./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/prefixsum_rec.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/verifythis/prefixsum_rec.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN --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 81bdf17d0130e934dcb31a2f76f595e947b99d6273334b7f05365a624466aeab --- 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-6b4ec56 [2022-11-20 12:21:58,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:21:58,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:21:58,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:21:58,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:21:58,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:21:58,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:21:58,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:21:58,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:21:58,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:21:58,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:21:58,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:21:58,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:21:58,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:21:58,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:21:58,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:21:58,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:21:58,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:21:58,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:21:58,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:21:58,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:21:58,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:21:58,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:21:58,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:21:58,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:21:58,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:21:58,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:21:58,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:21:58,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:21:58,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:21:58,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:21:58,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:21:58,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:21:58,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:21:58,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:21:58,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:21:58,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:21:58,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:21:58,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:21:58,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:21:58,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:21:58,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:21:58,361 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:21:58,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:21:58,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:21:58,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:21:58,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:21:58,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:21:58,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:21:58,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:21:58,364 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:21:58,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:21:58,365 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:21:58,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:21:58,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:21:58,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:21:58,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:21:58,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:21:58,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:21:58,367 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:21:58,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:21:58,367 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:21:58,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:21:58,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:21:58,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:21:58,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:21:58,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:21:58,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:21:58,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:21:58,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:21:58,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:21:58,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:21:58,370 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:21:58,370 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:21:58,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:21:58,371 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_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81bdf17d0130e934dcb31a2f76f595e947b99d6273334b7f05365a624466aeab [2022-11-20 12:21:58,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:21:58,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:21:58,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:21:58,722 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:21:58,722 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:21:58,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/verifythis/prefixsum_rec.c [2022-11-20 12:22:02,120 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:22:02,342 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:22:02,347 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/sv-benchmarks/c/verifythis/prefixsum_rec.c [2022-11-20 12:22:02,356 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/data/da7775f4b/ca8f7ddce13644f0a667967417b53d97/FLAG3d370ddc2 [2022-11-20 12:22:02,373 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/data/da7775f4b/ca8f7ddce13644f0a667967417b53d97 [2022-11-20 12:22:02,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:22:02,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:22:02,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:22:02,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:22:02,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:22:02,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:22:02" (1/1) ... [2022-11-20 12:22:02,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@81efad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:02, skipping insertion in model container [2022-11-20 12:22:02,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:22:02" (1/1) ... [2022-11-20 12:22:02,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:22:02,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:22:02,599 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/sv-benchmarks/c/verifythis/prefixsum_rec.c[525,538] [2022-11-20 12:22:02,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:22:02,666 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:22:02,683 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/sv-benchmarks/c/verifythis/prefixsum_rec.c[525,538] [2022-11-20 12:22:02,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:22:02,729 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:22:02,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:02 WrapperNode [2022-11-20 12:22:02,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:22:02,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:22:02,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:22:02,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:22:02,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:02" (1/1) ... [2022-11-20 12:22:02,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:02" (1/1) ... [2022-11-20 12:22:02,794 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2022-11-20 12:22:02,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:22:02,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:22:02,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:22:02,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:22:02,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:02" (1/1) ... [2022-11-20 12:22:02,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:02" (1/1) ... [2022-11-20 12:22:02,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:02" (1/1) ... [2022-11-20 12:22:02,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:02" (1/1) ... [2022-11-20 12:22:02,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:02" (1/1) ... [2022-11-20 12:22:02,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:02" (1/1) ... [2022-11-20 12:22:02,845 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:02" (1/1) ... [2022-11-20 12:22:02,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:02" (1/1) ... [2022-11-20 12:22:02,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:22:02,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:22:02,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:22:02,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:22:02,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:02" (1/1) ... [2022-11-20 12:22:02,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:22:02,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:22:02,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:22:02,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:22:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:22:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:22:02,945 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:22:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:22:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure downsweep [2022-11-20 12:22:02,945 INFO L138 BoogieDeclarations]: Found implementation of procedure downsweep [2022-11-20 12:22:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:22:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:22:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure upsweep [2022-11-20 12:22:02,946 INFO L138 BoogieDeclarations]: Found implementation of procedure upsweep [2022-11-20 12:22:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:22:02,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:22:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:22:02,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 12:22:02,947 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 12:22:02,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:22:03,049 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:22:03,052 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:22:03,332 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:22:03,347 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:22:03,347 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 12:22:03,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:22:03 BoogieIcfgContainer [2022-11-20 12:22:03,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:22:03,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:22:03,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:22:03,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:22:03,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:22:02" (1/3) ... [2022-11-20 12:22:03,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a288917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:22:03, skipping insertion in model container [2022-11-20 12:22:03,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:02" (2/3) ... [2022-11-20 12:22:03,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a288917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:22:03, skipping insertion in model container [2022-11-20 12:22:03,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:22:03" (3/3) ... [2022-11-20 12:22:03,364 INFO L112 eAbstractionObserver]: Analyzing ICFG prefixsum_rec.c [2022-11-20 12:22:03,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:22:03,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:22:03,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:22:03,465 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;@3bac37ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:22:03,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:22:03,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 36 states have internal predecessors, (44), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 12:22:03,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 12:22:03,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:03,482 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:03,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:03,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1639330660, now seen corresponding path program 1 times [2022-11-20 12:22:03,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:03,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292640200] [2022-11-20 12:22:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:03,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:03,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:22:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 12:22:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:03,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:22:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:03,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:22:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:03,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 12:22:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:22:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:03,974 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:22:03,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:03,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292640200] [2022-11-20 12:22:03,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292640200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:03,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:03,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:22:03,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804866804] [2022-11-20 12:22:03,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:03,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:22:03,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:04,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:22:04,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:22:04,041 INFO L87 Difference]: Start difference. First operand has 49 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 36 states have internal predecessors, (44), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:22:04,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:04,191 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2022-11-20 12:22:04,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:22:04,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2022-11-20 12:22:04,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:04,202 INFO L225 Difference]: With dead ends: 96 [2022-11-20 12:22:04,202 INFO L226 Difference]: Without dead ends: 46 [2022-11-20 12:22:04,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:22:04,209 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:04,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 85 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:22:04,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-20 12:22:04,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-11-20 12:22:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 12:22:04,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2022-11-20 12:22:04,251 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 44 [2022-11-20 12:22:04,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:04,251 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2022-11-20 12:22:04,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:22:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2022-11-20 12:22:04,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 12:22:04,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:04,261 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:04,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:22:04,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:04,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:04,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1439199646, now seen corresponding path program 1 times [2022-11-20 12:22:04,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:04,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711124442] [2022-11-20 12:22:04,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:04,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:04,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:22:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:04,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 12:22:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:04,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:22:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:04,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:22:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:04,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 12:22:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:04,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:22:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:22:04,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:04,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711124442] [2022-11-20 12:22:04,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711124442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:04,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:04,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:22:04,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459559571] [2022-11-20 12:22:04,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:04,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:22:04,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:04,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:22:04,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:22:04,963 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:22:05,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:05,203 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2022-11-20 12:22:05,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:22:05,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2022-11-20 12:22:05,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:05,206 INFO L225 Difference]: With dead ends: 87 [2022-11-20 12:22:05,206 INFO L226 Difference]: Without dead ends: 71 [2022-11-20 12:22:05,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:22:05,208 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 36 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:05,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 210 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:22:05,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-20 12:22:05,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 46. [2022-11-20 12:22:05,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 12:22:05,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2022-11-20 12:22:05,220 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 44 [2022-11-20 12:22:05,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:05,221 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2022-11-20 12:22:05,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:22:05,221 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2022-11-20 12:22:05,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:22:05,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:05,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:05,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:22:05,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1012024996, now seen corresponding path program 1 times [2022-11-20 12:22:05,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:05,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245459694] [2022-11-20 12:22:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:05,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:22:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 12:22:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:22:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:05,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:22:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:05,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 12:22:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:05,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:22:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:22:05,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:05,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245459694] [2022-11-20 12:22:05,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245459694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:22:05,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840404955] [2022-11-20 12:22:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:05,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:22:05,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:22:05,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:22:05,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:22:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:05,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:22:05,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:22:06,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:22:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:22:06,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840404955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:22:06,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:22:06,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-11-20 12:22:06,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058311877] [2022-11-20 12:22:06,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:22:06,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:22:06,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:06,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:22:06,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:22:06,204 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 12:22:06,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:06,481 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2022-11-20 12:22:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:22:06,482 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 46 [2022-11-20 12:22:06,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:06,486 INFO L225 Difference]: With dead ends: 73 [2022-11-20 12:22:06,487 INFO L226 Difference]: Without dead ends: 50 [2022-11-20 12:22:06,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:22:06,488 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 40 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:06,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 252 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:22:06,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-20 12:22:06,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-11-20 12:22:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 12:22:06,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-11-20 12:22:06,497 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 46 [2022-11-20 12:22:06,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:06,498 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-11-20 12:22:06,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 12:22:06,498 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-11-20 12:22:06,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 12:22:06,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:06,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:06,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:22:06,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:22:06,706 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:06,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1298139546, now seen corresponding path program 2 times [2022-11-20 12:22:06,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:06,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688537934] [2022-11-20 12:22:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:06,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:08,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:22:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:08,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 12:22:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:22:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:08,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:22:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:08,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:22:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:08,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:22:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:22:09,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:09,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688537934] [2022-11-20 12:22:09,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688537934] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:22:09,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944907829] [2022-11-20 12:22:09,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:22:09,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:22:09,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:22:09,436 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:22:09,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:22:09,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:22:09,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:22:09,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-20 12:22:09,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:09,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 12:22:09,824 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_123 Int) (downsweep_~left Int)) (and (= (store |c_old(#memory_int)| |c_downsweep_#in~a.base| (let ((.cse0 (select |c_old(#memory_int)| |c_downsweep_#in~a.base|)) (.cse1 (+ |c_downsweep_#in~a.offset| (* |c_downsweep_#in~right| 4)))) (store (store .cse0 .cse1 v_ArrVal_123) (+ |c_downsweep_#in~a.offset| (* downsweep_~left 4)) (select .cse0 .cse1)))) |c_#memory_int|) (<= downsweep_~left |c_downsweep_#in~left|) (not (< (+ downsweep_~left 1) |c_downsweep_#in~right|)))) is different from true [2022-11-20 12:22:09,876 INFO L321 Elim1Store]: treesize reduction 34, result has 26.1 percent of original size [2022-11-20 12:22:09,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 27 [2022-11-20 12:22:10,063 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-20 12:22:10,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2022-11-20 12:22:10,092 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:22:10,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:22:10,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944907829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:22:10,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:22:10,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 28 [2022-11-20 12:22:10,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503367209] [2022-11-20 12:22:10,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:22:10,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:22:10,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:10,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:22:10,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=772, Unknown=1, NotChecked=56, Total=930 [2022-11-20 12:22:10,422 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 28 states, 25 states have (on average 2.16) internal successors, (54), 23 states have internal predecessors, (54), 7 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 12:22:11,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:11,840 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2022-11-20 12:22:11,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:22:11,842 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 23 states have internal predecessors, (54), 7 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 48 [2022-11-20 12:22:11,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:11,844 INFO L225 Difference]: With dead ends: 65 [2022-11-20 12:22:11,844 INFO L226 Difference]: Without dead ends: 63 [2022-11-20 12:22:11,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=201, Invalid=1442, Unknown=1, NotChecked=78, Total=1722 [2022-11-20 12:22:11,846 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 58 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:11,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 300 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 458 Invalid, 0 Unknown, 116 Unchecked, 0.5s Time] [2022-11-20 12:22:11,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-20 12:22:11,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2022-11-20 12:22:11,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.135135135135135) internal successors, (42), 38 states have internal predecessors, (42), 10 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-20 12:22:11,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2022-11-20 12:22:11,871 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 48 [2022-11-20 12:22:11,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:11,872 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2022-11-20 12:22:11,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 23 states have internal predecessors, (54), 7 states have call successors, (10), 2 states have call predecessors, (10), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 12:22:11,872 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2022-11-20 12:22:11,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 12:22:11,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:11,877 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:11,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:22:12,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:22:12,098 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:12,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:12,098 INFO L85 PathProgramCache]: Analyzing trace with hash 736701521, now seen corresponding path program 1 times [2022-11-20 12:22:12,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:12,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221691054] [2022-11-20 12:22:12,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:12,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:12,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:22:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:12,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 12:22:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:12,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:22:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:12,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:22:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:12,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:22:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:12,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:22:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:22:12,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:12,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221691054] [2022-11-20 12:22:12,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221691054] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:22:12,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433823504] [2022-11-20 12:22:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:12,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:22:12,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:22:12,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:22:12,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:22:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:12,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-20 12:22:12,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:12,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:22:12,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-20 12:22:12,799 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:22:12,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:22:12,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:22:12,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-11-20 12:22:12,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-11-20 12:22:13,252 WARN L859 $PredicateComparison]: unable to prove that (exists ((upsweep_~right Int) (upsweep_~a.offset Int) (v_ArrVal_177 Int)) (and (<= |c_upsweep_#in~right| upsweep_~right) (<= upsweep_~right (+ |c_upsweep_#in~left| 1)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_upsweep_#in~a.base| (store (select |c_old(#memory_int)| |c_upsweep_#in~a.base|) (+ (* upsweep_~right 4) upsweep_~a.offset) v_ArrVal_177))) (<= |c_upsweep_#in~a.offset| upsweep_~a.offset))) is different from true [2022-11-20 12:22:13,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2022-11-20 12:22:13,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 44 [2022-11-20 12:22:13,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 123 [2022-11-20 12:22:14,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 121 [2022-11-20 12:22:14,935 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:22:14,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:22:52,113 WARN L233 SmtUtils]: Spent 8.13s on a formula simplification. DAG size of input: 59 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:22:52,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433823504] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:22:52,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:22:52,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 28] total 35 [2022-11-20 12:22:52,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859362887] [2022-11-20 12:22:52,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:22:52,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 12:22:52,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:52,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 12:22:52,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1570, Unknown=13, NotChecked=80, Total=1806 [2022-11-20 12:22:52,118 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand has 35 states, 31 states have (on average 2.096774193548387) internal successors, (65), 29 states have internal predecessors, (65), 7 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 12:22:59,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:59,780 INFO L93 Difference]: Finished difference Result 113 states and 145 transitions. [2022-11-20 12:22:59,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 12:22:59,781 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 2.096774193548387) internal successors, (65), 29 states have internal predecessors, (65), 7 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 52 [2022-11-20 12:22:59,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:59,783 INFO L225 Difference]: With dead ends: 113 [2022-11-20 12:22:59,783 INFO L226 Difference]: Without dead ends: 85 [2022-11-20 12:22:59,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=293, Invalid=3117, Unknown=16, NotChecked=114, Total=3540 [2022-11-20 12:22:59,786 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 398 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:59,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 270 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 509 Invalid, 0 Unknown, 398 Unchecked, 0.6s Time] [2022-11-20 12:22:59,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-20 12:22:59,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2022-11-20 12:22:59,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 61 states have internal predecessors, (67), 15 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) [2022-11-20 12:22:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 105 transitions. [2022-11-20 12:22:59,812 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 105 transitions. Word has length 52 [2022-11-20 12:22:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:59,812 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 105 transitions. [2022-11-20 12:22:59,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 2.096774193548387) internal successors, (65), 29 states have internal predecessors, (65), 7 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 12:22:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 105 transitions. [2022-11-20 12:22:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 12:22:59,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:59,815 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:59,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 12:23:00,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:00,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:00,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:00,022 INFO L85 PathProgramCache]: Analyzing trace with hash -362686961, now seen corresponding path program 2 times [2022-11-20 12:23:00,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:00,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113828674] [2022-11-20 12:23:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:00,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:00,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:23:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:00,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 12:23:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:00,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:23:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:00,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:23:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:00,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:23:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:00,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 12:23:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:23:00,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:00,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113828674] [2022-11-20 12:23:00,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113828674] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:00,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449243603] [2022-11-20 12:23:00,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:23:00,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:00,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:00,268 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:23:00,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:23:00,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:23:00,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:23:00,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:23:00,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:23:00,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:23:00,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449243603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:23:00,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:23:00,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 15 [2022-11-20 12:23:00,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221614610] [2022-11-20 12:23:00,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:00,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:23:00,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:00,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:23:00,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:23:00,661 INFO L87 Difference]: Start difference. First operand 83 states and 105 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 12:23:01,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:01,056 INFO L93 Difference]: Finished difference Result 112 states and 141 transitions. [2022-11-20 12:23:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:23:01,057 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 54 [2022-11-20 12:23:01,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:01,058 INFO L225 Difference]: With dead ends: 112 [2022-11-20 12:23:01,058 INFO L226 Difference]: Without dead ends: 92 [2022-11-20 12:23:01,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:23:01,060 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 33 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:01,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 364 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:23:01,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-20 12:23:01,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2022-11-20 12:23:01,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 62 states have internal predecessors, (68), 16 states have call successors, (16), 5 states have call predecessors, (16), 7 states have return successors, (23), 17 states have call predecessors, (23), 16 states have call successors, (23) [2022-11-20 12:23:01,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2022-11-20 12:23:01,081 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 54 [2022-11-20 12:23:01,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:01,082 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2022-11-20 12:23:01,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 12:23:01,082 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2022-11-20 12:23:01,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 12:23:01,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:01,084 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:01,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:01,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:01,290 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:01,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:01,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1333958502, now seen corresponding path program 1 times [2022-11-20 12:23:01,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:01,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146805485] [2022-11-20 12:23:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:01,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:01,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:23:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:01,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:23:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:01,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:23:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:01,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:23:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:01,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 12:23:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:01,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:23:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:23:01,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:01,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146805485] [2022-11-20 12:23:01,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146805485] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:01,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335987923] [2022-11-20 12:23:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:01,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:01,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:01,576 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:23:01,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:23:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:01,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:23:01,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 12:23:01,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 12:23:01,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335987923] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:23:01,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:23:01,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 16 [2022-11-20 12:23:01,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574428076] [2022-11-20 12:23:01,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:01,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:23:01,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:01,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:23:01,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:23:01,925 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:23:02,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:02,252 INFO L93 Difference]: Finished difference Result 121 states and 146 transitions. [2022-11-20 12:23:02,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:23:02,253 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2022-11-20 12:23:02,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:02,254 INFO L225 Difference]: With dead ends: 121 [2022-11-20 12:23:02,254 INFO L226 Difference]: Without dead ends: 105 [2022-11-20 12:23:02,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 115 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:23:02,256 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 74 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:02,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 340 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:23:02,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-20 12:23:02,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2022-11-20 12:23:02,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.126984126984127) internal successors, (71), 64 states have internal predecessors, (71), 16 states have call successors, (16), 5 states have call predecessors, (16), 7 states have return successors, (22), 17 states have call predecessors, (22), 16 states have call successors, (22) [2022-11-20 12:23:02,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2022-11-20 12:23:02,277 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 57 [2022-11-20 12:23:02,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:02,277 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2022-11-20 12:23:02,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:23:02,278 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2022-11-20 12:23:02,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 12:23:02,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:02,279 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:02,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:02,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:23:02,485 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:02,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:02,485 INFO L85 PathProgramCache]: Analyzing trace with hash 33191180, now seen corresponding path program 1 times [2022-11-20 12:23:02,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:02,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109696607] [2022-11-20 12:23:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:02,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:02,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:23:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:02,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:23:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:02,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:23:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:02,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:23:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:02,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 12:23:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:02,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:23:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:23:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:02,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:23:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:02,753 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 12:23:02,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:02,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109696607] [2022-11-20 12:23:02,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109696607] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:02,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334827720] [2022-11-20 12:23:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:02,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:02,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:02,756 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:23:02,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:23:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:02,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:23:02,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 12:23:03,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:23:03,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334827720] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:23:03,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:23:03,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 20 [2022-11-20 12:23:03,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492602701] [2022-11-20 12:23:03,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:03,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:23:03,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:03,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:23:03,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:23:03,476 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-20 12:23:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:04,030 INFO L93 Difference]: Finished difference Result 103 states and 127 transitions. [2022-11-20 12:23:04,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:23:04,031 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 59 [2022-11-20 12:23:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:04,032 INFO L225 Difference]: With dead ends: 103 [2022-11-20 12:23:04,032 INFO L226 Difference]: Without dead ends: 92 [2022-11-20 12:23:04,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2022-11-20 12:23:04,033 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 99 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:04,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 293 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:23:04,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-20 12:23:04,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2022-11-20 12:23:04,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 63 states have (on average 1.126984126984127) internal successors, (71), 65 states have internal predecessors, (71), 17 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) [2022-11-20 12:23:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 111 transitions. [2022-11-20 12:23:04,053 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 111 transitions. Word has length 59 [2022-11-20 12:23:04,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:04,054 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 111 transitions. [2022-11-20 12:23:04,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-20 12:23:04,054 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 111 transitions. [2022-11-20 12:23:04,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 12:23:04,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:04,055 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:04,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:04,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:04,261 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:04,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:04,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1099509749, now seen corresponding path program 1 times [2022-11-20 12:23:04,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:04,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134722537] [2022-11-20 12:23:04,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:04,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:04,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:23:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:04,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:23:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:23:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:04,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:23:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:04,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 12:23:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:04,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:23:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:04,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:23:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:04,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 12:23:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:04,564 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 12:23:04,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:04,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134722537] [2022-11-20 12:23:04,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134722537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:04,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697084907] [2022-11-20 12:23:04,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:04,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:04,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:04,580 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:23:04,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:23:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:04,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:23:04,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 12:23:04,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 12:23:05,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697084907] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:23:05,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:23:05,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2022-11-20 12:23:05,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851755370] [2022-11-20 12:23:05,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:05,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:23:05,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:05,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:23:05,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:23:05,218 INFO L87 Difference]: Start difference. First operand 89 states and 111 transitions. Second operand has 20 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 7 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-20 12:23:05,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:05,432 INFO L93 Difference]: Finished difference Result 100 states and 124 transitions. [2022-11-20 12:23:05,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:23:05,433 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 7 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) Word has length 65 [2022-11-20 12:23:05,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:05,434 INFO L225 Difference]: With dead ends: 100 [2022-11-20 12:23:05,434 INFO L226 Difference]: Without dead ends: 73 [2022-11-20 12:23:05,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:23:05,435 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 25 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:05,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 198 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:23:05,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-20 12:23:05,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 58. [2022-11-20 12:23:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-20 12:23:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2022-11-20 12:23:05,453 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 65 [2022-11-20 12:23:05,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:05,453 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2022-11-20 12:23:05,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 7 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-20 12:23:05,454 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2022-11-20 12:23:05,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 12:23:05,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:05,456 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:05,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:05,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:05,668 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:05,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:05,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1124650442, now seen corresponding path program 1 times [2022-11-20 12:23:05,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:05,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634219058] [2022-11-20 12:23:05,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:05,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:06,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:23:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:06,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 12:23:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:06,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:23:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:06,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:23:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:23:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:23:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:06,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:23:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:06,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 12:23:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:06,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:23:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:06,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:23:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 12:23:06,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:06,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634219058] [2022-11-20 12:23:06,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634219058] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:06,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068619546] [2022-11-20 12:23:06,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:06,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:06,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:06,154 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:23:06,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:23:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:06,336 WARN L261 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 179 conjunts are in the unsatisfiable core [2022-11-20 12:23:06,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:06,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:23:06,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-20 12:23:06,541 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:23:06,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:23:06,576 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_482 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_482) |c_#memory_int|)) is different from true [2022-11-20 12:23:06,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-20 12:23:06,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-20 12:23:06,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-20 12:23:06,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-20 12:23:07,020 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_486 Int)) (= (store |c_old(#memory_int)| |c_upsweep_#in~a.base| (store (select |c_old(#memory_int)| |c_upsweep_#in~a.base|) (+ (* |c_upsweep_#in~right| 4) |c_upsweep_#in~a.offset|) v_ArrVal_486)) |c_#memory_int|)) is different from true [2022-11-20 12:23:07,146 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_488 Int)) (= (store |c_old(#memory_int)| |c_upsweep_#in~a.base| (store (select |c_old(#memory_int)| |c_upsweep_#in~a.base|) (+ (* |c_upsweep_#in~right| 4) |c_upsweep_#in~a.offset|) v_ArrVal_488)) |c_#memory_int|)) is different from true [2022-11-20 12:23:09,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2022-11-20 12:23:09,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 33 [2022-11-20 12:23:09,837 WARN L859 $PredicateComparison]: unable to prove that (exists ((downsweep_~left Int)) (and (= (store |c_old(#memory_int)| |c_downsweep_#in~a.base| (let ((.cse0 (select |c_old(#memory_int)| |c_downsweep_#in~a.base|)) (.cse1 (+ |c_downsweep_#in~a.offset| (* |c_downsweep_#in~right| 4)))) (let ((.cse3 (+ |c_downsweep_#in~a.offset| (* downsweep_~left 4))) (.cse2 (select .cse0 .cse1))) (store (store .cse0 .cse1 (+ .cse2 (select .cse0 .cse3))) .cse3 .cse2)))) |c_#memory_int|) (<= downsweep_~left |c_downsweep_#in~left|) (not (< (+ downsweep_~left 1) |c_downsweep_#in~right|)))) is different from true [2022-11-20 12:23:10,094 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_500 Int) (downsweep_~left Int) (downsweep_~right Int) (downsweep_~a.offset Int) (v_ArrVal_501 Int)) (and (<= |c_downsweep_#in~right| downsweep_~right) (= |c_#memory_int| (store |c_old(#memory_int)| |c_downsweep_#in~a.base| (store (store (select |c_old(#memory_int)| |c_downsweep_#in~a.base|) (+ downsweep_~a.offset (* downsweep_~right 4)) v_ArrVal_501) (+ downsweep_~a.offset (* downsweep_~left 4)) v_ArrVal_500))) (<= |c_downsweep_#in~left| downsweep_~left) (<= |c_downsweep_#in~a.offset| downsweep_~a.offset))) is different from true [2022-11-20 12:23:10,280 WARN L859 $PredicateComparison]: unable to prove that (and (< (+ |c_downsweep_#in~left| 1) |c_downsweep_#in~right|) (exists ((v_ArrVal_500 Int) (v_downsweep_~left_41 Int) (v_ArrVal_495 Int) (downsweep_~left Int) (v_downsweep_~right_41 Int) (v_downsweep_~a.offset_41 Int) (v_ArrVal_501 Int)) (and (<= |c_downsweep_#in~right| v_downsweep_~right_41) (<= (+ |c_downsweep_#in~right| v_downsweep_~left_41) (+ |c_downsweep_#in~left| downsweep_~left)) (<= (+ |c_downsweep_#in~right| (* 2 v_downsweep_~left_41)) (+ (* |c_downsweep_#in~left| 3) 1)) (<= |c_downsweep_#in~a.offset| v_downsweep_~a.offset_41) (not (< (+ 1 v_downsweep_~left_41) |c_downsweep_#in~left|)) (= (store |c_old(#memory_int)| |c_downsweep_#in~a.base| (store (store (let ((.cse4 (select |c_old(#memory_int)| |c_downsweep_#in~a.base|)) (.cse5 (+ |c_downsweep_#in~a.offset| (* |c_downsweep_#in~right| 4)))) (let ((.cse3 (+ |c_downsweep_#in~a.offset| (* 4 v_downsweep_~left_41))) (.cse2 (select .cse4 .cse5))) (store (let ((.cse0 (store .cse4 .cse5 v_ArrVal_495)) (.cse1 (+ |c_downsweep_#in~a.offset| (* |c_downsweep_#in~left| 4)))) (store .cse0 .cse1 (+ (select (store .cse0 .cse1 .cse2) .cse3) .cse2))) .cse3 .cse2))) (+ (* v_downsweep_~right_41 4) v_downsweep_~a.offset_41) v_ArrVal_501) (+ v_downsweep_~a.offset_41 (* downsweep_~left 4)) v_ArrVal_500)) |c_#memory_int|)))) is different from true [2022-11-20 12:23:10,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 123 [2022-11-20 12:23:12,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 151 [2022-11-20 12:23:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 16 not checked. [2022-11-20 12:23:12,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:14,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068619546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:14,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:23:14,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 39] total 48 [2022-11-20 12:23:14,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167065888] [2022-11-20 12:23:14,318 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:14,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 12:23:14,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:14,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 12:23:14,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1932, Unknown=6, NotChecked=558, Total=2652 [2022-11-20 12:23:14,320 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 48 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 40 states have internal predecessors, (79), 13 states have call successors, (19), 3 states have call predecessors, (19), 10 states have return successors, (19), 11 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-20 12:23:16,004 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_old(#memory_int)| |c_upsweep_#in~a.base|)) (.cse1 (+ (* |c_upsweep_#in~right| 4) |c_upsweep_#in~a.offset|))) (and (exists ((v_ArrVal_488 Int)) (= (store |c_old(#memory_int)| |c_upsweep_#in~a.base| (store .cse0 .cse1 v_ArrVal_488)) |c_#memory_int|)) (exists ((v_ArrVal_486 Int)) (= (store |c_old(#memory_int)| |c_upsweep_#in~a.base| (store .cse0 .cse1 v_ArrVal_486)) |c_#memory_int|)))) is different from true [2022-11-20 12:23:18,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:18,930 INFO L93 Difference]: Finished difference Result 124 states and 167 transitions. [2022-11-20 12:23:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-20 12:23:18,931 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 40 states have internal predecessors, (79), 13 states have call successors, (19), 3 states have call predecessors, (19), 10 states have return successors, (19), 11 states have call predecessors, (19), 13 states have call successors, (19) Word has length 72 [2022-11-20 12:23:18,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:18,933 INFO L225 Difference]: With dead ends: 124 [2022-11-20 12:23:18,934 INFO L226 Difference]: Without dead ends: 96 [2022-11-20 12:23:18,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=389, Invalid=4887, Unknown=8, NotChecked=1036, Total=6320 [2022-11-20 12:23:18,937 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 67 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1223 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:18,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 408 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 701 Invalid, 0 Unknown, 1223 Unchecked, 0.6s Time] [2022-11-20 12:23:18,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-20 12:23:18,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2022-11-20 12:23:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 64 states have internal predecessors, (69), 17 states have call successors, (17), 5 states have call predecessors, (17), 9 states have return successors, (33), 19 states have call predecessors, (33), 17 states have call successors, (33) [2022-11-20 12:23:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 119 transitions. [2022-11-20 12:23:18,956 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 119 transitions. Word has length 72 [2022-11-20 12:23:18,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:18,957 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 119 transitions. [2022-11-20 12:23:18,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 40 states have internal predecessors, (79), 13 states have call successors, (19), 3 states have call predecessors, (19), 10 states have return successors, (19), 11 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-20 12:23:18,957 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 119 transitions. [2022-11-20 12:23:18,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 12:23:18,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:18,958 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:18,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:19,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52180c26-3d6f-4266-9e20-a193f4d7364d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:23:19,173 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:19,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:19,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1763257480, now seen corresponding path program 2 times [2022-11-20 12:23:19,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:19,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758621199] [2022-11-20 12:23:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:19,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:30,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:23:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:30,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 12:23:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:30,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:23:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:30,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:23:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:30,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:23:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:31,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:23:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:23:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:32,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:23:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat