./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_doub_access_init_const.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-cav19/array_doub_access_init_const.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db44bcd2632ea44e8f4cb990cbfca281afcea3a1e6019a6e92bc74bb29013bf8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:40:55,013 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:40:55,078 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:40:55,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:40:55,082 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:40:55,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:40:55,109 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:40:55,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:40:55,110 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:40:55,111 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:40:55,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:40:55,112 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:40:55,113 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:40:55,113 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:40:55,114 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:40:55,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:40:55,115 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:40:55,115 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:40:55,116 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:40:55,116 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:40:55,117 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:40:55,118 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:40:55,118 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:40:55,119 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:40:55,119 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:40:55,119 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:40:55,120 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:40:55,120 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:40:55,121 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:40:55,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:40:55,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:40:55,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:40:55,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:40:55,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:40:55,123 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:40:55,123 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:40:55,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:40:55,123 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:40:55,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:40:55,124 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:40:55,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:40:55,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:40:55,124 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db44bcd2632ea44e8f4cb990cbfca281afcea3a1e6019a6e92bc74bb29013bf8 [2023-11-29 00:40:55,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:40:55,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:40:55,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:40:55,369 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:40:55,369 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:40:55,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/array-cav19/array_doub_access_init_const.c [2023-11-29 00:40:58,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:40:58,408 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:40:58,409 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/sv-benchmarks/c/array-cav19/array_doub_access_init_const.c [2023-11-29 00:40:58,416 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/data/3e11e4246/0c6831dd0ea949d79c1b28ce55ed82b7/FLAG61bcc1367 [2023-11-29 00:40:58,432 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/data/3e11e4246/0c6831dd0ea949d79c1b28ce55ed82b7 [2023-11-29 00:40:58,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:40:58,436 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:40:58,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:40:58,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:40:58,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:40:58,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:40:58" (1/1) ... [2023-11-29 00:40:58,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd3eeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58, skipping insertion in model container [2023-11-29 00:40:58,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:40:58" (1/1) ... [2023-11-29 00:40:58,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:40:58,618 WARN L240 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_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/sv-benchmarks/c/array-cav19/array_doub_access_init_const.c[419,432] [2023-11-29 00:40:58,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:40:58,641 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:40:58,653 WARN L240 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_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/sv-benchmarks/c/array-cav19/array_doub_access_init_const.c[419,432] [2023-11-29 00:40:58,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:40:58,673 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:40:58,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58 WrapperNode [2023-11-29 00:40:58,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:40:58,675 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:40:58,675 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:40:58,676 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:40:58,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58" (1/1) ... [2023-11-29 00:40:58,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58" (1/1) ... [2023-11-29 00:40:58,705 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2023-11-29 00:40:58,705 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:40:58,706 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:40:58,706 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:40:58,706 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:40:58,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58" (1/1) ... [2023-11-29 00:40:58,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58" (1/1) ... [2023-11-29 00:40:58,716 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58" (1/1) ... [2023-11-29 00:40:58,729 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-11-29 00:40:58,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58" (1/1) ... [2023-11-29 00:40:58,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58" (1/1) ... [2023-11-29 00:40:58,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58" (1/1) ... [2023-11-29 00:40:58,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58" (1/1) ... [2023-11-29 00:40:58,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58" (1/1) ... [2023-11-29 00:40:58,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58" (1/1) ... [2023-11-29 00:40:58,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:40:58,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:40:58,743 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:40:58,743 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:40:58,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58" (1/1) ... [2023-11-29 00:40:58,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:40:58,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:40:58,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:40:58,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:40:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:40:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:40:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:40:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:40:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:40:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:40:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:40:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:40:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:40:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:40:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:40:58,883 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:40:58,885 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:40:58,976 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:40:59,003 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:40:59,004 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 00:40:59,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:40:59 BoogieIcfgContainer [2023-11-29 00:40:59,004 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:40:59,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:40:59,008 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:40:59,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:40:59,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:40:58" (1/3) ... [2023-11-29 00:40:59,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390b14a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:40:59, skipping insertion in model container [2023-11-29 00:40:59,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:40:58" (2/3) ... [2023-11-29 00:40:59,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390b14a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:40:59, skipping insertion in model container [2023-11-29 00:40:59,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:40:59" (3/3) ... [2023-11-29 00:40:59,014 INFO L112 eAbstractionObserver]: Analyzing ICFG array_doub_access_init_const.c [2023-11-29 00:40:59,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:40:59,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:40:59,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:40:59,086 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=LoopHeads, 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;@14247b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:40:59,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:40:59,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:40:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 00:40:59,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:40:59,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:40:59,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:40:59,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:40:59,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2082633915, now seen corresponding path program 1 times [2023-11-29 00:40:59,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:40:59,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014546056] [2023-11-29 00:40:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:40:59,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:40:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:40:59,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:40:59,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014546056] [2023-11-29 00:40:59,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014546056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:40:59,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:40:59,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:40:59,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658343973] [2023-11-29 00:40:59,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:40:59,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:40:59,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:40:59,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:40:59,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:40:59,370 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:40:59,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:40:59,402 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2023-11-29 00:40:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:40:59,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 00:40:59,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:40:59,409 INFO L225 Difference]: With dead ends: 19 [2023-11-29 00:40:59,409 INFO L226 Difference]: Without dead ends: 9 [2023-11-29 00:40:59,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:40:59,414 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:40:59,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:40:59,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-29 00:40:59,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-29 00:40:59,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:40:59,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-11-29 00:40:59,440 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-11-29 00:40:59,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:40:59,440 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-11-29 00:40:59,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:40:59,440 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-11-29 00:40:59,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:40:59,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:40:59,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:40:59,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:40:59,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:40:59,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:40:59,442 INFO L85 PathProgramCache]: Analyzing trace with hash 885878099, now seen corresponding path program 1 times [2023-11-29 00:40:59,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:40:59,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77231763] [2023-11-29 00:40:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:40:59,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:40:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:40:59,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:40:59,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77231763] [2023-11-29 00:40:59,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77231763] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:40:59,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959847275] [2023-11-29 00:40:59,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:40:59,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:40:59,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:40:59,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:40:59,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:40:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:40:59,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:40:59,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:40:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:40:59,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:40:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:40:59,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959847275] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:40:59,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:40:59,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-29 00:40:59,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103888764] [2023-11-29 00:40:59,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:40:59,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:40:59,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:40:59,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:40:59,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:40:59,702 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:40:59,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:40:59,724 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2023-11-29 00:40:59,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:40:59,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 00:40:59,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:40:59,726 INFO L225 Difference]: With dead ends: 18 [2023-11-29 00:40:59,726 INFO L226 Difference]: Without dead ends: 12 [2023-11-29 00:40:59,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:40:59,728 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:40:59,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:40:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-29 00:40:59,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-29 00:40:59,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:40:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-11-29 00:40:59,733 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2023-11-29 00:40:59,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:40:59,733 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-29 00:40:59,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:40:59,734 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-11-29 00:40:59,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 00:40:59,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:40:59,734 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-29 00:40:59,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 00:40:59,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:40:59,936 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:40:59,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:40:59,937 INFO L85 PathProgramCache]: Analyzing trace with hash 867015365, now seen corresponding path program 2 times [2023-11-29 00:40:59,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:40:59,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454310896] [2023-11-29 00:40:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:40:59,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:40:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:00,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:00,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454310896] [2023-11-29 00:41:00,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454310896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:41:00,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347035040] [2023-11-29 00:41:00,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:41:00,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:00,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:00,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:41:00,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:41:00,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:41:00,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:41:00,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:41:00,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:00,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:00,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:41:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:00,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347035040] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:41:00,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:41:00,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-29 00:41:00,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040350100] [2023-11-29 00:41:00,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:41:00,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 00:41:00,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:00,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 00:41:00,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:41:00,309 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:41:00,343 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2023-11-29 00:41:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:41:00,344 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-29 00:41:00,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:41:00,344 INFO L225 Difference]: With dead ends: 24 [2023-11-29 00:41:00,344 INFO L226 Difference]: Without dead ends: 18 [2023-11-29 00:41:00,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:41:00,347 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:41:00,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:41:00,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-29 00:41:00,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-29 00:41:00,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:00,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-11-29 00:41:00,353 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2023-11-29 00:41:00,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:41:00,353 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-11-29 00:41:00,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:00,354 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-11-29 00:41:00,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:41:00,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:41:00,355 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-11-29 00:41:00,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:41:00,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:00,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:41:00,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1152978939, now seen corresponding path program 3 times [2023-11-29 00:41:00,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:41:00,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634126261] [2023-11-29 00:41:00,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:00,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:41:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:00,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:00,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634126261] [2023-11-29 00:41:00,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634126261] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:41:00,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443352778] [2023-11-29 00:41:00,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:41:00,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:00,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:00,856 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:41:00,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:41:01,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 00:41:01,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:41:01,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:41:01,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:01,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:41:01,478 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:01,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443352778] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:41:01,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:41:01,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-11-29 00:41:01,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624557323] [2023-11-29 00:41:01,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:41:01,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 00:41:01,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:01,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 00:41:01,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=640, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 00:41:01,483 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:01,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:41:01,551 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2023-11-29 00:41:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 00:41:01,552 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-29 00:41:01,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:41:01,553 INFO L225 Difference]: With dead ends: 36 [2023-11-29 00:41:01,553 INFO L226 Difference]: Without dead ends: 30 [2023-11-29 00:41:01,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=550, Invalid=640, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 00:41:01,555 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:41:01,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:41:01,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-29 00:41:01,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-29 00:41:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:01,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2023-11-29 00:41:01,564 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 16 [2023-11-29 00:41:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:41:01,564 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2023-11-29 00:41:01,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2023-11-29 00:41:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 00:41:01,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:41:01,566 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2023-11-29 00:41:01,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:41:01,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-29 00:41:01,768 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:41:01,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:01,769 INFO L85 PathProgramCache]: Analyzing trace with hash 593414789, now seen corresponding path program 4 times [2023-11-29 00:41:01,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:41:01,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799353587] [2023-11-29 00:41:01,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:01,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:41:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:02,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:02,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799353587] [2023-11-29 00:41:02,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799353587] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:41:02,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048461967] [2023-11-29 00:41:02,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:41:02,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:02,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:02,406 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:41:02,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:41:07,229 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:41:07,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:41:07,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 00:41:07,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:07,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:41:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:08,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048461967] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:41:08,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:41:08,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2023-11-29 00:41:08,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569318106] [2023-11-29 00:41:08,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:41:08,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-11-29 00:41:08,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-11-29 00:41:08,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2254, Invalid=2716, Unknown=0, NotChecked=0, Total=4970 [2023-11-29 00:41:08,542 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 71 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:08,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:41:08,655 INFO L93 Difference]: Finished difference Result 60 states and 85 transitions. [2023-11-29 00:41:08,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 00:41:08,656 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-29 00:41:08,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:41:08,657 INFO L225 Difference]: With dead ends: 60 [2023-11-29 00:41:08,657 INFO L226 Difference]: Without dead ends: 54 [2023-11-29 00:41:08,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2254, Invalid=2716, Unknown=0, NotChecked=0, Total=4970 [2023-11-29 00:41:08,661 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:41:08,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:41:08,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-29 00:41:08,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-29 00:41:08,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:08,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2023-11-29 00:41:08,670 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 28 [2023-11-29 00:41:08,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:41:08,671 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2023-11-29 00:41:08,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:08,671 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2023-11-29 00:41:08,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 00:41:08,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:41:08,673 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1] [2023-11-29 00:41:08,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:41:08,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:08,873 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:41:08,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:08,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2100084859, now seen corresponding path program 5 times [2023-11-29 00:41:08,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:41:08,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519352590] [2023-11-29 00:41:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:08,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:41:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:10,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:10,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519352590] [2023-11-29 00:41:10,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519352590] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:41:10,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504698682] [2023-11-29 00:41:10,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:41:10,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:10,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:10,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:41:10,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:50:54,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-11-29 00:50:54,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:50:54,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-29 00:50:54,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:50:56,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:50:56,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:50:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:50:59,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504698682] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:50:59,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:50:59,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 142 [2023-11-29 00:50:59,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351318704] [2023-11-29 00:50:59,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:50:59,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2023-11-29 00:50:59,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:50:59,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2023-11-29 00:50:59,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9118, Invalid=11188, Unknown=0, NotChecked=0, Total=20306 [2023-11-29 00:50:59,484 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 143 states, 143 states have (on average 1.034965034965035) internal successors, (148), 142 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:59,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:50:59,751 INFO L93 Difference]: Finished difference Result 108 states and 157 transitions. [2023-11-29 00:50:59,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-29 00:50:59,752 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 1.034965034965035) internal successors, (148), 142 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-29 00:50:59,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:50:59,755 INFO L225 Difference]: With dead ends: 108 [2023-11-29 00:50:59,755 INFO L226 Difference]: Without dead ends: 102 [2023-11-29 00:50:59,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8693 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=9118, Invalid=11188, Unknown=0, NotChecked=0, Total=20306 [2023-11-29 00:50:59,764 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:50:59,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:50:59,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-29 00:50:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-11-29 00:50:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2023-11-29 00:50:59,782 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 52 [2023-11-29 00:50:59,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:50:59,783 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2023-11-29 00:50:59,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 1.034965034965035) internal successors, (148), 142 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:59,783 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2023-11-29 00:50:59,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:50:59,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:50:59,787 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1] [2023-11-29 00:50:59,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 00:50:59,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 00:50:59,988 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:50:59,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:59,988 INFO L85 PathProgramCache]: Analyzing trace with hash -464574075, now seen corresponding path program 6 times [2023-11-29 00:50:59,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:59,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168950110] [2023-11-29 00:50:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:59,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:51:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:51:07,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:51:07,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168950110] [2023-11-29 00:51:07,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168950110] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:51:07,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205995619] [2023-11-29 00:51:07,534 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:51:07,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:51:07,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:51:07,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:51:07,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4c3a61-7674-4c27-9bd4-b8746bd3e6e9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process