./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_o100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_o100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8 --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 a9f3959f9eef72d5f7423aa1eb092ce144135b5ae33d5bb31037a0c7e99b1293 --- 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-2329fc7 [2022-12-13 12:29:59,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:29:59,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:29:59,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:29:59,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:29:59,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:29:59,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:29:59,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:29:59,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:29:59,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:29:59,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:29:59,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:29:59,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:29:59,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:29:59,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:29:59,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:29:59,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:29:59,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:29:59,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:29:59,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:29:59,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:29:59,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:29:59,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:29:59,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:29:59,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:29:59,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:29:59,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:29:59,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:29:59,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:29:59,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:29:59,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:29:59,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:29:59,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:29:59,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:29:59,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:29:59,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:29:59,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:29:59,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:29:59,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:29:59,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:29:59,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:29:59,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 12:29:59,104 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:29:59,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:29:59,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:29:59,105 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:29:59,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:29:59,106 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:29:59,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:29:59,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:29:59,107 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:29:59,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:29:59,108 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:29:59,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:29:59,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:29:59,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:29:59,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:29:59,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:29:59,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:29:59,109 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:29:59,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:29:59,109 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:29:59,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:29:59,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:29:59,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:29:59,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:29:59,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:29:59,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:29:59,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:29:59,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:29:59,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:29:59,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:29:59,111 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:29:59,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:29:59,111 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:29:59,111 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:29:59,111 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:29:59,111 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9f3959f9eef72d5f7423aa1eb092ce144135b5ae33d5bb31037a0c7e99b1293 [2022-12-13 12:29:59,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:29:59,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:29:59,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:29:59,315 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:29:59,316 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:29:59,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/recursive-simple/id_o100.c [2022-12-13 12:30:01,961 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:30:02,085 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:30:02,085 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/sv-benchmarks/c/recursive-simple/id_o100.c [2022-12-13 12:30:02,090 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/data/bf6365ebb/8c593bbe7e5e41fd90aab815972d93f0/FLAG7fb657d7a [2022-12-13 12:30:02,103 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/data/bf6365ebb/8c593bbe7e5e41fd90aab815972d93f0 [2022-12-13 12:30:02,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:30:02,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:30:02,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:30:02,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:30:02,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:30:02,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:30:02" (1/1) ... [2022-12-13 12:30:02,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194d6061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:30:02, skipping insertion in model container [2022-12-13 12:30:02,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:30:02" (1/1) ... [2022-12-13 12:30:02,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:30:02,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:30:02,236 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_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/sv-benchmarks/c/recursive-simple/id_o100.c[518,531] [2022-12-13 12:30:02,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:30:02,247 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:30:02,256 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_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/sv-benchmarks/c/recursive-simple/id_o100.c[518,531] [2022-12-13 12:30:02,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:30:02,266 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:30:02,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:30:02 WrapperNode [2022-12-13 12:30:02,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:30:02,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:30:02,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:30:02,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:30:02,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:30:02" (1/1) ... [2022-12-13 12:30:02,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:30:02" (1/1) ... [2022-12-13 12:30:02,288 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-12-13 12:30:02,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:30:02,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:30:02,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:30:02,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:30:02,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:30:02" (1/1) ... [2022-12-13 12:30:02,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:30:02" (1/1) ... [2022-12-13 12:30:02,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:30:02" (1/1) ... [2022-12-13 12:30:02,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:30:02" (1/1) ... [2022-12-13 12:30:02,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:30:02" (1/1) ... [2022-12-13 12:30:02,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:30:02" (1/1) ... [2022-12-13 12:30:02,300 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:30:02" (1/1) ... [2022-12-13 12:30:02,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:30:02" (1/1) ... [2022-12-13 12:30:02,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:30:02,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:30:02,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:30:02,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:30:02,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:30:02" (1/1) ... [2022-12-13 12:30:02,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:30:02,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:30:02,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:30:02,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:30:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:30:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:30:02,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:30:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:30:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-12-13 12:30:02,356 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-12-13 12:30:02,411 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:30:02,413 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:30:02,481 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:30:02,486 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:30:02,486 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 12:30:02,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:30:02 BoogieIcfgContainer [2022-12-13 12:30:02,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:30:02,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:30:02,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:30:02,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:30:02,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:30:02" (1/3) ... [2022-12-13 12:30:02,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67262adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:30:02, skipping insertion in model container [2022-12-13 12:30:02,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:30:02" (2/3) ... [2022-12-13 12:30:02,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67262adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:30:02, skipping insertion in model container [2022-12-13 12:30:02,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:30:02" (3/3) ... [2022-12-13 12:30:02,494 INFO L112 eAbstractionObserver]: Analyzing ICFG id_o100.c [2022-12-13 12:30:02,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:30:02,509 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:30:02,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:30:02,549 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;@3feb0c64, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:30:02,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 12:30:02,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 12:30:02,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 12:30:02,558 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:30:02,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:02,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:30:02,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:02,563 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2022-12-13 12:30:02,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:02,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353127864] [2022-12-13 12:30:02,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:02,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:02,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:30:02,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:02,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353127864] [2022-12-13 12:30:02,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353127864] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:30:02,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:30:02,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:30:02,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343518790] [2022-12-13 12:30:02,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:30:02,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:30:02,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:02,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:30:02,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:30:02,829 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 12:30:02,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:30:02,867 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-12-13 12:30:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:30:02,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-12-13 12:30:02,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:30:02,875 INFO L225 Difference]: With dead ends: 28 [2022-12-13 12:30:02,875 INFO L226 Difference]: Without dead ends: 15 [2022-12-13 12:30:02,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:30:02,880 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:30:02,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:30:02,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-13 12:30:02,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-13 12:30:02,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 12:30:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-12-13 12:30:02,910 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2022-12-13 12:30:02,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:30:02,911 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-12-13 12:30:02,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 12:30:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-12-13 12:30:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 12:30:02,912 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:30:02,912 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:02,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:30:02,913 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:30:02,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2022-12-13 12:30:02,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:02,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254154858] [2022-12-13 12:30:02,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:02,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:03,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:30:03,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:03,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254154858] [2022-12-13 12:30:03,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254154858] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:30:03,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450067675] [2022-12-13 12:30:03,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:03,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:30:03,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:30:03,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:30:03,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:30:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:03,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 12:30:03,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:30:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:30:03,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:30:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:30:03,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450067675] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:30:03,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:30:03,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 12:30:03,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077900234] [2022-12-13 12:30:03,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:30:03,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 12:30:03,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:03,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 12:30:03,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:30:03,387 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 12:30:03,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:30:03,428 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-12-13 12:30:03,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:30:03,429 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 16 [2022-12-13 12:30:03,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:30:03,429 INFO L225 Difference]: With dead ends: 27 [2022-12-13 12:30:03,430 INFO L226 Difference]: Without dead ends: 21 [2022-12-13 12:30:03,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:30:03,431 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:30:03,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:30:03,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-13 12:30:03,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-13 12:30:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 12:30:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-12-13 12:30:03,437 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2022-12-13 12:30:03,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:30:03,438 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-12-13 12:30:03,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 12:30:03,438 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-12-13 12:30:03,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 12:30:03,439 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:30:03,439 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:03,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:30:03,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:30:03,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:30:03,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 2 times [2022-12-13 12:30:03,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:03,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132412285] [2022-12-13 12:30:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:03,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:03,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:03,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:03,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:04,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 12:30:04,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:04,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132412285] [2022-12-13 12:30:04,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132412285] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:30:04,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350006934] [2022-12-13 12:30:04,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:30:04,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:30:04,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:30:04,052 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:30:04,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:30:04,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:30:04,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:30:04,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 12:30:04,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:30:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 12:30:04,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:30:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 12:30:04,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350006934] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:30:04,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:30:04,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2022-12-13 12:30:04,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876820683] [2022-12-13 12:30:04,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:30:04,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 12:30:04,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:04,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 12:30:04,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-12-13 12:30:04,425 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2022-12-13 12:30:04,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:30:04,629 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-12-13 12:30:04,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 12:30:04,630 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) Word has length 28 [2022-12-13 12:30:04,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:30:04,631 INFO L225 Difference]: With dead ends: 39 [2022-12-13 12:30:04,631 INFO L226 Difference]: Without dead ends: 33 [2022-12-13 12:30:04,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-12-13 12:30:04,632 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:30:04,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:30:04,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-13 12:30:04,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-12-13 12:30:04,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-13 12:30:04,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-12-13 12:30:04,639 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2022-12-13 12:30:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:30:04,639 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-12-13 12:30:04,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2022-12-13 12:30:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-12-13 12:30:04,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 12:30:04,641 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:30:04,641 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:04,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:30:04,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:30:04,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:30:04,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:04,844 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 3 times [2022-12-13 12:30:04,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:04,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141088770] [2022-12-13 12:30:04,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:04,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:05,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:05,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:05,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:05,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:05,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 12:30:05,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:05,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141088770] [2022-12-13 12:30:05,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141088770] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:30:05,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295964660] [2022-12-13 12:30:05,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:30:05,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:30:05,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:30:05,584 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:30:05,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:30:05,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-12-13 12:30:05,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:30:05,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 12:30:05,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:30:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 12:30:05,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:30:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 12:30:06,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295964660] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:30:06,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:30:06,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2022-12-13 12:30:06,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858351524] [2022-12-13 12:30:06,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:30:06,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-13 12:30:06,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:06,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-13 12:30:06,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 12:30:06,474 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2022-12-13 12:30:09,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:30:09,363 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2022-12-13 12:30:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 12:30:09,363 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 52 [2022-12-13 12:30:09,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:30:09,365 INFO L225 Difference]: With dead ends: 63 [2022-12-13 12:30:09,365 INFO L226 Difference]: Without dead ends: 57 [2022-12-13 12:30:09,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=386, Invalid=1966, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 12:30:09,368 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:30:09,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 353 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 12:30:09,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-13 12:30:09,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-12-13 12:30:09,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 12:30:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2022-12-13 12:30:09,374 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 52 [2022-12-13 12:30:09,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:30:09,374 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2022-12-13 12:30:09,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2022-12-13 12:30:09,375 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2022-12-13 12:30:09,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 12:30:09,376 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:30:09,376 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:09,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 12:30:09,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:30:09,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:30:09,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:09,578 INFO L85 PathProgramCache]: Analyzing trace with hash 415287702, now seen corresponding path program 4 times [2022-12-13 12:30:09,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:09,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150288475] [2022-12-13 12:30:09,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:09,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:09,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:10,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:10,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:10,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:10,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:10,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:11,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:11,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:11,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:11,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:11,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:11,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:30:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-12-13 12:30:11,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:11,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150288475] [2022-12-13 12:30:11,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150288475] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:30:11,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137742945] [2022-12-13 12:30:11,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:30:11,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:30:11,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:30:11,473 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:30:11,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:30:11,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:30:11,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:30:11,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 68 conjunts are in the unsatisfiable core [2022-12-13 12:30:11,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:30:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-12-13 12:30:11,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:30:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-12-13 12:30:13,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137742945] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:30:13,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:30:13,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2022-12-13 12:30:13,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369184883] [2022-12-13 12:30:13,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:30:13,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-12-13 12:30:13,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:13,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-12-13 12:30:13,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=620, Invalid=4072, Unknown=0, NotChecked=0, Total=4692 [2022-12-13 12:30:13,769 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) [2022-12-13 12:30:37,595 WARN L233 SmtUtils]: Spent 19.04s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:30:59,987 WARN L233 SmtUtils]: Spent 16.44s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:31:19,593 WARN L233 SmtUtils]: Spent 10.99s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:31:34,628 WARN L233 SmtUtils]: Spent 10.20s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:31:46,870 WARN L233 SmtUtils]: Spent 6.60s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:32:00,303 WARN L233 SmtUtils]: Spent 9.14s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:32:08,390 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:32:16,519 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:32:52,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:32:52,993 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2022-12-13 12:32:52,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-12-13 12:32:52,994 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) Word has length 100 [2022-12-13 12:32:52,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:32:52,996 INFO L225 Difference]: With dead ends: 111 [2022-12-13 12:32:52,996 INFO L226 Difference]: Without dead ends: 105 [2022-12-13 12:32:52,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 159.5s TimeCoverageRelationStatistics Valid=1530, Invalid=7781, Unknown=1, NotChecked=0, Total=9312 [2022-12-13 12:32:52,998 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:32:52,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 985 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 12:32:52,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-13 12:32:53,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-12-13 12:32:53,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 71 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (33), 32 states have call predecessors, (33), 2 states have call successors, (33) [2022-12-13 12:32:53,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2022-12-13 12:32:53,006 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 100 [2022-12-13 12:32:53,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:32:53,006 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2022-12-13 12:32:53,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) [2022-12-13 12:32:53,007 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2022-12-13 12:32:53,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-12-13 12:32:53,008 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:32:53,008 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:32:53,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:32:53,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:32:53,210 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:32:53,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:32:53,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1665704854, now seen corresponding path program 5 times [2022-12-13 12:32:53,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:32:53,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782004166] [2022-12-13 12:32:53,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:32:53,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:32:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:53,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:54,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:54,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:54,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:55,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:56,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:56,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:56,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:56,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:57,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:57,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:57,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:57,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:57,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:57,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:58,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:58,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:58,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:58,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:58,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:58,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:59,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:59,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:59,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:59,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:59,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:59,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:59,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:32:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2022-12-13 12:32:59,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:32:59,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782004166] [2022-12-13 12:32:59,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782004166] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:32:59,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303682460] [2022-12-13 12:32:59,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:32:59,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:32:59,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:32:59,682 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:32:59,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1aa6dd8-0e0f-4050-b151-409ad85a99b9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:33:12,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-12-13 12:33:12,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:33:12,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 132 conjunts are in the unsatisfiable core [2022-12-13 12:33:12,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2022-12-13 12:33:12,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:33:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2022-12-13 12:33:21,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303682460] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:33:21,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:33:21,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 133 [2022-12-13 12:33:21,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802300067] [2022-12-13 12:33:21,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:33:21,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-12-13 12:33:21,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:21,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-12-13 12:33:21,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2252, Invalid=15304, Unknown=0, NotChecked=0, Total=17556 [2022-12-13 12:33:21,817 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 133 states, 133 states have (on average 1.0451127819548873) internal successors, (139), 69 states have internal predecessors, (139), 1 states have call successors, (2), 1 states have call predecessors, (2), 64 states have return successors, (64), 64 states have call predecessors, (64), 1 states have call successors, (64) [2022-12-13 12:36:40,664 WARN L233 SmtUtils]: Spent 1.64m on a formula simplification that was a NOOP. DAG size: 159 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:36:42,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 12:36:44,707 WARN L837 $PredicateComparison]: unable to prove that (and (not (= (mod (+ |c_id_#res| 29) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 17) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 28) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 23) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#res| 13) 4294967296))) (not (= 100 (mod (+ |c_id_#res| 2) 4294967296))) (not (= (mod (+ |c_id_#res| 3) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 7) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 5) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 27) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 1) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#res| 6) 4294967296))) (not (= 100 (mod (+ |c_id_#res| 26) 4294967296))) (not (= (mod (+ |c_id_#res| 18) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 16) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#res| 30) 4294967296))) (not (= (mod (+ |c_id_#res| 21) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 19) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 15) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 8) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#res| 22) 4294967296))) (not (= (mod |c_id_#res| 4294967296) 100)) (not (= (mod (+ |c_id_#res| 14) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 10) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 11) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 12) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 20) 4294967296) 100)) (not (= (mod (+ |c_id_#res| 24) 4294967296) 100)) (not (= 100 (mod (+ |c_id_#res| 4) 4294967296))) (not (= 100 (mod (+ |c_id_#res| 9) 4294967296))) (not (= (mod (+ |c_id_#res| 25) 4294967296) 100))) is different from false [2022-12-13 12:39:51,134 WARN L233 SmtUtils]: Spent 1.55m on a formula simplification that was a NOOP. DAG size: 154 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:42:50,955 WARN L233 SmtUtils]: Spent 1.51m on a formula simplification that was a NOOP. DAG size: 152 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:42:52,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []