./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/nested3-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested3-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro --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 0397e1839c0d761fe403b06501425acc9e7bddc9f103e53ae177509d148aabf4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:31:46,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:31:46,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:31:46,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:31:46,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:31:46,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:31:46,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:31:46,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:31:46,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:31:46,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:31:46,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:31:46,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:31:46,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:31:46,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:31:46,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:31:46,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:31:46,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:31:46,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:31:46,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:31:46,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:31:46,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:31:46,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:31:46,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:31:46,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:31:46,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:31:46,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:31:46,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:31:46,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:31:46,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:31:46,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:31:46,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:31:46,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:31:46,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:31:46,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:31:46,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:31:46,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:31:46,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:31:46,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:31:46,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:31:46,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:31:46,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:31:46,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:31:46,459 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:31:46,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:31:46,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:31:46,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:31:46,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:31:46,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:31:46,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:31:46,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:31:46,463 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:31:46,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:31:46,463 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:31:46,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:31:46,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:31:46,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:31:46,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:31:46,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:31:46,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:31:46,465 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:31:46,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:31:46,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:31:46,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:31:46,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:31:46,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:31:46,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:31:46,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:46,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:31:46,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:31:46,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:31:46,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:31:46,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:31:46,468 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:31:46,468 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:31:46,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:31:46,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0397e1839c0d761fe403b06501425acc9e7bddc9f103e53ae177509d148aabf4 [2022-11-18 19:31:46,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:31:46,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:31:46,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:31:46,790 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:31:46,791 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:31:46,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/loops-crafted-1/nested3-2.c [2022-11-18 19:31:46,903 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/data/b86c6f8eb/6ea0016344ab456c893805624e74c75c/FLAG5a9efb4a3 [2022-11-18 19:31:47,530 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:31:47,531 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/sv-benchmarks/c/loops-crafted-1/nested3-2.c [2022-11-18 19:31:47,539 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/data/b86c6f8eb/6ea0016344ab456c893805624e74c75c/FLAG5a9efb4a3 [2022-11-18 19:31:47,887 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/data/b86c6f8eb/6ea0016344ab456c893805624e74c75c [2022-11-18 19:31:47,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:31:47,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:31:47,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:47,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:31:47,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:31:47,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:47" (1/1) ... [2022-11-18 19:31:47,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fb01ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:47, skipping insertion in model container [2022-11-18 19:31:47,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:47" (1/1) ... [2022-11-18 19:31:47,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:31:47,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:31:48,159 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/sv-benchmarks/c/loops-crafted-1/nested3-2.c[321,334] [2022-11-18 19:31:48,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:48,194 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:31:48,212 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/sv-benchmarks/c/loops-crafted-1/nested3-2.c[321,334] [2022-11-18 19:31:48,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:48,245 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:31:48,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:48 WrapperNode [2022-11-18 19:31:48,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:48,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:48,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:31:48,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:31:48,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:48" (1/1) ... [2022-11-18 19:31:48,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:48" (1/1) ... [2022-11-18 19:31:48,295 INFO L138 Inliner]: procedures = 12, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-11-18 19:31:48,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:48,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:31:48,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:31:48,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:31:48,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:48" (1/1) ... [2022-11-18 19:31:48,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:48" (1/1) ... [2022-11-18 19:31:48,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:48" (1/1) ... [2022-11-18 19:31:48,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:48" (1/1) ... [2022-11-18 19:31:48,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:48" (1/1) ... [2022-11-18 19:31:48,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:48" (1/1) ... [2022-11-18 19:31:48,339 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:48" (1/1) ... [2022-11-18 19:31:48,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:48" (1/1) ... [2022-11-18 19:31:48,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:31:48,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:31:48,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:31:48,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:31:48,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:48" (1/1) ... [2022-11-18 19:31:48,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:48,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:48,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:48,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:31:48,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:31:48,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:31:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:31:48,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:31:48,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 19:31:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 19:31:48,495 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:31:48,497 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:31:48,647 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:31:48,654 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:31:48,654 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 19:31:48,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:48 BoogieIcfgContainer [2022-11-18 19:31:48,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:31:48,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:31:48,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:31:48,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:31:48,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:31:47" (1/3) ... [2022-11-18 19:31:48,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a58ad5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:48, skipping insertion in model container [2022-11-18 19:31:48,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:48" (2/3) ... [2022-11-18 19:31:48,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a58ad5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:48, skipping insertion in model container [2022-11-18 19:31:48,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:48" (3/3) ... [2022-11-18 19:31:48,669 INFO L112 eAbstractionObserver]: Analyzing ICFG nested3-2.c [2022-11-18 19:31:48,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:31:48,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:31:48,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:31:48,762 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;@63fe03e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:31:48,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:31:48,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:31:48,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:31:48,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:48,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:48,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:48,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:48,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1839857593, now seen corresponding path program 1 times [2022-11-18 19:31:48,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:48,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180479165] [2022-11-18 19:31:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:48,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:48,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:48,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180479165] [2022-11-18 19:31:48,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180479165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:48,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:48,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:31:48,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458763128] [2022-11-18 19:31:48,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:49,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:31:49,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:49,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:31:49,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:31:49,038 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:49,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:49,063 INFO L93 Difference]: Finished difference Result 38 states and 57 transitions. [2022-11-18 19:31:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:31:49,066 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 19:31:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:49,084 INFO L225 Difference]: With dead ends: 38 [2022-11-18 19:31:49,085 INFO L226 Difference]: Without dead ends: 16 [2022-11-18 19:31:49,089 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 [2022-11-18 19:31:49,097 INFO L413 NwaCegarLoop]: 24 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, 24 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 [2022-11-18 19:31:49,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:31:49,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-18 19:31:49,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-18 19:31:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:31:49,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-11-18 19:31:49,149 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 7 [2022-11-18 19:31:49,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:49,150 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-11-18 19:31:49,151 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:49,151 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-11-18 19:31:49,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:31:49,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:49,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:49,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:31:49,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:49,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1810304921, now seen corresponding path program 1 times [2022-11-18 19:31:49,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:49,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571620593] [2022-11-18 19:31:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:49,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:49,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:49,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571620593] [2022-11-18 19:31:49,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571620593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:49,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:49,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:49,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925458026] [2022-11-18 19:31:49,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:49,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:31:49,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:49,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:31:49,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:31:49,457 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:49,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:49,507 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2022-11-18 19:31:49,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:31:49,508 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 19:31:49,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:49,509 INFO L225 Difference]: With dead ends: 30 [2022-11-18 19:31:49,509 INFO L226 Difference]: Without dead ends: 23 [2022-11-18 19:31:49,510 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 [2022-11-18 19:31:49,511 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:49,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 36 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:31:49,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-18 19:31:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2022-11-18 19:31:49,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:31:49,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-18 19:31:49,520 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 7 [2022-11-18 19:31:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:49,521 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-18 19:31:49,521 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:49,521 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-18 19:31:49,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:31:49,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:49,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:49,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:31:49,539 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:49,540 INFO L85 PathProgramCache]: Analyzing trace with hash 300961951, now seen corresponding path program 1 times [2022-11-18 19:31:49,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:49,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461729275] [2022-11-18 19:31:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:49,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:49,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:49,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461729275] [2022-11-18 19:31:49,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461729275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:49,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:49,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:49,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156365429] [2022-11-18 19:31:49,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:49,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:31:49,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:49,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:31:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:31:49,699 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:49,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:49,726 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2022-11-18 19:31:49,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:31:49,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:31:49,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:49,728 INFO L225 Difference]: With dead ends: 35 [2022-11-18 19:31:49,729 INFO L226 Difference]: Without dead ends: 21 [2022-11-18 19:31:49,730 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 [2022-11-18 19:31:49,731 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:49,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 33 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:31:49,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-18 19:31:49,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2022-11-18 19:31:49,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:31:49,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-18 19:31:49,740 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 8 [2022-11-18 19:31:49,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:49,741 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-18 19:31:49,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:49,741 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-18 19:31:49,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:31:49,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:49,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:49,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:31:49,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:49,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:49,744 INFO L85 PathProgramCache]: Analyzing trace with hash 766069286, now seen corresponding path program 1 times [2022-11-18 19:31:49,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:49,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492885320] [2022-11-18 19:31:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:49,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:49,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:49,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492885320] [2022-11-18 19:31:49,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492885320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:49,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:49,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:31:49,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145494895] [2022-11-18 19:31:49,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:49,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:31:49,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:49,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:31:49,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:31:49,864 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:49,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:49,882 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2022-11-18 19:31:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:31:49,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 19:31:49,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:49,884 INFO L225 Difference]: With dead ends: 35 [2022-11-18 19:31:49,884 INFO L226 Difference]: Without dead ends: 20 [2022-11-18 19:31:49,885 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 [2022-11-18 19:31:49,887 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:49,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:31:49,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-18 19:31:49,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2022-11-18 19:31:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:31:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-18 19:31:49,894 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2022-11-18 19:31:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:49,895 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-18 19:31:49,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:49,895 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-18 19:31:49,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:31:49,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:49,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:49,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:31:49,897 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:49,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:49,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1993625471, now seen corresponding path program 1 times [2022-11-18 19:31:49,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:49,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179583848] [2022-11-18 19:31:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:49,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:50,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:50,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179583848] [2022-11-18 19:31:50,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179583848] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:50,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952992399] [2022-11-18 19:31:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:50,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:50,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:50,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:50,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:31:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:50,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:31:50,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:50,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:31:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:50,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952992399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:31:50,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:31:50,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-18 19:31:50,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52531812] [2022-11-18 19:31:50,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:31:50,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:31:50,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:50,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:31:50,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:31:50,345 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:50,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:50,398 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-11-18 19:31:50,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:31:50,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 19:31:50,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:50,401 INFO L225 Difference]: With dead ends: 39 [2022-11-18 19:31:50,401 INFO L226 Difference]: Without dead ends: 23 [2022-11-18 19:31:50,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:31:50,403 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:50,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 65 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:31:50,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-18 19:31:50,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-11-18 19:31:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:31:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-18 19:31:50,412 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 10 [2022-11-18 19:31:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:50,412 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-18 19:31:50,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:50,413 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-18 19:31:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:31:50,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:50,414 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:50,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:50,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:50,625 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:50,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:50,626 INFO L85 PathProgramCache]: Analyzing trace with hash 775784678, now seen corresponding path program 2 times [2022-11-18 19:31:50,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:50,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157647284] [2022-11-18 19:31:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:50,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:50,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:50,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157647284] [2022-11-18 19:31:50,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157647284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:50,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574050008] [2022-11-18 19:31:50,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:31:50,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:50,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:50,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:50,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:31:50,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:31:50,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:31:50,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:31:50,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:51,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:31:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:51,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574050008] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:31:51,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:31:51,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-18 19:31:51,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302891921] [2022-11-18 19:31:51,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:31:51,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:31:51,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:51,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:31:51,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:31:51,187 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:51,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:51,678 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2022-11-18 19:31:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:31:51,679 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 19:31:51,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:51,680 INFO L225 Difference]: With dead ends: 48 [2022-11-18 19:31:51,681 INFO L226 Difference]: Without dead ends: 29 [2022-11-18 19:31:51,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:31:51,683 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:51,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 98 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:31:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-18 19:31:51,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-11-18 19:31:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:31:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-18 19:31:51,693 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 13 [2022-11-18 19:31:51,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:51,694 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-18 19:31:51,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:51,695 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-18 19:31:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:31:51,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:51,696 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:51,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:31:51,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 19:31:51,902 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:51,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:51,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2064634630, now seen corresponding path program 3 times [2022-11-18 19:31:51,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:51,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682343694] [2022-11-18 19:31:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:51,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:52,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:52,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682343694] [2022-11-18 19:31:52,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682343694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:31:52,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887749304] [2022-11-18 19:31:52,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:31:52,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:31:52,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:52,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:31:52,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:31:52,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 19:31:52,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:31:52,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:31:52,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:52,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:31:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:53,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887749304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:31:53,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:31:53,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-18 19:31:53,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733939988] [2022-11-18 19:31:53,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:31:53,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 19:31:53,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:53,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 19:31:53,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:31:53,129 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 25 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:00,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:00,997 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2022-11-18 19:32:00,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:32:00,998 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 19:32:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:00,999 INFO L225 Difference]: With dead ends: 66 [2022-11-18 19:32:00,999 INFO L226 Difference]: Without dead ends: 41 [2022-11-18 19:32:01,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:32:01,002 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:01,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 208 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:32:01,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-18 19:32:01,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2022-11-18 19:32:01,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:32:01,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2022-11-18 19:32:01,014 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 19 [2022-11-18 19:32:01,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:01,015 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2022-11-18 19:32:01,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:01,015 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-11-18 19:32:01,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 19:32:01,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:01,017 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:01,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:01,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:01,228 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:01,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:01,229 INFO L85 PathProgramCache]: Analyzing trace with hash -564256954, now seen corresponding path program 4 times [2022-11-18 19:32:01,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:01,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646070749] [2022-11-18 19:32:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:01,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:02,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:02,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646070749] [2022-11-18 19:32:02,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646070749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:02,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536712209] [2022-11-18 19:32:02,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:32:02,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:02,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:02,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:02,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:32:02,302 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:32:02,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:32:02,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-18 19:32:02,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:02,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:04,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536712209] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:04,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:32:04,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-11-18 19:32:04,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237763407] [2022-11-18 19:32:04,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:04,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 19:32:04,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:04,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 19:32:04,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=1682, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 19:32:04,443 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 49 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:39,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:39,952 INFO L93 Difference]: Finished difference Result 102 states and 134 transitions. [2022-11-18 19:34:39,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 19:34:39,953 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-18 19:34:39,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:39,955 INFO L225 Difference]: With dead ends: 102 [2022-11-18 19:34:39,955 INFO L226 Difference]: Without dead ends: 65 [2022-11-18 19:34:39,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 157.0s TimeCoverageRelationStatistics Valid=1745, Invalid=3222, Unknown=3, NotChecked=0, Total=4970 [2022-11-18 19:34:39,959 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:39,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 400 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:34:39,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-18 19:34:39,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2022-11-18 19:34:39,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 60 states have internal predecessors, (63), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:34:39,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2022-11-18 19:34:39,977 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 31 [2022-11-18 19:34:39,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:39,978 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2022-11-18 19:34:39,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:39,978 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2022-11-18 19:34:39,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 19:34:39,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:39,980 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:39,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:40,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 19:34:40,187 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:40,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:40,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2140772294, now seen corresponding path program 5 times [2022-11-18 19:34:40,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:40,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989901325] [2022-11-18 19:34:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:40,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:42,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:42,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989901325] [2022-11-18 19:34:42,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989901325] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:42,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107157813] [2022-11-18 19:34:42,879 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:34:42,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:42,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:42,891 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:42,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939d28a9-8993-4263-b088-123ea9ac4fa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:34:55,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2022-11-18 19:34:55,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:55,400 WARN L261 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-18 19:34:55,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:55,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:01,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107157813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:01,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:01,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2022-11-18 19:35:01,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200313351] [2022-11-18 19:35:01,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:01,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-11-18 19:35:01,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:01,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-11-18 19:35:01,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2494, Invalid=6818, Unknown=0, NotChecked=0, Total=9312 [2022-11-18 19:35:01,885 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 97 states, 97 states have (on average 1.0721649484536082) internal successors, (104), 97 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:08,520 WARN L233 SmtUtils]: Spent 24.21s on a formula simplification. DAG size of input: 190 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:36:10,537 WARN L837 $PredicateComparison]: unable to prove that (and (< (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 268435455) (< (mod (+ 3 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 22 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 1) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 11) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 33) 4294967296) 268435455) (< (mod (+ 6 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 39) 4294967296) 268435455) (< (mod (+ 9 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 13) 4294967296) 268435455) (< (mod (+ 14 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 10) 4294967296) 268435455) (< (mod (+ 31 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 26) 4294967296) 268435455) (< (mod (+ 41 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 17) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 15) 4294967296) 268435455) (< (mod (+ 23 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 8) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 43) 4294967296) 268435455) (< (mod (+ 2 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 45) 4294967296) 268435455) (< (mod (+ 42 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 5 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 18) 4294967296) 268435455) (< (mod (+ 19 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 37) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 38) 4294967296) 268435455) (< (mod (+ 32 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 16 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 36) 4294967296) 268435455) (< (mod (+ 21 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 44 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 28) 4294967296) 268435455) (< (mod (+ 35 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 27) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 7 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 25) 4294967296) 268435455) (< (mod (+ 30 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 29 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) is different from false [2022-11-18 19:36:12,561 WARN L837 $PredicateComparison]: unable to prove that (and (< (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 268435455) (< (mod (+ 3 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 22 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 1) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 11) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 33) 4294967296) 268435455) (< (mod (+ 6 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 39) 4294967296) 268435455) (< (mod (+ 9 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 13) 4294967296) 268435455) (< (mod (+ 14 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 10) 4294967296) 268435455) (< (mod (+ 31 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 26) 4294967296) 268435455) (< (mod (+ 41 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 17) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 15) 4294967296) 268435455) (< (mod (+ 23 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 8) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 43) 4294967296) 268435455) (< (mod (+ 2 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 42 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 5 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 18) 4294967296) 268435455) (< (mod (+ 19 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 37) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 38) 4294967296) 268435455) (< (mod (+ 32 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 16 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 36) 4294967296) 268435455) (< (mod (+ 21 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 44 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 28) 4294967296) 268435455) (< (mod (+ 35 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 27) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 7 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 25) 4294967296) 268435455) (< (mod (+ 30 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 29 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) is different from false [2022-11-18 19:37:22,477 WARN L233 SmtUtils]: Spent 15.21s on a formula simplification. DAG size of input: 178 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:38:36,284 WARN L233 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 174 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:39:59,251 WARN L233 SmtUtils]: Spent 25.46s on a formula simplification. DAG size of input: 170 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:40:53,825 WARN L233 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 166 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:42:07,814 WARN L233 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 162 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:42:09,844 WARN L837 $PredicateComparison]: unable to prove that (and (< (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 268435455) (< (mod (+ 3 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 22 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 1) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 11) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 33) 4294967296) 268435455) (< (mod (+ 6 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 9 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 13) 4294967296) 268435455) (< (mod (+ 14 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 10) 4294967296) 268435455) (< (mod (+ 31 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 26) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 17) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 15) 4294967296) 268435455) (< (mod (+ 23 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 8) 4294967296) 268435455) (< (mod (+ 2 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 5 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 18) 4294967296) 268435455) (< (mod (+ 19 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 37) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 38) 4294967296) 268435455) (< (mod (+ 32 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 16 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 36) 4294967296) 268435455) (< (mod (+ 21 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 28) 4294967296) 268435455) (< (mod (+ 35 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 27) 4294967296) 268435455) (< (mod (+ 7 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 25) 4294967296) 268435455) (< (mod (+ 30 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 29 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) is different from false [2022-11-18 19:43:11,728 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 154 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:44:22,930 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 150 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:45:36,065 WARN L233 SmtUtils]: Spent 7.44s on a formula simplification. DAG size of input: 146 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:46:41,559 WARN L233 SmtUtils]: Spent 8.71s on a formula simplification. DAG size of input: 142 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)