./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d32_e0.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d32_e0.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc --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 64bit --witnessprinter.graph.data.programhash 5eb28cc7575e168a1cfc976b73d33f741d269483737674360dc29ea051121d5b --- 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-5e519f3 [2022-11-02 20:55:00,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:55:00,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:55:00,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:55:00,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:55:00,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:55:00,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:55:00,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:55:00,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:55:00,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:55:00,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:55:00,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:55:00,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:55:00,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:55:00,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:55:00,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:55:00,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:55:00,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:55:00,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:55:00,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:55:00,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:55:00,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:55:00,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:55:00,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:55:00,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:55:00,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:55:00,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:55:00,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:55:00,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:55:00,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:55:00,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:55:00,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:55:00,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:55:00,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:55:00,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:55:00,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:55:00,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:55:00,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:55:00,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:55:00,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:55:00,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:55:00,206 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:55:00,229 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:55:00,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:55:00,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:55:00,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:55:00,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:55:00,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:55:00,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:55:00,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:55:00,232 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:55:00,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:55:00,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:55:00,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:55:00,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:55:00,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:55:00,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:55:00,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:55:00,234 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:55:00,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:55:00,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:55:00,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:55:00,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:55:00,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:00,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:55:00,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:55:00,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:55:00,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:55:00,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:55:00,236 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:55:00,236 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:55:00,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:55:00,237 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_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eb28cc7575e168a1cfc976b73d33f741d269483737674360dc29ea051121d5b [2022-11-02 20:55:00,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:55:00,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:55:00,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:55:00,500 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:55:00,501 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:55:00,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d32_e0.c [2022-11-02 20:55:00,588 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/data/83fe8ad03/540f8e18fa544837b841975236b8e095/FLAG54c09a20b [2022-11-02 20:55:01,235 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:55:01,235 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d32_e0.c [2022-11-02 20:55:01,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/data/83fe8ad03/540f8e18fa544837b841975236b8e095/FLAG54c09a20b [2022-11-02 20:55:01,478 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/data/83fe8ad03/540f8e18fa544837b841975236b8e095 [2022-11-02 20:55:01,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:55:01,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:55:01,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:01,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:55:01,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:55:01,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:01" (1/1) ... [2022-11-02 20:55:01,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c9154c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:01, skipping insertion in model container [2022-11-02 20:55:01,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:01" (1/1) ... [2022-11-02 20:55:01,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:55:01,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:55:01,818 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_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d32_e0.c[1116,1129] [2022-11-02 20:55:02,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:02,204 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:55:02,216 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_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d32_e0.c[1116,1129] [2022-11-02 20:55:02,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:02,321 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:55:02,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:02 WrapperNode [2022-11-02 20:55:02,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:02,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:02,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:55:02,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:55:02,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:02" (1/1) ... [2022-11-02 20:55:02,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:02" (1/1) ... [2022-11-02 20:55:02,517 INFO L138 Inliner]: procedures = 11, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1864 [2022-11-02 20:55:02,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:02,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:55:02,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:55:02,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:55:02,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:02" (1/1) ... [2022-11-02 20:55:02,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:02" (1/1) ... [2022-11-02 20:55:02,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:02" (1/1) ... [2022-11-02 20:55:02,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:02" (1/1) ... [2022-11-02 20:55:02,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:02" (1/1) ... [2022-11-02 20:55:02,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:02" (1/1) ... [2022-11-02 20:55:02,626 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:02" (1/1) ... [2022-11-02 20:55:02,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:02" (1/1) ... [2022-11-02 20:55:02,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:55:02,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:55:02,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:55:02,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:55:02,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:02" (1/1) ... [2022-11-02 20:55:02,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:02,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:02,710 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:55:02,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:55:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:55:02,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:55:02,757 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:55:02,758 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:55:03,207 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:55:03,209 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:55:06,464 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:55:06,481 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:55:06,481 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:55:06,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:06 BoogieIcfgContainer [2022-11-02 20:55:06,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:55:06,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:55:06,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:55:06,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:55:06,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:55:01" (1/3) ... [2022-11-02 20:55:06,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c28b080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:06, skipping insertion in model container [2022-11-02 20:55:06,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:02" (2/3) ... [2022-11-02 20:55:06,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c28b080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:06, skipping insertion in model container [2022-11-02 20:55:06,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:06" (3/3) ... [2022-11-02 20:55:06,495 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w8_d32_e0.c [2022-11-02 20:55:06,514 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:55:06,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:55:06,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:55:06,576 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;@72acf7cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:55:06,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:55:06,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 245 states have (on average 1.489795918367347) internal successors, (365), 246 states have internal predecessors, (365), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:55:06,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 20:55:06,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:06,608 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:06,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:06,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1491409808, now seen corresponding path program 1 times [2022-11-02 20:55:06,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:06,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104000065] [2022-11-02 20:55:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:06,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:07,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:55:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:07,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:55:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:07,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:55:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:55:07,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:07,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104000065] [2022-11-02 20:55:07,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104000065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:07,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:07,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:55:07,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931197167] [2022-11-02 20:55:07,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:07,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:55:07,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:07,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:55:07,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:55:07,566 INFO L87 Difference]: Start difference. First operand has 251 states, 245 states have (on average 1.489795918367347) internal successors, (365), 246 states have internal predecessors, (365), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:55:07,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:07,621 INFO L93 Difference]: Finished difference Result 496 states and 740 transitions. [2022-11-02 20:55:07,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:55:07,624 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 95 [2022-11-02 20:55:07,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:07,635 INFO L225 Difference]: With dead ends: 496 [2022-11-02 20:55:07,636 INFO L226 Difference]: Without dead ends: 247 [2022-11-02 20:55:07,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:55:07,644 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:07,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:55:07,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-02 20:55:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2022-11-02 20:55:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 242 states have internal predecessors, (358), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:55:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 364 transitions. [2022-11-02 20:55:07,725 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 364 transitions. Word has length 95 [2022-11-02 20:55:07,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:07,726 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 364 transitions. [2022-11-02 20:55:07,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:55:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 364 transitions. [2022-11-02 20:55:07,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 20:55:07,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:07,730 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:07,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:55:07,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:07,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:07,732 INFO L85 PathProgramCache]: Analyzing trace with hash -654443862, now seen corresponding path program 1 times [2022-11-02 20:55:07,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:07,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059736839] [2022-11-02 20:55:07,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:07,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:16,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:55:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:16,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:55:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:16,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:55:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:55:16,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:16,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059736839] [2022-11-02 20:55:16,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059736839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:16,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:16,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:55:16,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580932737] [2022-11-02 20:55:16,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:16,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:55:16,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:16,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:55:16,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:55:16,328 INFO L87 Difference]: Start difference. First operand 247 states and 364 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:55:16,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:16,684 INFO L93 Difference]: Finished difference Result 640 states and 949 transitions. [2022-11-02 20:55:16,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:55:16,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 95 [2022-11-02 20:55:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:16,695 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:55:16,695 INFO L226 Difference]: Without dead ends: 638 [2022-11-02 20:55:16,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:55:16,703 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 2365 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2365 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:16,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2365 Valid, 1571 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:55:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-11-02 20:55:16,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 319. [2022-11-02 20:55:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 314 states have (on average 1.480891719745223) internal successors, (465), 314 states have internal predecessors, (465), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:55:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 471 transitions. [2022-11-02 20:55:16,763 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 471 transitions. Word has length 95 [2022-11-02 20:55:16,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:16,765 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 471 transitions. [2022-11-02 20:55:16,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:55:16,768 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 471 transitions. [2022-11-02 20:55:16,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 20:55:16,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:16,774 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:16,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:55:16,775 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash 232778984, now seen corresponding path program 1 times [2022-11-02 20:55:16,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:16,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216370736] [2022-11-02 20:55:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:16,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:17,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:55:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:17,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:55:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:55:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:55:17,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:17,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216370736] [2022-11-02 20:55:17,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216370736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:17,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:17,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:55:17,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205049309] [2022-11-02 20:55:17,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:17,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:55:17,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:17,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:55:17,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:55:17,764 INFO L87 Difference]: Start difference. First operand 319 states and 471 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:55:18,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:18,688 INFO L93 Difference]: Finished difference Result 882 states and 1307 transitions. [2022-11-02 20:55:18,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:55:18,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 95 [2022-11-02 20:55:18,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:18,692 INFO L225 Difference]: With dead ends: 882 [2022-11-02 20:55:18,692 INFO L226 Difference]: Without dead ends: 565 [2022-11-02 20:55:18,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:55:18,697 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 695 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:18,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1078 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:55:18,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-02 20:55:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 327. [2022-11-02 20:55:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 319 states have (on average 1.4733542319749215) internal successors, (470), 319 states have internal predecessors, (470), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:55:18,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 482 transitions. [2022-11-02 20:55:18,725 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 482 transitions. Word has length 95 [2022-11-02 20:55:18,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:18,725 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 482 transitions. [2022-11-02 20:55:18,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:55:18,726 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 482 transitions. [2022-11-02 20:55:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:55:18,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:18,741 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:18,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:55:18,742 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:18,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash -788107687, now seen corresponding path program 1 times [2022-11-02 20:55:18,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:18,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634914390] [2022-11-02 20:55:18,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:18,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:22,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:55:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:22,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:55:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:22,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:55:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:22,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:55:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:22,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:55:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:22,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:55:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:55:22,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:22,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634914390] [2022-11-02 20:55:22,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634914390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:55:22,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879743979] [2022-11-02 20:55:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:22,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:22,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:22,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:55:22,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:55:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:23,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 3719 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:55:23,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:55:24,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:24,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879743979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:24,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:55:24,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:55:24,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865938634] [2022-11-02 20:55:24,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:24,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:55:24,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:24,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:55:24,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:55:24,176 INFO L87 Difference]: Start difference. First operand 327 states and 482 transitions. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:55:24,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:24,558 INFO L93 Difference]: Finished difference Result 1407 states and 2084 transitions. [2022-11-02 20:55:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:55:24,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:55:24,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:24,563 INFO L225 Difference]: With dead ends: 1407 [2022-11-02 20:55:24,563 INFO L226 Difference]: Without dead ends: 1090 [2022-11-02 20:55:24,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:55:24,565 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 1649 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:24,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 1420 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:55:24,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-11-02 20:55:24,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 475. [2022-11-02 20:55:24,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 467 states have (on average 1.4775160599571735) internal successors, (690), 467 states have internal predecessors, (690), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:55:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 702 transitions. [2022-11-02 20:55:24,591 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 702 transitions. Word has length 346 [2022-11-02 20:55:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:24,593 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 702 transitions. [2022-11-02 20:55:24,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:55:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 702 transitions. [2022-11-02 20:55:24,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:55:24,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:24,601 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:24,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:24,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:24,815 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:24,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:24,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1214004055, now seen corresponding path program 1 times [2022-11-02 20:55:24,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:24,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474500564] [2022-11-02 20:55:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:24,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:28,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:55:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:28,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:55:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:28,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:55:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:28,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:55:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:28,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:55:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:28,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:55:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:55:28,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:28,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474500564] [2022-11-02 20:55:28,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474500564] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:55:28,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470591859] [2022-11-02 20:55:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:28,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:28,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:28,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:55:28,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:55:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:29,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 3718 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:55:29,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:55:29,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:29,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470591859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:29,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:55:29,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:55:29,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703870064] [2022-11-02 20:55:29,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:29,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:55:29,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:29,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:55:29,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:55:29,930 INFO L87 Difference]: Start difference. First operand 475 states and 702 transitions. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:55:30,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:30,330 INFO L93 Difference]: Finished difference Result 1587 states and 2350 transitions. [2022-11-02 20:55:30,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:55:30,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:55:30,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:30,335 INFO L225 Difference]: With dead ends: 1587 [2022-11-02 20:55:30,336 INFO L226 Difference]: Without dead ends: 1122 [2022-11-02 20:55:30,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:55:30,338 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1614 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:30,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 1460 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:55:30,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-11-02 20:55:30,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 507. [2022-11-02 20:55:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 499 states have (on average 1.4769539078156313) internal successors, (737), 499 states have internal predecessors, (737), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:55:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 749 transitions. [2022-11-02 20:55:30,359 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 749 transitions. Word has length 346 [2022-11-02 20:55:30,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:30,360 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 749 transitions. [2022-11-02 20:55:30,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:55:30,361 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 749 transitions. [2022-11-02 20:55:30,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:55:30,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:30,368 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:30,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:30,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:30,585 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:30,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:30,586 INFO L85 PathProgramCache]: Analyzing trace with hash 968196181, now seen corresponding path program 1 times [2022-11-02 20:55:30,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:30,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612639373] [2022-11-02 20:55:30,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:30,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:53,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:55:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:53,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:55:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:53,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:55:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:53,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:55:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:53,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:55:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:53,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:55:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:55:53,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:53,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612639373] [2022-11-02 20:55:53,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612639373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:53,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:53,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:55:53,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720954931] [2022-11-02 20:55:53,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:53,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:55:53,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:53,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:55:53,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:55:53,490 INFO L87 Difference]: Start difference. First operand 507 states and 749 transitions. Second operand has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:55:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:56,315 INFO L93 Difference]: Finished difference Result 1782 states and 2635 transitions. [2022-11-02 20:55:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:55:56,316 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:55:56,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:56,322 INFO L225 Difference]: With dead ends: 1782 [2022-11-02 20:55:56,323 INFO L226 Difference]: Without dead ends: 1285 [2022-11-02 20:55:56,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:55:56,325 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 3215 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3215 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:56,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3215 Valid, 2111 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 20:55:56,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2022-11-02 20:55:56,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 573. [2022-11-02 20:55:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 565 states have (on average 1.4743362831858406) internal successors, (833), 565 states have internal predecessors, (833), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:55:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 845 transitions. [2022-11-02 20:55:56,354 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 845 transitions. Word has length 346 [2022-11-02 20:55:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:56,355 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 845 transitions. [2022-11-02 20:55:56,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:55:56,356 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 845 transitions. [2022-11-02 20:55:56,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:55:56,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:56,364 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:56,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:55:56,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:56,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:56,366 INFO L85 PathProgramCache]: Analyzing trace with hash -789430957, now seen corresponding path program 1 times [2022-11-02 20:55:56,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:56,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049141955] [2022-11-02 20:55:56,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:56,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:59,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:55:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:59,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:55:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:59,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:55:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:59,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:55:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:59,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:55:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:59,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:55:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:55:59,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:59,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049141955] [2022-11-02 20:55:59,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049141955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:55:59,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872548635] [2022-11-02 20:55:59,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:59,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:59,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:59,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:55:59,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:56:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:00,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 3716 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:00,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:56:01,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:01,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872548635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:01,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:56:01,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:56:01,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009550145] [2022-11-02 20:56:01,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:01,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:01,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:01,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:01,144 INFO L87 Difference]: Start difference. First operand 573 states and 845 transitions. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:56:01,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:01,544 INFO L93 Difference]: Finished difference Result 1881 states and 2779 transitions. [2022-11-02 20:56:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:01,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:56:01,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:01,551 INFO L225 Difference]: With dead ends: 1881 [2022-11-02 20:56:01,551 INFO L226 Difference]: Without dead ends: 1318 [2022-11-02 20:56:01,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:56:01,555 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1553 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:01,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 1533 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:56:01,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-11-02 20:56:01,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 637. [2022-11-02 20:56:01,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 629 states have (on average 1.4753577106518283) internal successors, (928), 629 states have internal predecessors, (928), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:56:01,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 940 transitions. [2022-11-02 20:56:01,583 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 940 transitions. Word has length 346 [2022-11-02 20:56:01,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:01,584 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 940 transitions. [2022-11-02 20:56:01,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:56:01,585 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 940 transitions. [2022-11-02 20:56:01,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:56:01,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:01,591 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:01,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:01,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:56:01,808 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:01,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:01,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1175293359, now seen corresponding path program 1 times [2022-11-02 20:56:01,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:01,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261617086] [2022-11-02 20:56:01,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:01,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:03,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:56:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:03,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:56:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:03,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:56:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:03,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:56:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:03,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:56:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:03,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:56:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:56:03,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:03,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261617086] [2022-11-02 20:56:03,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261617086] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:03,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756454790] [2022-11-02 20:56:03,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:03,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:03,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:03,773 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:03,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:56:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:05,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 3715 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:05,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:56:05,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:05,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756454790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:05,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:56:05,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:56:05,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590119785] [2022-11-02 20:56:05,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:05,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:05,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:05,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:05,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:05,511 INFO L87 Difference]: Start difference. First operand 637 states and 940 transitions. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:56:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:05,924 INFO L93 Difference]: Finished difference Result 1977 states and 2920 transitions. [2022-11-02 20:56:05,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:05,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:56:05,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:05,929 INFO L225 Difference]: With dead ends: 1977 [2022-11-02 20:56:05,930 INFO L226 Difference]: Without dead ends: 1350 [2022-11-02 20:56:05,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:56:05,931 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 1518 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:05,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1573 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:56:05,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2022-11-02 20:56:05,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 669. [2022-11-02 20:56:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 661 states have (on average 1.475037821482602) internal successors, (975), 661 states have internal predecessors, (975), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:56:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 987 transitions. [2022-11-02 20:56:05,956 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 987 transitions. Word has length 346 [2022-11-02 20:56:05,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:05,956 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 987 transitions. [2022-11-02 20:56:05,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:56:05,957 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 987 transitions. [2022-11-02 20:56:05,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:56:05,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:05,963 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:06,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-02 20:56:06,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:06,189 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:06,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:06,190 INFO L85 PathProgramCache]: Analyzing trace with hash 546709327, now seen corresponding path program 1 times [2022-11-02 20:56:06,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:06,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046706495] [2022-11-02 20:56:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:06,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:08,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:56:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:08,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:56:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:08,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:56:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:08,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:56:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:08,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:56:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:56:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:56:08,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:08,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046706495] [2022-11-02 20:56:08,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046706495] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:08,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036126981] [2022-11-02 20:56:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:08,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:08,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:08,425 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:08,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:56:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:09,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 3714 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:09,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:56:10,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:10,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036126981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:10,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:56:10,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:56:10,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878392124] [2022-11-02 20:56:10,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:10,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:10,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:10,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:10,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:10,123 INFO L87 Difference]: Start difference. First operand 669 states and 987 transitions. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:56:10,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:10,514 INFO L93 Difference]: Finished difference Result 2023 states and 2986 transitions. [2022-11-02 20:56:10,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:10,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:56:10,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:10,519 INFO L225 Difference]: With dead ends: 2023 [2022-11-02 20:56:10,519 INFO L226 Difference]: Without dead ends: 1364 [2022-11-02 20:56:10,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:56:10,523 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 1495 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:10,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1596 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:56:10,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-11-02 20:56:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 683. [2022-11-02 20:56:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 675 states have (on average 1.474074074074074) internal successors, (995), 675 states have internal predecessors, (995), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:56:10,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1007 transitions. [2022-11-02 20:56:10,547 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1007 transitions. Word has length 346 [2022-11-02 20:56:10,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:10,548 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1007 transitions. [2022-11-02 20:56:10,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:56:10,548 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1007 transitions. [2022-11-02 20:56:10,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:56:10,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:10,551 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:10,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:10,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:10,777 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:10,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:10,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1714863923, now seen corresponding path program 1 times [2022-11-02 20:56:10,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:10,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647901651] [2022-11-02 20:56:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:10,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:56:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:56:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:56:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:56:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:56:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:56:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:56:32,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:32,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647901651] [2022-11-02 20:56:32,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647901651] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:32,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590761338] [2022-11-02 20:56:32,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:32,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:32,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:32,265 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:32,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:56:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:33,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 3713 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 20:56:33,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:56:35,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 25 proven. 55 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:56:36,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590761338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:36,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:36,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 10] total 19 [2022-11-02 20:56:36,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789718996] [2022-11-02 20:56:36,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:36,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:56:36,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:36,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:56:36,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:56:36,651 INFO L87 Difference]: Start difference. First operand 683 states and 1007 transitions. Second operand has 19 states, 19 states have (on average 40.473684210526315) internal successors, (769), 19 states have internal predecessors, (769), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-02 20:56:37,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:37,623 INFO L93 Difference]: Finished difference Result 2556 states and 3778 transitions. [2022-11-02 20:56:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:56:37,624 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 40.473684210526315) internal successors, (769), 19 states have internal predecessors, (769), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 346 [2022-11-02 20:56:37,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:37,630 INFO L225 Difference]: With dead ends: 2556 [2022-11-02 20:56:37,631 INFO L226 Difference]: Without dead ends: 1883 [2022-11-02 20:56:37,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 689 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:56:37,633 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 3943 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3943 SdHoareTripleChecker+Valid, 4501 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:37,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3943 Valid, 4501 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:56:37,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2022-11-02 20:56:37,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 821. [2022-11-02 20:56:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 813 states have (on average 1.4710947109471095) internal successors, (1196), 813 states have internal predecessors, (1196), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:56:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1208 transitions. [2022-11-02 20:56:37,664 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1208 transitions. Word has length 346 [2022-11-02 20:56:37,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:37,665 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1208 transitions. [2022-11-02 20:56:37,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 40.473684210526315) internal successors, (769), 19 states have internal predecessors, (769), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-02 20:56:37,665 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1208 transitions. [2022-11-02 20:56:37,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:56:37,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:37,668 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:37,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:37,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:56:37,897 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:37,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:37,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1714804341, now seen corresponding path program 1 times [2022-11-02 20:56:37,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:37,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689407713] [2022-11-02 20:56:37,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:37,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:21,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:57:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:21,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:57:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:21,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:57:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:21,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:57:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:21,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:57:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:21,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:57:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:57:21,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:21,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689407713] [2022-11-02 20:57:21,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689407713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:21,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:21,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:57:21,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568895364] [2022-11-02 20:57:21,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:21,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:57:21,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:21,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:57:21,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:57:21,823 INFO L87 Difference]: Start difference. First operand 821 states and 1208 transitions. Second operand has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:57:24,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:24,637 INFO L93 Difference]: Finished difference Result 4186 states and 6166 transitions. [2022-11-02 20:57:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:57:24,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:57:24,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:24,648 INFO L225 Difference]: With dead ends: 4186 [2022-11-02 20:57:24,649 INFO L226 Difference]: Without dead ends: 3513 [2022-11-02 20:57:24,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:57:24,652 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 4627 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:24,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 2875 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:57:24,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3513 states. [2022-11-02 20:57:24,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3513 to 1810. [2022-11-02 20:57:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1799 states have (on average 1.4741523068371318) internal successors, (2652), 1799 states have internal predecessors, (2652), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-02 20:57:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2670 transitions. [2022-11-02 20:57:24,710 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2670 transitions. Word has length 346 [2022-11-02 20:57:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:24,710 INFO L495 AbstractCegarLoop]: Abstraction has 1810 states and 2670 transitions. [2022-11-02 20:57:24,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:57:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2670 transitions. [2022-11-02 20:57:24,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:57:24,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:24,715 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:24,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:57:24,715 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:24,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:24,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1273020557, now seen corresponding path program 1 times [2022-11-02 20:57:24,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:24,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051704330] [2022-11-02 20:57:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:24,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:54,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:57:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:55,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:57:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:55,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:57:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:55,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:57:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:55,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:57:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:55,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:57:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:57:55,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:55,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051704330] [2022-11-02 20:57:55,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051704330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:55,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:55,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:57:55,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929316398] [2022-11-02 20:57:55,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:55,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:57:55,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:55,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:57:55,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:57:55,037 INFO L87 Difference]: Start difference. First operand 1810 states and 2670 transitions. Second operand has 8 states, 8 states have (on average 39.875) internal successors, (319), 8 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:57:57,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:57,670 INFO L93 Difference]: Finished difference Result 3588 states and 5284 transitions. [2022-11-02 20:57:57,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:57:57,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 39.875) internal successors, (319), 8 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:57:57,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:57,679 INFO L225 Difference]: With dead ends: 3588 [2022-11-02 20:57:57,679 INFO L226 Difference]: Without dead ends: 2915 [2022-11-02 20:57:57,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:57:57,682 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 3309 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3309 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:57,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3309 Valid, 2641 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:57:57,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2022-11-02 20:57:57,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1143. [2022-11-02 20:57:57,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1135 states have (on average 1.4722466960352423) internal successors, (1671), 1135 states have internal predecessors, (1671), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:57:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1683 transitions. [2022-11-02 20:57:57,727 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1683 transitions. Word has length 346 [2022-11-02 20:57:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:57,728 INFO L495 AbstractCegarLoop]: Abstraction has 1143 states and 1683 transitions. [2022-11-02 20:57:57,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.875) internal successors, (319), 8 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:57:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1683 transitions. [2022-11-02 20:57:57,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:57:57,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:57,733 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:57,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:57:57,733 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:57,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:57,734 INFO L85 PathProgramCache]: Analyzing trace with hash -852970739, now seen corresponding path program 1 times [2022-11-02 20:57:57,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:57,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396529398] [2022-11-02 20:57:57,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:57,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:26,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:58:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:26,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:58:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:26,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:58:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:26,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:58:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:26,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:58:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:26,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:58:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 68 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:58:26,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:26,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396529398] [2022-11-02 20:58:26,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396529398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:26,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614676393] [2022-11-02 20:58:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:26,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:26,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:26,811 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:26,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ae325b-94d8-4a1e-8ae7-c09b15985dca/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:58:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:31,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 3715 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-02 20:58:31,475 INFO L286 TraceCheckSpWp]: Computing forward predicates...