-18 20:08:59,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 656 transitions, 1733 flow. Second operand has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:59,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:59,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 598 of 657 [2022-11-18 20:08:59,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:02,581 INFO L130 PetriNetUnfolder]: 671/8308 cut-off events. [2022-11-18 20:09:02,581 INFO L131 PetriNetUnfolder]: For 289/324 co-relation queries the response was YES. [2022-11-18 20:09:02,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9222 conditions, 8308 events. 671/8308 cut-off events. For 289/324 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 82443 event pairs, 273 based on Foata normal form. 0/7076 useless extension candidates. Maximal degree in co-relation 9103. Up to 604 conditions per place. [2022-11-18 20:09:02,696 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 21 selfloop transitions, 3 changer transitions 0/654 dead transitions. [2022-11-18 20:09:02,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 654 transitions, 1777 flow [2022-11-18 20:09:02,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:09:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:09:02,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2418 transitions. [2022-11-18 20:09:02,992 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200913242009132 [2022-11-18 20:09:02,992 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2418 transitions. [2022-11-18 20:09:02,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2418 transitions. [2022-11-18 20:09:03,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:03,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2418 transitions. [2022-11-18 20:09:03,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:03,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:03,024 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:03,024 INFO L175 Difference]: Start difference. First operand has 624 places, 656 transitions, 1733 flow. Second operand 4 states and 2418 transitions. [2022-11-18 20:09:03,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 654 transitions, 1777 flow [2022-11-18 20:09:03,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 654 transitions, 1767 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:09:03,047 INFO L231 Difference]: Finished difference. Result has 621 places, 654 transitions, 1725 flow [2022-11-18 20:09:03,048 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1725, PETRI_PLACES=621, PETRI_TRANSITIONS=654} [2022-11-18 20:09:03,049 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 24 predicate places. [2022-11-18 20:09:03,050 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 654 transitions, 1725 flow [2022-11-18 20:09:03,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:03,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:03,051 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:03,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:09:03,052 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:09:03,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:03,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1389492238, now seen corresponding path program 1 times [2022-11-18 20:09:03,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:03,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560268020] [2022-11-18 20:09:03,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:03,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:09:03,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:03,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560268020] [2022-11-18 20:09:03,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560268020] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:03,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767738659] [2022-11-18 20:09:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:03,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:03,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:03,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:03,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:09:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:03,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:09:03,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:09:03,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:09:04,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767738659] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:09:04,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:09:04,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 20:09:04,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770003219] [2022-11-18 20:09:04,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:04,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:09:04,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:04,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:09:04,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:09:04,303 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-18 20:09:04,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 654 transitions, 1725 flow. Second operand has 32 states, 32 states have (on average 588.5) internal successors, (18832), 32 states have internal predecessors, (18832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:04,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:04,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-18 20:09:04,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:07,789 INFO L130 PetriNetUnfolder]: 254/6440 cut-off events. [2022-11-18 20:09:07,789 INFO L131 PetriNetUnfolder]: For 730/760 co-relation queries the response was YES. [2022-11-18 20:09:07,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7476 conditions, 6440 events. 254/6440 cut-off events. For 730/760 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 50678 event pairs, 0 based on Foata normal form. 16/5781 useless extension candidates. Maximal degree in co-relation 7404. Up to 84 conditions per place. [2022-11-18 20:09:07,833 INFO L137 encePairwiseOnDemand]: 638/657 looper letters, 306 selfloop transitions, 158 changer transitions 0/1005 dead transitions. [2022-11-18 20:09:07,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 1005 transitions, 4035 flow [2022-11-18 20:09:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:09:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 20:09:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 26220 transitions. [2022-11-18 20:09:07,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070153590701536 [2022-11-18 20:09:07,860 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 26220 transitions. [2022-11-18 20:09:07,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 26220 transitions. [2022-11-18 20:09:07,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:07,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 26220 transitions. [2022-11-18 20:09:07,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 595.9090909090909) internal successors, (26220), 44 states have internal predecessors, (26220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:07,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 657.0) internal successors, (29565), 45 states have internal predecessors, (29565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:07,935 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 657.0) internal successors, (29565), 45 states have internal predecessors, (29565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:07,936 INFO L175 Difference]: Start difference. First operand has 621 places, 654 transitions, 1725 flow. Second operand 44 states and 26220 transitions. [2022-11-18 20:09:07,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 1005 transitions, 4035 flow [2022-11-18 20:09:07,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 1005 transitions, 4029 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:09:07,957 INFO L231 Difference]: Finished difference. Result has 670 places, 747 transitions, 2723 flow [2022-11-18 20:09:07,958 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2723, PETRI_PLACES=670, PETRI_TRANSITIONS=747} [2022-11-18 20:09:07,960 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 73 predicate places. [2022-11-18 20:09:07,960 INFO L495 AbstractCegarLoop]: Abstraction has has 670 places, 747 transitions, 2723 flow [2022-11-18 20:09:07,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 588.5) internal successors, (18832), 32 states have internal predecessors, (18832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:07,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:07,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:07,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:08,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:09:08,170 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:09:08,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:08,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1330110677, now seen corresponding path program 1 times [2022-11-18 20:09:08,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:08,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454925980] [2022-11-18 20:09:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:08,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:09:08,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:08,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454925980] [2022-11-18 20:09:08,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454925980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:08,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:08,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:09:08,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424867625] [2022-11-18 20:09:08,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:08,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:09:08,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:08,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:09:08,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:09:08,336 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-18 20:09:08,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 747 transitions, 2723 flow. Second operand has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:08,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:08,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-18 20:09:08,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:09:11,704 INFO L130 PetriNetUnfolder]: 464/10955 cut-off events. [2022-11-18 20:09:11,704 INFO L131 PetriNetUnfolder]: For 941/1001 co-relation queries the response was YES. [2022-11-18 20:09:11,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12910 conditions, 10955 events. 464/10955 cut-off events. For 941/1001 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 105622 event pairs, 0 based on Foata normal form. 0/9695 useless extension candidates. Maximal degree in co-relation 12242. Up to 646 conditions per place. [2022-11-18 20:09:11,803 INFO L137 encePairwiseOnDemand]: 637/657 looper letters, 58 selfloop transitions, 14 changer transitions 0/778 dead transitions. [2022-11-18 20:09:11,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 778 transitions, 2935 flow [2022-11-18 20:09:11,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:09:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:09:11,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3003 transitions. [2022-11-18 20:09:11,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9141552511415525 [2022-11-18 20:09:11,807 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3003 transitions. [2022-11-18 20:09:11,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3003 transitions. [2022-11-18 20:09:11,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:09:11,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3003 transitions. [2022-11-18 20:09:11,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:11,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:11,816 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:11,816 INFO L175 Difference]: Start difference. First operand has 670 places, 747 transitions, 2723 flow. Second operand 5 states and 3003 transitions. [2022-11-18 20:09:11,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 778 transitions, 2935 flow [2022-11-18 20:09:11,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 659 places, 778 transitions, 2835 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-18 20:09:11,841 INFO L231 Difference]: Finished difference. Result has 662 places, 758 transitions, 2727 flow [2022-11-18 20:09:11,842 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=733, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2727, PETRI_PLACES=662, PETRI_TRANSITIONS=758} [2022-11-18 20:09:11,843 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 65 predicate places. [2022-11-18 20:09:11,843 INFO L495 AbstractCegarLoop]: Abstraction has has 662 places, 758 transitions, 2727 flow [2022-11-18 20:09:11,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:11,844 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:09:11,844 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:11,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:09:11,844 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:09:11,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2077222249, now seen corresponding path program 1 times [2022-11-18 20:09:11,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:11,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767795146] [2022-11-18 20:09:11,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:11,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:09:12,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:12,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767795146] [2022-11-18 20:09:12,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767795146] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:12,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677423600] [2022-11-18 20:09:12,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:12,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:12,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:12,020 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:12,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_354b4d80-0975-403a-baa6-ced9e3ac2707/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:09:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:12,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:09:12,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:12,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:09:12,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:09:13,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677423600] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:09:13,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:09:13,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 25 [2022-11-18 20:09:13,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077149856] [2022-11-18 20:09:13,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:13,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:09:13,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:13,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:09:13,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:09:13,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 504 out of 657 [2022-11-18 20:09:13,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 758 transitions, 2727 flow. Second operand has 25 states, 25 states have (on average 509.76) internal successors, (12744), 25 states have internal predecessors, (12744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:13,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:09:13,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 504 of 657 [2022-11-18 20:09:13,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand