./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c5f43b3e9ff1d4598a5a525fe9e716f863331c4c517b4b8adb0491943243286 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:52:06,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:52:06,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:52:06,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:52:06,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:52:06,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:52:06,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:52:06,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:52:06,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:52:06,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:52:06,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:52:06,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:52:06,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:52:06,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:52:06,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:52:06,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:52:06,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:52:06,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:52:06,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:52:06,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:52:06,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:52:06,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:52:06,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:52:06,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:52:06,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:52:06,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:52:06,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:52:06,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:52:06,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:52:06,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:52:06,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:52:06,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:52:06,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:52:06,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:52:06,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:52:06,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:52:06,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:52:06,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:52:06,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:52:06,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:52:06,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:52:06,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:52:06,355 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:52:06,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:52:06,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:52:06,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:52:06,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:52:06,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:52:06,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:52:06,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:52:06,359 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:52:06,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:52:06,360 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:52:06,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:52:06,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:52:06,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:52:06,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:52:06,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:52:06,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:52:06,362 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:52:06,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:52:06,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:52:06,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:52:06,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:52:06,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:52:06,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:52:06,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:52:06,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:52:06,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:52:06,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:52:06,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:52:06,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:52:06,365 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:52:06,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:52:06,366 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:52:06,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:52:06,366 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c5f43b3e9ff1d4598a5a525fe9e716f863331c4c517b4b8adb0491943243286 [2022-11-25 17:52:06,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:52:06,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:52:06,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:52:06,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:52:06,689 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:52:06,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c [2022-11-25 17:52:11,889 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:52:12,064 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:52:12,065 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c [2022-11-25 17:52:12,071 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/data/b392e1542/eb6fa67908ad48a08ab2844eadb52a7b/FLAGd16121c4a [2022-11-25 17:52:12,086 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/data/b392e1542/eb6fa67908ad48a08ab2844eadb52a7b [2022-11-25 17:52:12,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:52:12,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:52:12,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:52:12,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:52:12,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:52:12,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:12" (1/1) ... [2022-11-25 17:52:12,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aaa277c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:12, skipping insertion in model container [2022-11-25 17:52:12,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:12" (1/1) ... [2022-11-25 17:52:12,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:52:12,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:52:12,271 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c[319,332] [2022-11-25 17:52:12,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:52:12,293 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:52:12,303 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c[319,332] [2022-11-25 17:52:12,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:52:12,318 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:52:12,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:12 WrapperNode [2022-11-25 17:52:12,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:52:12,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:52:12,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:52:12,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:52:12,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:12" (1/1) ... [2022-11-25 17:52:12,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:12" (1/1) ... [2022-11-25 17:52:12,345 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-11-25 17:52:12,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:52:12,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:52:12,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:52:12,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:52:12,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:12" (1/1) ... [2022-11-25 17:52:12,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:12" (1/1) ... [2022-11-25 17:52:12,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:12" (1/1) ... [2022-11-25 17:52:12,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:12" (1/1) ... [2022-11-25 17:52:12,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:12" (1/1) ... [2022-11-25 17:52:12,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:12" (1/1) ... [2022-11-25 17:52:12,361 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:12" (1/1) ... [2022-11-25 17:52:12,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:12" (1/1) ... [2022-11-25 17:52:12,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:52:12,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:52:12,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:52:12,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:52:12,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:12" (1/1) ... [2022-11-25 17:52:12,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:52:12,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:12,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:12,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:52:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:52:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:52:12,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:52:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:52:12,504 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:52:12,507 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:52:12,621 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:52:12,627 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:52:12,627 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:52:12,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:12 BoogieIcfgContainer [2022-11-25 17:52:12,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:52:12,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:52:12,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:52:12,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:52:12,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:52:12" (1/3) ... [2022-11-25 17:52:12,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f19850d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:52:12, skipping insertion in model container [2022-11-25 17:52:12,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:12" (2/3) ... [2022-11-25 17:52:12,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f19850d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:52:12, skipping insertion in model container [2022-11-25 17:52:12,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:12" (3/3) ... [2022-11-25 17:52:12,640 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_10.c [2022-11-25 17:52:12,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:52:12,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:52:12,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:52:12,724 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;@729a6469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:52:12,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:52:12,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:12,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 17:52:12,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:12,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:52:12,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:12,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2022-11-25 17:52:12,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:12,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410750702] [2022-11-25 17:52:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:12,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:12,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:12,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:12,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410750702] [2022-11-25 17:52:12,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410750702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:52:12,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:52:12,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:52:12,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523747460] [2022-11-25 17:52:12,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:52:12,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:52:12,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:12,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:52:12,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:52:12,950 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:12,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:12,978 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-11-25 17:52:12,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:52:12,981 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 17:52:12,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:52:12,989 INFO L225 Difference]: With dead ends: 21 [2022-11-25 17:52:12,990 INFO L226 Difference]: Without dead ends: 9 [2022-11-25 17:52:12,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:52:12,998 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:52:13,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:52:13,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-25 17:52:13,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-25 17:52:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:13,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-11-25 17:52:13,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-11-25 17:52:13,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:52:13,036 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-25 17:52:13,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:13,037 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-11-25 17:52:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 17:52:13,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:13,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:52:13,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:52:13,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2022-11-25 17:52:13,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:13,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610635749] [2022-11-25 17:52:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:13,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:13,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:13,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610635749] [2022-11-25 17:52:13,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610635749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:52:13,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:52:13,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:52:13,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037450928] [2022-11-25 17:52:13,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:52:13,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:52:13,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:13,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:52:13,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:52:13,306 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:13,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:13,332 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2022-11-25 17:52:13,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:52:13,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 17:52:13,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:52:13,334 INFO L225 Difference]: With dead ends: 19 [2022-11-25 17:52:13,334 INFO L226 Difference]: Without dead ends: 12 [2022-11-25 17:52:13,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:52:13,336 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:52:13,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:52:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-25 17:52:13,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-11-25 17:52:13,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:13,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-25 17:52:13,340 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2022-11-25 17:52:13,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:52:13,341 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-25 17:52:13,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:13,341 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-25 17:52:13,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 17:52:13,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:13,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:13,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:52:13,342 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:13,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:13,343 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2022-11-25 17:52:13,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:13,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541201027] [2022-11-25 17:52:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:13,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:13,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:13,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541201027] [2022-11-25 17:52:13,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541201027] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:52:13,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566298280] [2022-11-25 17:52:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:13,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:13,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:13,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:13,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:52:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:13,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:52:13,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:13,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:52:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:14,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566298280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:52:14,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:52:14,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 9 [2022-11-25 17:52:14,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512269335] [2022-11-25 17:52:14,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:52:14,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:52:14,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:14,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:52:14,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:52:14,068 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:14,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:14,179 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2022-11-25 17:52:14,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:52:14,180 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 17:52:14,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:52:14,181 INFO L225 Difference]: With dead ends: 26 [2022-11-25 17:52:14,182 INFO L226 Difference]: Without dead ends: 19 [2022-11-25 17:52:14,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:52:14,186 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:52:14,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 12 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:52:14,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-25 17:52:14,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-25 17:52:14,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:14,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-25 17:52:14,195 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-11-25 17:52:14,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:52:14,195 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-25 17:52:14,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:14,195 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-25 17:52:14,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-25 17:52:14,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:14,196 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:14,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 17:52:14,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:14,402 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:14,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:14,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2022-11-25 17:52:14,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:14,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017063439] [2022-11-25 17:52:14,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:14,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:14,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:14,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017063439] [2022-11-25 17:52:14,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017063439] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:52:14,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817554935] [2022-11-25 17:52:14,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:52:14,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:14,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:14,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:14,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:52:14,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:52:14,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:52:14,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 17:52:14,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:15,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:52:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:15,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817554935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:52:15,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:52:15,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 20 [2022-11-25 17:52:15,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257799755] [2022-11-25 17:52:15,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:52:15,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 17:52:15,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:15,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 17:52:15,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2022-11-25 17:52:15,538 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:18,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:18,660 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-11-25 17:52:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 17:52:18,660 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-25 17:52:18,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:52:18,662 INFO L225 Difference]: With dead ends: 57 [2022-11-25 17:52:18,662 INFO L226 Difference]: Without dead ends: 38 [2022-11-25 17:52:18,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 17:52:18,664 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 39 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:52:18,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 25 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 17:52:18,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-25 17:52:18,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-11-25 17:52:18,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:18,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-11-25 17:52:18,676 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 18 [2022-11-25 17:52:18,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:52:18,676 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-11-25 17:52:18,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-11-25 17:52:18,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 17:52:18,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:18,678 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:18,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:18,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:18,896 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:18,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:18,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1843997196, now seen corresponding path program 1 times [2022-11-25 17:52:18,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:18,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102668580] [2022-11-25 17:52:18,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:18,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:19,065 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:19,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:19,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102668580] [2022-11-25 17:52:19,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102668580] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:52:19,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518402524] [2022-11-25 17:52:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:19,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:19,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:19,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:19,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:52:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:19,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 17:52:19,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:19,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:52:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:19,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518402524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:52:19,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:52:19,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-25 17:52:19,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369378344] [2022-11-25 17:52:19,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:52:19,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 17:52:19,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:19,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 17:52:19,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-25 17:52:19,398 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:20,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:20,211 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2022-11-25 17:52:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:52:20,213 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-25 17:52:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:52:20,214 INFO L225 Difference]: With dead ends: 60 [2022-11-25 17:52:20,214 INFO L226 Difference]: Without dead ends: 53 [2022-11-25 17:52:20,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=230, Unknown=0, NotChecked=0, Total=380 [2022-11-25 17:52:20,216 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:52:20,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 23 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:52:20,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-25 17:52:20,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2022-11-25 17:52:20,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2022-11-25 17:52:20,235 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 24 [2022-11-25 17:52:20,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:52:20,235 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2022-11-25 17:52:20,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:20,236 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2022-11-25 17:52:20,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-25 17:52:20,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:20,239 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:20,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:20,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:20,445 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:20,445 INFO L85 PathProgramCache]: Analyzing trace with hash -51731342, now seen corresponding path program 3 times [2022-11-25 17:52:20,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:20,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376428712] [2022-11-25 17:52:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:20,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:20,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:20,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376428712] [2022-11-25 17:52:20,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376428712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:52:20,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008138200] [2022-11-25 17:52:20,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:52:20,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:20,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:20,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:20,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:52:21,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 17:52:21,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:52:21,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:52:21,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-25 17:52:21,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:52:21,505 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-25 17:52:21,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008138200] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:52:21,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:52:21,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 21 [2022-11-25 17:52:21,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006659436] [2022-11-25 17:52:21,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:52:21,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 17:52:21,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:21,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 17:52:21,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-11-25 17:52:21,508 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:22,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:22,313 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2022-11-25 17:52:22,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 17:52:22,313 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-25 17:52:22,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:52:22,314 INFO L225 Difference]: With dead ends: 57 [2022-11-25 17:52:22,314 INFO L226 Difference]: Without dead ends: 53 [2022-11-25 17:52:22,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 17:52:22,316 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 59 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:52:22,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 17 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:52:22,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-25 17:52:22,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2022-11-25 17:52:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2022-11-25 17:52:22,327 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 36 [2022-11-25 17:52:22,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:52:22,327 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2022-11-25 17:52:22,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:22,328 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2022-11-25 17:52:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 17:52:22,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:22,329 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 3, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:22,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:22,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 17:52:22,540 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:22,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:22,541 INFO L85 PathProgramCache]: Analyzing trace with hash -749374373, now seen corresponding path program 2 times [2022-11-25 17:52:22,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:22,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251654530] [2022-11-25 17:52:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:22,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 101 proven. 222 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 17:52:22,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:22,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251654530] [2022-11-25 17:52:22,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251654530] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:52:22,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763908466] [2022-11-25 17:52:22,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:52:22,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:22,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:22,946 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:22,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:52:23,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:52:23,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:52:23,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-25 17:52:23,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 29 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:23,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:52:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 29 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:23,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763908466] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:52:23,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:52:23,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 33 [2022-11-25 17:52:23,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832620802] [2022-11-25 17:52:23,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:52:23,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-25 17:52:23,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:23,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-25 17:52:23,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=740, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 17:52:23,879 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:46,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:46,411 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2022-11-25 17:52:46,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-25 17:52:46,412 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-25 17:52:46,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:52:46,413 INFO L225 Difference]: With dead ends: 121 [2022-11-25 17:52:46,413 INFO L226 Difference]: Without dead ends: 106 [2022-11-25 17:52:46,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=778, Invalid=1384, Unknown=0, NotChecked=0, Total=2162 [2022-11-25 17:52:46,415 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 49 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:52:46,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 61 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:52:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-25 17:52:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-25 17:52:46,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 105 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:46,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2022-11-25 17:52:46,446 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 51 [2022-11-25 17:52:46,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:52:46,446 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2022-11-25 17:52:46,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:46,447 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2022-11-25 17:52:46,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-25 17:52:46,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:46,449 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 30, 3, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:46,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:46,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:46,651 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:46,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:46,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1404636997, now seen corresponding path program 3 times [2022-11-25 17:52:46,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:46,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937508568] [2022-11-25 17:52:46,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:46,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 245 proven. 1365 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 17:52:48,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:48,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937508568] [2022-11-25 17:52:48,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937508568] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:52:48,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017630992] [2022-11-25 17:52:48,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:52:48,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:48,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:48,222 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:48,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:52:48,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-25 17:52:48,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:52:48,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 17:52:48,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 326 proven. 15 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2022-11-25 17:52:49,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:52:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 341 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2022-11-25 17:52:50,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017630992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:52:50,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:52:50,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9, 11] total 49 [2022-11-25 17:52:50,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186726385] [2022-11-25 17:52:50,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:52:50,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-25 17:52:50,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:50,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-25 17:52:50,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=2006, Unknown=0, NotChecked=0, Total=2352 [2022-11-25 17:52:50,656 INFO L87 Difference]: Start difference. First operand 106 states and 109 transitions. Second operand has 49 states, 49 states have (on average 2.7142857142857144) internal successors, (133), 49 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:57,080 INFO L93 Difference]: Finished difference Result 146 states and 166 transitions. [2022-11-25 17:52:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-25 17:52:57,081 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7142857142857144) internal successors, (133), 49 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-11-25 17:52:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:52:57,083 INFO L225 Difference]: With dead ends: 146 [2022-11-25 17:52:57,083 INFO L226 Difference]: Without dead ends: 131 [2022-11-25 17:52:57,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1203, Invalid=6279, Unknown=0, NotChecked=0, Total=7482 [2022-11-25 17:52:57,090 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 105 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 3356 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 3406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 3356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:52:57,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 53 Invalid, 3406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 3356 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 17:52:57,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-25 17:52:57,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2022-11-25 17:52:57,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.054263565891473) internal successors, (136), 129 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 136 transitions. [2022-11-25 17:52:57,107 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 136 transitions. Word has length 105 [2022-11-25 17:52:57,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:52:57,108 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 136 transitions. [2022-11-25 17:52:57,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7142857142857144) internal successors, (133), 49 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 136 transitions. [2022-11-25 17:52:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-25 17:52:57,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:57,111 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 32, 9, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:57,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:57,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:57,317 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:57,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:57,317 INFO L85 PathProgramCache]: Analyzing trace with hash 674089979, now seen corresponding path program 4 times [2022-11-25 17:52:57,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:57,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428122592] [2022-11-25 17:52:57,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:57,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 849 proven. 1552 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-25 17:52:59,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:59,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428122592] [2022-11-25 17:52:59,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428122592] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:52:59,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30869188] [2022-11-25 17:52:59,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:52:59,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:59,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:59,192 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:59,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29277d9c-4e0a-4753-8bf6-35bb15e3477d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:52:59,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:52:59,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:52:59,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-25 17:52:59,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 774 proven. 1650 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-25 17:52:59,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:53:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 774 proven. 1650 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-25 17:53:03,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30869188] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:53:03,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:53:03,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 36, 37] total 72 [2022-11-25 17:53:03,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104023266] [2022-11-25 17:53:03,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:53:03,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-25 17:53:03,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:53:03,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-25 17:53:03,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1400, Invalid=3712, Unknown=0, NotChecked=0, Total=5112 [2022-11-25 17:53:03,696 INFO L87 Difference]: Start difference. First operand 130 states and 136 transitions. Second operand has 72 states, 72 states have (on average 2.986111111111111) internal successors, (215), 72 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:06,792 WARN L233 SmtUtils]: Spent 14.44s on a formula simplification. DAG size of input: 239 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:55:12,853 WARN L233 SmtUtils]: Spent 12.84s on a formula simplification. DAG size of input: 232 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:56:11,323 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 225 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:57:10,888 WARN L233 SmtUtils]: Spent 10.94s on a formula simplification. DAG size of input: 218 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:58:16,395 WARN L233 SmtUtils]: Spent 11.56s on a formula simplification. DAG size of input: 211 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:59:22,519 WARN L233 SmtUtils]: Spent 12.00s on a formula simplification. DAG size of input: 204 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:00:37,396 WARN L233 SmtUtils]: Spent 14.85s on a formula simplification. DAG size of input: 197 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:00:39,436 WARN L837 $PredicateComparison]: unable to prove that (and (let ((.cse0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296))) (or (not (<= 5000000 .cse0)) (< 4294967294 .cse0))) (not (<= 5000000 (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296))) (let ((.cse1 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296))) (or (< 4294967294 .cse1) (not (<= 5000000 .cse1)))) (let ((.cse2 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296))) (or (< 4294967294 .cse2) (not (<= 5000000 .cse2)))) (let ((.cse3 (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (not (<= 5000000 .cse3)) (< 4294967294 .cse3))) (let ((.cse4 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296))) (or (not (<= 5000000 .cse4)) (< 4294967294 .cse4))) (let ((.cse5 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296))) (or (< 4294967294 .cse5) (not (<= 5000000 .cse5)))) (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296))) (or (< 4294967294 .cse6) (not (<= 5000000 .cse6)))) (let ((.cse7 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296))) (or (< 4294967294 .cse7) (not (<= 5000000 .cse7)))) (let ((.cse8 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296))) (or (not (<= 5000000 .cse8)) (< 4294967294 .cse8))) (let ((.cse9 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296))) (or (not (<= 5000000 .cse9)) (< 4294967294 .cse9))) (let ((.cse10 (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< 4294967294 .cse10) (not (<= 5000000 .cse10)))) (let ((.cse11 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296))) (or (< 4294967294 .cse11) (not (<= 5000000 .cse11)))) (let ((.cse12 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296))) (or (< 4294967294 .cse12) (not (<= 5000000 .cse12)))) (let ((.cse13 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296))) (or (< 4294967294 .cse13) (not (<= 5000000 .cse13)))) (let ((.cse14 (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (not (<= 5000000 .cse14)) (< 4294967294 .cse14))) (let ((.cse15 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296))) (or (not (<= 5000000 .cse15)) (< 4294967294 .cse15))) (let ((.cse16 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296))) (or (< 4294967294 .cse16) (not (<= 5000000 .cse16)))) (let ((.cse17 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296))) (or (not (<= 5000000 .cse17)) (< 4294967294 .cse17))) (let ((.cse18 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296))) (or (not (<= 5000000 .cse18)) (< 4294967294 .cse18))) (let ((.cse19 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 1) 4294967296))) (or (< 4294967294 .cse19) (not (<= 5000000 .cse19)))) (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296))) (or (not (<= 5000000 .cse20)) (< 4294967294 .cse20))) (let ((.cse21 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296))) (or (not (<= 5000000 .cse21)) (< 4294967294 .cse21))) (let ((.cse22 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296))) (or (< 4294967294 .cse22) (not (<= 5000000 .cse22)))) (let ((.cse23 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296))) (or (not (<= 5000000 .cse23)) (< 4294967294 .cse23))) (let ((.cse24 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296))) (or (not (<= 5000000 .cse24)) (< 4294967294 .cse24))) (let ((.cse25 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296))) (or (not (<= 5000000 .cse25)) (< 4294967294 .cse25)))) is different from false [2022-11-25 18:02:30,480 WARN L233 SmtUtils]: Spent 9.61s on a formula simplification. DAG size of input: 180 DAG size of output: 17 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:03:35,725 WARN L233 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 183 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:04:34,879 WARN L233 SmtUtils]: Spent 15.61s on a formula simplification. DAG size of input: 236 DAG size of output: 17 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:05:29,749 WARN L233 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 176 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:06:25,042 WARN L233 SmtUtils]: Spent 12.66s on a formula simplification. DAG size of input: 234 DAG size of output: 15 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)