./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ --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 3f8ee4f5181b3404c1367dbf131683f1e761cea6b176154f687b628466c991fe --- 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-dbf71c6-m [2022-10-17 10:26:45,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:26:45,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:26:45,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:26:45,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:26:45,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:26:45,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:26:45,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:26:45,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:26:45,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:26:45,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:26:45,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:26:45,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:26:45,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:26:45,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:26:45,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:26:45,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:26:45,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:26:45,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:26:45,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:26:45,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:26:45,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:26:45,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:26:45,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:26:45,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:26:45,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:26:45,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:26:45,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:26:45,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:26:45,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:26:45,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:26:45,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:26:45,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:26:45,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:26:45,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:26:45,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:26:45,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:26:45,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:26:45,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:26:45,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:26:45,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:26:45,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:26:45,810 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:26:45,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:26:45,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:26:45,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:26:45,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:26:45,812 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:26:45,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:26:45,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:26:45,814 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:26:45,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:26:45,814 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:26:45,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:26:45,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:26:45,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:26:45,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:26:45,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:26:45,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:26:45,816 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:26:45,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:26:45,816 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:26:45,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:26:45,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:26:45,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:26:45,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:26:45,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:26:45,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:26:45,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:26:45,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:26:45,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:26:45,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:26:45,835 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:26:45,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:26:45,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:26:45,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f8ee4f5181b3404c1367dbf131683f1e761cea6b176154f687b628466c991fe [2022-10-17 10:26:46,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:26:46,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:26:46,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:26:46,121 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:26:46,122 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:26:46,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c [2022-10-17 10:26:46,185 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/data/59ce0b764/565b1c3f37bb4602894191fdf6c4a159/FLAG19e45fefb [2022-10-17 10:26:46,579 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:26:46,579 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/sv-benchmarks/c/recursive-simple/id_i10_o10-2.c [2022-10-17 10:26:46,585 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/data/59ce0b764/565b1c3f37bb4602894191fdf6c4a159/FLAG19e45fefb [2022-10-17 10:26:46,973 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/data/59ce0b764/565b1c3f37bb4602894191fdf6c4a159 [2022-10-17 10:26:46,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:26:46,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:26:46,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:26:46,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:26:46,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:26:46,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:26:46" (1/1) ... [2022-10-17 10:26:46,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289fab1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:46, skipping insertion in model container [2022-10-17 10:26:46,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:26:46" (1/1) ... [2022-10-17 10:26:46,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:26:47,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:26:47,207 WARN L230 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_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/sv-benchmarks/c/recursive-simple/id_i10_o10-2.c[454,467] [2022-10-17 10:26:47,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:26:47,218 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:26:47,231 WARN L230 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_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/sv-benchmarks/c/recursive-simple/id_i10_o10-2.c[454,467] [2022-10-17 10:26:47,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:26:47,244 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:26:47,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:47 WrapperNode [2022-10-17 10:26:47,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:26:47,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:26:47,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:26:47,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:26:47,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:47" (1/1) ... [2022-10-17 10:26:47,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:47" (1/1) ... [2022-10-17 10:26:47,276 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-10-17 10:26:47,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:26:47,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:26:47,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:26:47,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:26:47,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:47" (1/1) ... [2022-10-17 10:26:47,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:47" (1/1) ... [2022-10-17 10:26:47,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:47" (1/1) ... [2022-10-17 10:26:47,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:47" (1/1) ... [2022-10-17 10:26:47,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:47" (1/1) ... [2022-10-17 10:26:47,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:47" (1/1) ... [2022-10-17 10:26:47,293 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:47" (1/1) ... [2022-10-17 10:26:47,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:47" (1/1) ... [2022-10-17 10:26:47,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:26:47,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:26:47,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:26:47,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:26:47,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:47" (1/1) ... [2022-10-17 10:26:47,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:26:47,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:47,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:47,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:26:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:26:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:26:47,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:26:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:26:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-10-17 10:26:47,378 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-10-17 10:26:47,443 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:26:47,446 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:26:47,573 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:26:47,580 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:26:47,580 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:26:47,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:26:47 BoogieIcfgContainer [2022-10-17 10:26:47,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:26:47,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:26:47,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:26:47,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:26:47,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:26:46" (1/3) ... [2022-10-17 10:26:47,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747366df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:26:47, skipping insertion in model container [2022-10-17 10:26:47,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:47" (2/3) ... [2022-10-17 10:26:47,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747366df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:26:47, skipping insertion in model container [2022-10-17 10:26:47,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:26:47" (3/3) ... [2022-10-17 10:26:47,593 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i10_o10-2.c [2022-10-17 10:26:47,616 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:26:47,616 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:26:47,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:26:47,681 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;@326449ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:26:47,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:26:47,686 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) [2022-10-17 10:26:47,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 10:26:47,695 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:26:47,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:47,697 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:26:47,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2022-10-17 10:26:47,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:47,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322101820] [2022-10-17 10:26:47,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:47,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:47,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:48,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:48,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322101820] [2022-10-17 10:26:48,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322101820] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:26:48,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:26:48,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:26:48,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449568751] [2022-10-17 10:26:48,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:26:48,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:26:48,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:48,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:26:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:26:48,153 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, 4 states have (on average 2.0) internal successors, (8), 5 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) [2022-10-17 10:26:48,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:26:48,258 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-10-17 10:26:48,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:26:48,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 [2022-10-17 10:26:48,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:26:48,275 INFO L225 Difference]: With dead ends: 25 [2022-10-17 10:26:48,275 INFO L226 Difference]: Without dead ends: 15 [2022-10-17 10:26:48,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:26:48,289 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:26:48,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 35 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:26:48,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-10-17 10:26:48,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-10-17 10:26:48,329 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) [2022-10-17 10:26:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-10-17 10:26:48,334 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2022-10-17 10:26:48,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:26:48,335 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-10-17 10:26:48,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2022-10-17 10:26:48,337 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-10-17 10:26:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 10:26:48,339 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:26:48,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:48,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:26:48,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:26:48,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:48,344 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2022-10-17 10:26:48,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:48,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096136472] [2022-10-17 10:26:48,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:48,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:48,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:48,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:48,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:26:48,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:48,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096136472] [2022-10-17 10:26:48,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096136472] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:48,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343791841] [2022-10-17 10:26:48,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:48,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:48,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:48,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:48,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:26:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:48,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:26:48,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:26:48,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:26:49,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343791841] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:49,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:49,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2022-10-17 10:26:49,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961130004] [2022-10-17 10:26:49,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:49,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:26:49,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:49,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:26:49,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:26:49,056 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:26:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:26:49,111 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-10-17 10:26:49,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:26:49,112 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 16 [2022-10-17 10:26:49,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:26:49,113 INFO L225 Difference]: With dead ends: 22 [2022-10-17 10:26:49,113 INFO L226 Difference]: Without dead ends: 18 [2022-10-17 10:26:49,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:26:49,116 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:26:49,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 28 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:26:49,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-10-17 10:26:49,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-10-17 10:26:49,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:26:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-10-17 10:26:49,123 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2022-10-17 10:26:49,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:26:49,124 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-10-17 10:26:49,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:26:49,125 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-10-17 10:26:49,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 10:26:49,126 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:26:49,126 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:49,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:49,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:49,343 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:26:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:49,344 INFO L85 PathProgramCache]: Analyzing trace with hash -41010676, now seen corresponding path program 2 times [2022-10-17 10:26:49,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:49,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022086938] [2022-10-17 10:26:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:49,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:49,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:49,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:49,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:26:49,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:49,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022086938] [2022-10-17 10:26:49,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022086938] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:49,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352622189] [2022-10-17 10:26:49,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:26:49,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:49,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:49,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:49,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:26:49,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:26:49,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:26:49,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:26:49,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:26:49,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:26:50,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352622189] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:50,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:50,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 14 [2022-10-17 10:26:50,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567126552] [2022-10-17 10:26:50,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:50,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:26:50,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:50,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:26:50,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:26:50,204 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2022-10-17 10:26:50,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:26:50,275 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-10-17 10:26:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:26:50,276 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) Word has length 22 [2022-10-17 10:26:50,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:26:50,278 INFO L225 Difference]: With dead ends: 25 [2022-10-17 10:26:50,278 INFO L226 Difference]: Without dead ends: 21 [2022-10-17 10:26:50,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:26:50,280 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:26:50,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 49 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:26:50,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-10-17 10:26:50,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-10-17 10:26:50,286 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) [2022-10-17 10:26:50,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-10-17 10:26:50,287 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2022-10-17 10:26:50,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:26:50,288 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-10-17 10:26:50,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2022-10-17 10:26:50,288 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-10-17 10:26:50,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-17 10:26:50,289 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:26:50,290 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:50,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:50,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:50,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:26:50,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:50,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 3 times [2022-10-17 10:26:50,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:50,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230640718] [2022-10-17 10:26:50,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:50,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:50,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:50,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:50,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:50,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:26:50,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:50,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230640718] [2022-10-17 10:26:50,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230640718] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:50,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586795261] [2022-10-17 10:26:50,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:26:50,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:50,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:50,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:50,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:26:50,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-17 10:26:50,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:26:50,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:26:50,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 10:26:50,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 10:26:51,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586795261] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:51,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:51,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 16 [2022-10-17 10:26:51,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542468469] [2022-10-17 10:26:51,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:51,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 10:26:51,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:51,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:26:51,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:26:51,505 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) [2022-10-17 10:26:51,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:26:51,573 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2022-10-17 10:26:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:26:51,575 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) Word has length 28 [2022-10-17 10:26:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:26:51,576 INFO L225 Difference]: With dead ends: 28 [2022-10-17 10:26:51,576 INFO L226 Difference]: Without dead ends: 24 [2022-10-17 10:26:51,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2022-10-17 10:26:51,578 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:26:51,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 59 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:26:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-10-17 10:26:51,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-10-17 10:26:51,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-17 10:26:51,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-10-17 10:26:51,594 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 28 [2022-10-17 10:26:51,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:26:51,594 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-10-17 10:26:51,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) [2022-10-17 10:26:51,595 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-10-17 10:26:51,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 10:26:51,598 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:26:51,599 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:51,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:51,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:51,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:26:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:51,812 INFO L85 PathProgramCache]: Analyzing trace with hash 371264716, now seen corresponding path program 4 times [2022-10-17 10:26:51,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:51,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296069459] [2022-10-17 10:26:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:51,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:51,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:51,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:52,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:52,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:52,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:52,202 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:26:52,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:52,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296069459] [2022-10-17 10:26:52,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296069459] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:52,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295439971] [2022-10-17 10:26:52,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 10:26:52,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:52,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:52,214 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:52,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:26:52,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 10:26:52,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:26:52,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 10:26:52,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 10:26:52,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-17 10:26:53,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295439971] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:53,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:53,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 13] total 18 [2022-10-17 10:26:53,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817894631] [2022-10-17 10:26:53,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:53,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-17 10:26:53,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:53,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 10:26:53,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:26:53,068 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 18 states, 16 states have (on average 2.0625) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2022-10-17 10:26:53,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:26:53,164 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-10-17 10:26:53,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:26:53,165 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) Word has length 34 [2022-10-17 10:26:53,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:26:53,166 INFO L225 Difference]: With dead ends: 31 [2022-10-17 10:26:53,166 INFO L226 Difference]: Without dead ends: 27 [2022-10-17 10:26:53,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2022-10-17 10:26:53,168 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 103 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:26:53,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 49 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:26:53,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-10-17 10:26:53,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-10-17 10:26:53,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-17 10:26:53,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-10-17 10:26:53,176 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 34 [2022-10-17 10:26:53,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:26:53,176 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-10-17 10:26:53,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2022-10-17 10:26:53,177 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-10-17 10:26:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-17 10:26:53,178 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:26:53,179 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:53,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:53,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:53,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:26:53,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:53,403 INFO L85 PathProgramCache]: Analyzing trace with hash -886339242, now seen corresponding path program 5 times [2022-10-17 10:26:53,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:53,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423314002] [2022-10-17 10:26:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:53,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:53,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:53,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:53,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:53,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:53,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:53,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:53,788 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-10-17 10:26:53,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:53,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423314002] [2022-10-17 10:26:53,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423314002] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:53,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976002597] [2022-10-17 10:26:53,789 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-17 10:26:53,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:53,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:53,791 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:53,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:26:53,859 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-10-17 10:26:53,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:26:53,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-17 10:26:53,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:53,956 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-17 10:26:53,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 10:26:55,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976002597] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:55,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:55,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 15] total 20 [2022-10-17 10:26:55,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166588985] [2022-10-17 10:26:55,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:55,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-17 10:26:55,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:55,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-17 10:26:55,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-10-17 10:26:55,055 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 20 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) [2022-10-17 10:26:55,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:26:55,151 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2022-10-17 10:26:55,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:26:55,152 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) Word has length 40 [2022-10-17 10:26:55,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:26:55,154 INFO L225 Difference]: With dead ends: 34 [2022-10-17 10:26:55,154 INFO L226 Difference]: Without dead ends: 30 [2022-10-17 10:26:55,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2022-10-17 10:26:55,158 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:26:55,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 65 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:26:55,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-10-17 10:26:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-10-17 10:26:55,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:26:55,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-10-17 10:26:55,182 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 40 [2022-10-17 10:26:55,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:26:55,183 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-10-17 10:26:55,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) [2022-10-17 10:26:55,183 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-10-17 10:26:55,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-17 10:26:55,184 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:26:55,185 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:55,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:55,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:55,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:26:55,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:55,409 INFO L85 PathProgramCache]: Analyzing trace with hash -918712436, now seen corresponding path program 6 times [2022-10-17 10:26:55,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:55,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169239840] [2022-10-17 10:26:55,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:55,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:55,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:55,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:55,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:55,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:55,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:55,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:55,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-17 10:26:55,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:55,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169239840] [2022-10-17 10:26:55,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169239840] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:55,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637606934] [2022-10-17 10:26:55,919 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-17 10:26:55,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:55,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:55,923 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:55,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:26:56,015 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-10-17 10:26:56,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:26:56,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 10:26:56,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-17 10:26:56,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:26:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-17 10:26:57,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637606934] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:26:57,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:26:57,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 17] total 22 [2022-10-17 10:26:57,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301623858] [2022-10-17 10:26:57,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:26:57,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-17 10:26:57,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:57,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-17 10:26:57,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2022-10-17 10:26:57,862 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 22 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2022-10-17 10:26:57,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:26:57,964 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2022-10-17 10:26:57,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:26:57,965 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) Word has length 46 [2022-10-17 10:26:57,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:26:57,967 INFO L225 Difference]: With dead ends: 37 [2022-10-17 10:26:57,967 INFO L226 Difference]: Without dead ends: 33 [2022-10-17 10:26:57,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 87 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2022-10-17 10:26:57,969 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 52 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:26:57,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 77 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:26:57,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-10-17 10:26:57,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-10-17 10:26:57,974 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) [2022-10-17 10:26:57,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-10-17 10:26:57,976 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 46 [2022-10-17 10:26:57,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:26:57,976 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-10-17 10:26:57,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2022-10-17 10:26:57,977 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-10-17 10:26:57,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 10:26:57,978 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:26:57,978 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:26:58,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:58,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-10-17 10:26:58,207 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:26:58,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 7 times [2022-10-17 10:26:58,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:58,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220077346] [2022-10-17 10:26:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:58,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:58,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:58,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:58,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:58,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:58,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:58,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:58,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:58,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:26:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-10-17 10:26:58,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:58,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220077346] [2022-10-17 10:26:58,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220077346] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:26:58,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476389250] [2022-10-17 10:26:58,666 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-17 10:26:58,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:26:58,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:58,671 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:26:58,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 10:26:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:58,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-17 10:26:58,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:26:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-10-17 10:26:58,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:27:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-17 10:27:01,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476389250] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:27:01,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:27:01,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 19] total 24 [2022-10-17 10:27:01,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766121333] [2022-10-17 10:27:01,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:27:01,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-17 10:27:01,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:27:01,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-17 10:27:01,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2022-10-17 10:27:01,202 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 24 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 24 states have internal predecessors, (45), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) [2022-10-17 10:27:01,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:27:01,348 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2022-10-17 10:27:01,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:27:01,349 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 24 states have internal predecessors, (45), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) Word has length 52 [2022-10-17 10:27:01,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:27:01,353 INFO L225 Difference]: With dead ends: 40 [2022-10-17 10:27:01,353 INFO L226 Difference]: Without dead ends: 36 [2022-10-17 10:27:01,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 99 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=322, Invalid=670, Unknown=0, NotChecked=0, Total=992 [2022-10-17 10:27:01,356 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 75 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:27:01,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 89 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:27:01,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-17 10:27:01,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-10-17 10:27:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (10), 9 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-17 10:27:01,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-10-17 10:27:01,368 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 52 [2022-10-17 10:27:01,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:27:01,368 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-10-17 10:27:01,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 24 states have internal predecessors, (45), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) [2022-10-17 10:27:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-10-17 10:27:01,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-17 10:27:01,375 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:27:01,375 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:27:01,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:27:01,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-10-17 10:27:01,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:27:01,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:27:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash -960511412, now seen corresponding path program 8 times [2022-10-17 10:27:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:27:01,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229321687] [2022-10-17 10:27:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:27:01,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:27:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:01,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:02,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:02,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:02,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:02,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:02,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-10-17 10:27:02,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:27:02,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229321687] [2022-10-17 10:27:02,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229321687] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:27:02,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661321461] [2022-10-17 10:27:02,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:27:02,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:27:02,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:27:02,328 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:27:02,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 10:27:02,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:27:02,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:27:02,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:27:02,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:27:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-10-17 10:27:02,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:27:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-10-17 10:27:05,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661321461] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:27:05,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:27:05,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 21] total 26 [2022-10-17 10:27:05,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420605173] [2022-10-17 10:27:05,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:27:05,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-17 10:27:05,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:27:05,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-17 10:27:05,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2022-10-17 10:27:05,864 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 26 states have internal predecessors, (49), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) [2022-10-17 10:27:06,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:27:06,025 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2022-10-17 10:27:06,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:27:06,026 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 26 states have internal predecessors, (49), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) Word has length 58 [2022-10-17 10:27:06,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:27:06,033 INFO L225 Difference]: With dead ends: 43 [2022-10-17 10:27:06,033 INFO L226 Difference]: Without dead ends: 39 [2022-10-17 10:27:06,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 111 SyntacticMatches, 9 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=387, Invalid=803, Unknown=0, NotChecked=0, Total=1190 [2022-10-17 10:27:06,038 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:27:06,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 94 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:27:06,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-10-17 10:27:06,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-10-17 10:27:06,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-17 10:27:06,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2022-10-17 10:27:06,054 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 58 [2022-10-17 10:27:06,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:27:06,054 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2022-10-17 10:27:06,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 26 states have internal predecessors, (49), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) [2022-10-17 10:27:06,055 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2022-10-17 10:27:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-17 10:27:06,056 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:27:06,056 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:27:06,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-10-17 10:27:06,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:27:06,283 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:27:06,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:27:06,284 INFO L85 PathProgramCache]: Analyzing trace with hash -366706730, now seen corresponding path program 9 times [2022-10-17 10:27:06,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:27:06,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498768131] [2022-10-17 10:27:06,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:27:06,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:27:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:06,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:06,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:06,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:06,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:06,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:06,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:06,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:06,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:06,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-10-17 10:27:06,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:27:06,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498768131] [2022-10-17 10:27:06,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498768131] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:27:06,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294371718] [2022-10-17 10:27:06,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:27:06,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:27:06,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:27:06,999 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:27:07,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 10:27:07,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-10-17 10:27:07,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:27:07,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 22 conjunts are in the unsatisfiable core [2022-10-17 10:27:07,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:27:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-10-17 10:27:07,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:27:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-10-17 10:27:10,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294371718] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:27:10,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:27:10,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 23] total 27 [2022-10-17 10:27:10,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381074954] [2022-10-17 10:27:10,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:27:10,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-17 10:27:10,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:27:10,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-17 10:27:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=498, Unknown=0, NotChecked=0, Total=702 [2022-10-17 10:27:10,838 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 27 states, 26 states have (on average 2.0) internal successors, (52), 27 states have internal predecessors, (52), 12 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 10 states have call predecessors, (28), 12 states have call successors, (28) [2022-10-17 10:27:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:27:11,000 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2022-10-17 10:27:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:27:11,001 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.0) internal successors, (52), 27 states have internal predecessors, (52), 12 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 10 states have call predecessors, (28), 12 states have call successors, (28) Word has length 64 [2022-10-17 10:27:11,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:27:11,002 INFO L225 Difference]: With dead ends: 46 [2022-10-17 10:27:11,002 INFO L226 Difference]: Without dead ends: 42 [2022-10-17 10:27:11,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 123 SyntacticMatches, 11 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=455, Invalid=877, Unknown=0, NotChecked=0, Total=1332 [2022-10-17 10:27:11,004 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 92 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:27:11,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 91 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:27:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-17 10:27:11,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-10-17 10:27:11,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (12), 11 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:27:11,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2022-10-17 10:27:11,010 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 64 [2022-10-17 10:27:11,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:27:11,010 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2022-10-17 10:27:11,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.0) internal successors, (52), 27 states have internal predecessors, (52), 12 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 10 states have call predecessors, (28), 12 states have call successors, (28) [2022-10-17 10:27:11,011 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2022-10-17 10:27:11,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-17 10:27:11,012 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:27:11,012 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:27:11,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:27:11,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 10:27:11,239 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:27:11,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:27:11,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1719425780, now seen corresponding path program 10 times [2022-10-17 10:27:11,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:27:11,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854852294] [2022-10-17 10:27:11,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:27:11,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:27:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:11,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:11,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:11,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:11,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:12,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:12,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:12,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:12,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:12,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 10 proven. 155 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-10-17 10:27:12,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:27:12,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854852294] [2022-10-17 10:27:12,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854852294] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:27:12,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695544987] [2022-10-17 10:27:12,411 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 10:27:12,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:27:12,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:27:12,412 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:27:12,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-17 10:27:12,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 10:27:12,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:27:12,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-17 10:27:12,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:27:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-10-17 10:27:12,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:27:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-10-17 10:27:13,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695544987] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:27:13,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:27:13,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 27 [2022-10-17 10:27:13,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261028421] [2022-10-17 10:27:13,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:27:13,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-17 10:27:13,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:27:13,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-17 10:27:13,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702 [2022-10-17 10:27:13,605 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 16 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 11 states have call predecessors, (12), 1 states have call successors, (12) [2022-10-17 10:27:14,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:27:14,221 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2022-10-17 10:27:14,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-17 10:27:14,221 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 16 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 11 states have call predecessors, (12), 1 states have call successors, (12) Word has length 70 [2022-10-17 10:27:14,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:27:14,222 INFO L225 Difference]: With dead ends: 49 [2022-10-17 10:27:14,223 INFO L226 Difference]: Without dead ends: 45 [2022-10-17 10:27:14,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 155 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2022-10-17 10:27:14,225 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:27:14,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 413 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:27:14,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-10-17 10:27:14,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-10-17 10:27:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:27:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2022-10-17 10:27:14,231 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 70 [2022-10-17 10:27:14,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:27:14,232 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2022-10-17 10:27:14,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 16 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 11 states have call predecessors, (12), 1 states have call successors, (12) [2022-10-17 10:27:14,232 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2022-10-17 10:27:14,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-17 10:27:14,233 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:27:14,234 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:27:14,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:27:14,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-17 10:27:14,459 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:27:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:27:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1354232598, now seen corresponding path program 11 times [2022-10-17 10:27:14,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:27:14,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279952932] [2022-10-17 10:27:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:27:14,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:27:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:14,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:14,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:14,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:15,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:15,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:15,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:15,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:15,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:15,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:15,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 165 proven. 33 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-10-17 10:27:15,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:27:15,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279952932] [2022-10-17 10:27:15,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279952932] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:27:15,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27270911] [2022-10-17 10:27:15,342 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-17 10:27:15,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:27:15,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:27:15,344 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:27:15,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-17 10:27:15,578 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-10-17 10:27:15,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:27:15,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-17 10:27:15,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:27:15,719 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-10-17 10:27:15,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:27:15,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27270911] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:27:15,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:27:15,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [17] total 19 [2022-10-17 10:27:15,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641092377] [2022-10-17 10:27:15,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:27:15,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 10:27:15,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:27:15,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:27:15,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:27:15,722 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:27:15,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:27:15,928 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2022-10-17 10:27:15,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:27:15,929 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) Word has length 76 [2022-10-17 10:27:15,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:27:15,930 INFO L225 Difference]: With dead ends: 45 [2022-10-17 10:27:15,930 INFO L226 Difference]: Without dead ends: 0 [2022-10-17 10:27:15,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=285, Invalid=645, Unknown=0, NotChecked=0, Total=930 [2022-10-17 10:27:15,931 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:27:15,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 103 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:27:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-17 10:27:15,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-17 10:27:15,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:27:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 10:27:15,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2022-10-17 10:27:15,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:27:15,933 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 10:27:15,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-17 10:27:15,933 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-17 10:27:15,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 10:27:15,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 10:27:15,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:27:16,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:27:16,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-17 10:27:16,155 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-17 10:27:16,155 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-10-17 10:27:16,155 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-17 10:27:16,155 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-10-17 10:27:16,156 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2022-10-17 10:27:16,156 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-10-17 10:27:16,156 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2022-10-17 10:27:16,157 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~input~0#1| 10) (<= 10 |ULTIMATE.start_main_~input~0#1|)) [2022-10-17 10:27:16,157 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-10-17 10:27:16,157 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 17) no Hoare annotation was computed. [2022-10-17 10:27:16,157 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2022-10-17 10:27:16,157 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2022-10-17 10:27:16,158 INFO L895 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (= |id_#in~x| id_~x) [2022-10-17 10:27:16,158 INFO L902 garLoopResultBuilder]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2022-10-17 10:27:16,158 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-10-17 10:27:16,158 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2022-10-17 10:27:16,161 INFO L444 BasicCegarLoop]: Path program histogram: [11, 1] [2022-10-17 10:27:16,164 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:27:16,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:27:16 BoogieIcfgContainer [2022-10-17 10:27:16,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:27:16,171 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:27:16,171 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:27:16,171 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:27:16,172 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:26:47" (3/4) ... [2022-10-17 10:27:16,175 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 10:27:16,183 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2022-10-17 10:27:16,189 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-10-17 10:27:16,190 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-10-17 10:27:16,190 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-10-17 10:27:16,190 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 10:27:16,228 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:27:16,228 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:27:16,229 INFO L158 Benchmark]: Toolchain (without parser) took 29252.09ms. Allocated memory was 115.3MB in the beginning and 323.0MB in the end (delta: 207.6MB). Free memory was 71.5MB in the beginning and 283.9MB in the end (delta: -212.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:27:16,229 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory was 88.0MB in the beginning and 87.9MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:27:16,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.10ms. Allocated memory is still 115.3MB. Free memory was 71.2MB in the beginning and 91.6MB in the end (delta: -20.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 10:27:16,230 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.15ms. Allocated memory is still 115.3MB. Free memory was 91.6MB in the beginning and 90.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:27:16,231 INFO L158 Benchmark]: Boogie Preprocessor took 18.33ms. Allocated memory is still 115.3MB. Free memory was 90.2MB in the beginning and 89.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:27:16,232 INFO L158 Benchmark]: RCFGBuilder took 286.58ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 80.1MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:27:16,232 INFO L158 Benchmark]: TraceAbstraction took 28584.61ms. Allocated memory was 115.3MB in the beginning and 323.0MB in the end (delta: 207.6MB). Free memory was 79.7MB in the beginning and 286.0MB in the end (delta: -206.3MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2022-10-17 10:27:16,233 INFO L158 Benchmark]: Witness Printer took 57.89ms. Allocated memory is still 323.0MB. Free memory was 286.0MB in the beginning and 283.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:27:16,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory was 88.0MB in the beginning and 87.9MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.10ms. Allocated memory is still 115.3MB. Free memory was 71.2MB in the beginning and 91.6MB in the end (delta: -20.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.15ms. Allocated memory is still 115.3MB. Free memory was 91.6MB in the beginning and 90.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.33ms. Allocated memory is still 115.3MB. Free memory was 90.2MB in the beginning and 89.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 286.58ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 80.1MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 28584.61ms. Allocated memory was 115.3MB in the beginning and 323.0MB in the end (delta: 207.6MB). Free memory was 79.7MB in the beginning and 286.0MB in the end (delta: -206.3MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Witness Printer took 57.89ms. Allocated memory is still 323.0MB. Free memory was 286.0MB in the beginning and 283.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 28.5s, OverallIterations: 12, TraceHistogramMax: 12, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 603 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 515 mSDsluCounter, 1152 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1003 mSDsCounter, 188 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1135 IncrementalHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 188 mSolverCounterUnsat, 149 mSDtfsCounter, 1135 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1284 GetRequests, 930 SyntacticMatches, 60 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2276 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=11, InterpolantAutomatonStates: 137, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 21.9s InterpolantComputationTime, 1022 NumberOfCodeBlocks, 1016 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 1419 ConstructedInterpolants, 0 QuantifiedInterpolants, 4260 SizeOfPredicates, 67 NumberOfNonLiveVariables, 1387 ConjunctsInSsa, 199 ConjunctsInUnsatCore, 33 InterpolantComputations, 2 PerfectInterpolantSequences, 2200/4378 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-17 10:27:16,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f4b7f65-98b8-4021-a3c9-e2b9e528aa93/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE