./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX --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 2535b8df62b232497a5d3d6ff06546d8e28bdaf58cbf4426ff971bf84e825948 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:18:16,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:18:16,783 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:18:16,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:18:16,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:18:16,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:18:16,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:18:16,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:18:16,829 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:18:16,831 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:18:16,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:18:16,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:18:16,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:18:16,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:18:16,835 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:18:16,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:18:16,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:18:16,837 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:18:16,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:18:16,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:18:16,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:18:16,843 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:18:16,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:18:16,843 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:18:16,843 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:18:16,844 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:18:16,844 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:18:16,844 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:18:16,844 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:18:16,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:18:16,845 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:18:16,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:18:16,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:18:16,846 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:18:16,846 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:18:16,847 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:18:16,848 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:18:16,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:18:16,849 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:18:16,849 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:18:16,849 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:18:16,850 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:18:16,850 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_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2535b8df62b232497a5d3d6ff06546d8e28bdaf58cbf4426ff971bf84e825948 [2024-11-08 16:18:17,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:18:17,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:18:17,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:18:17,248 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:18:17,249 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:18:17,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c Unable to find full path for "g++" [2024-11-08 16:18:19,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:18:19,441 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:18:19,442 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c [2024-11-08 16:18:19,450 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/data/6bcac259f/dff4271943ec41cdb405a96a97bba261/FLAG4f5669188 [2024-11-08 16:18:19,818 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/data/6bcac259f/dff4271943ec41cdb405a96a97bba261 [2024-11-08 16:18:19,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:18:19,823 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:18:19,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:18:19,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:18:19,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:18:19,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:18:19" (1/1) ... [2024-11-08 16:18:19,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@317971ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:19, skipping insertion in model container [2024-11-08 16:18:19,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:18:19" (1/1) ... [2024-11-08 16:18:19,853 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:18:20,056 WARN L250 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_37327ba7-6f87-4771-8db3-a34b73872ea9/sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c[331,344] [2024-11-08 16:18:20,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:18:20,089 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:18:20,099 WARN L250 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_37327ba7-6f87-4771-8db3-a34b73872ea9/sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c[331,344] [2024-11-08 16:18:20,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:18:20,125 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:18:20,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:20 WrapperNode [2024-11-08 16:18:20,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:18:20,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:18:20,128 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:18:20,128 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:18:20,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:20" (1/1) ... [2024-11-08 16:18:20,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:20" (1/1) ... [2024-11-08 16:18:20,175 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-11-08 16:18:20,176 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:18:20,177 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:18:20,177 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:18:20,177 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:18:20,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:20" (1/1) ... [2024-11-08 16:18:20,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:20" (1/1) ... [2024-11-08 16:18:20,192 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:20" (1/1) ... [2024-11-08 16:18:20,212 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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]. [2024-11-08 16:18:20,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:20" (1/1) ... [2024-11-08 16:18:20,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:20" (1/1) ... [2024-11-08 16:18:20,223 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:20" (1/1) ... [2024-11-08 16:18:20,234 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:20" (1/1) ... [2024-11-08 16:18:20,239 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:20" (1/1) ... [2024-11-08 16:18:20,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:20" (1/1) ... [2024-11-08 16:18:20,248 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:18:20,263 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:18:20,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:18:20,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:18:20,265 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:20" (1/1) ... [2024-11-08 16:18:20,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:18:20,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:18:20,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:18:20,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:18:20,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:18:20,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:18:20,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:18:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:18:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:18:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:18:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:18:20,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:18:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:18:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:18:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:18:20,427 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:18:20,429 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:18:20,594 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-08 16:18:20,595 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:18:20,606 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:18:20,607 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:18:20,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:18:20 BoogieIcfgContainer [2024-11-08 16:18:20,607 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:18:20,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:18:20,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:18:20,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:18:20,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:18:19" (1/3) ... [2024-11-08 16:18:20,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df26682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:18:20, skipping insertion in model container [2024-11-08 16:18:20,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:18:20" (2/3) ... [2024-11-08 16:18:20,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df26682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:18:20, skipping insertion in model container [2024-11-08 16:18:20,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:18:20" (3/3) ... [2024-11-08 16:18:20,616 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_5.c [2024-11-08 16:18:20,635 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:18:20,635 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:18:20,702 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:18:20,715 INFO L333 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, 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;@48b08a1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:18:20,716 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 16:18:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 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) [2024-11-08 16:18:20,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 16:18:20,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:20,729 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:20,731 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:18:20,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:20,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1757517356, now seen corresponding path program 1 times [2024-11-08 16:18:20,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:20,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500932103] [2024-11-08 16:18:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:20,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:20,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:20,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500932103] [2024-11-08 16:18:20,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500932103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:18:20,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:18:20,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:18:20,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933883158] [2024-11-08 16:18:20,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:18:20,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:18:20,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:18:20,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:18:20,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:18:20,971 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-08 16:18:20,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:18:20,988 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2024-11-08 16:18:20,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:18:20,991 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2024-11-08 16:18:20,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:18:20,997 INFO L225 Difference]: With dead ends: 43 [2024-11-08 16:18:20,997 INFO L226 Difference]: Without dead ends: 19 [2024-11-08 16:18:21,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:18:21,004 INFO L432 NwaCegarLoop]: 29 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, 29 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 [2024-11-08 16:18:21,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:18:21,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-08 16:18:21,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-08 16:18:21,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2024-11-08 16:18:21,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2024-11-08 16:18:21,039 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 12 [2024-11-08 16:18:21,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:18:21,040 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2024-11-08 16:18:21,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-08 16:18:21,041 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2024-11-08 16:18:21,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 16:18:21,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:21,042 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:21,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:18:21,042 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:18:21,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:21,043 INFO L85 PathProgramCache]: Analyzing trace with hash 2144422930, now seen corresponding path program 1 times [2024-11-08 16:18:21,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:21,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817147587] [2024-11-08 16:18:21,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:21,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:21,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:21,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817147587] [2024-11-08 16:18:21,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817147587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:18:21,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:18:21,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:18:21,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819324696] [2024-11-08 16:18:21,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:18:21,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:18:21,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:18:21,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:18:21,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:18:21,312 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-08 16:18:21,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:18:21,420 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2024-11-08 16:18:21,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:18:21,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2024-11-08 16:18:21,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:18:21,422 INFO L225 Difference]: With dead ends: 48 [2024-11-08 16:18:21,422 INFO L226 Difference]: Without dead ends: 33 [2024-11-08 16:18:21,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:18:21,424 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:18:21,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 19 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:18:21,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-08 16:18:21,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2024-11-08 16:18:21,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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) [2024-11-08 16:18:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-08 16:18:21,434 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 12 [2024-11-08 16:18:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:18:21,434 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-08 16:18:21,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-08 16:18:21,438 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-08 16:18:21,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 16:18:21,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:21,439 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:21,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:18:21,440 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:18:21,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:21,440 INFO L85 PathProgramCache]: Analyzing trace with hash -14152099, now seen corresponding path program 1 times [2024-11-08 16:18:21,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:21,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079169532] [2024-11-08 16:18:21,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:21,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:21,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:21,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079169532] [2024-11-08 16:18:21,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079169532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:18:21,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:18:21,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:18:21,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082034960] [2024-11-08 16:18:21,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:18:21,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:18:21,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:18:21,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:18:21,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:18:21,778 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-11-08 16:18:21,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:18:21,851 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-11-08 16:18:21,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:18:21,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2024-11-08 16:18:21,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:18:21,853 INFO L225 Difference]: With dead ends: 48 [2024-11-08 16:18:21,854 INFO L226 Difference]: Without dead ends: 33 [2024-11-08 16:18:21,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:18:21,855 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:18:21,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 37 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:18:21,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-08 16:18:21,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2024-11-08 16:18:21,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 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) [2024-11-08 16:18:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-08 16:18:21,861 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 18 [2024-11-08 16:18:21,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:18:21,862 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-08 16:18:21,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-11-08 16:18:21,862 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-08 16:18:21,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 16:18:21,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:21,863 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:21,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:18:21,864 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:18:21,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash -407179109, now seen corresponding path program 1 times [2024-11-08 16:18:21,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:21,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773007792] [2024-11-08 16:18:21,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:21,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:22,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:22,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773007792] [2024-11-08 16:18:22,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773007792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:18:22,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578574410] [2024-11-08 16:18:22,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:22,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:22,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:18:22,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:18:22,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:18:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:22,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:18:22,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:18:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:22,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:18:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:22,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578574410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:18:22,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:18:22,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-08 16:18:22,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134887872] [2024-11-08 16:18:22,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:18:22,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:18:22,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:18:22,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:18:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:18:22,351 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 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) [2024-11-08 16:18:22,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:18:22,512 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2024-11-08 16:18:22,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:18:22,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 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 18 [2024-11-08 16:18:22,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:18:22,514 INFO L225 Difference]: With dead ends: 78 [2024-11-08 16:18:22,514 INFO L226 Difference]: Without dead ends: 63 [2024-11-08 16:18:22,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:18:22,516 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 151 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:18:22,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 34 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:18:22,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-08 16:18:22,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 38. [2024-11-08 16:18:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 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) [2024-11-08 16:18:22,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2024-11-08 16:18:22,525 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 18 [2024-11-08 16:18:22,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:18:22,526 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2024-11-08 16:18:22,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 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) [2024-11-08 16:18:22,526 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2024-11-08 16:18:22,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 16:18:22,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:22,528 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:22,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:18:22,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-08 16:18:22,729 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:18:22,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:22,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1242612864, now seen corresponding path program 1 times [2024-11-08 16:18:22,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:22,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905356436] [2024-11-08 16:18:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:22,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:23,157 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 16:18:23,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905356436] [2024-11-08 16:18:23,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905356436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:18:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662626103] [2024-11-08 16:18:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:23,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:23,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:18:23,164 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:18:23,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:18:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:23,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 16:18:23,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:18:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:23,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:18:23,761 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:23,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662626103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:18:23,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:18:23,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-11-08 16:18:23,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606168763] [2024-11-08 16:18:23,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:18:23,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 16:18:23,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:18:23,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 16:18:23,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-08 16:18:23,768 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2024-11-08 16:18:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:18:24,399 INFO L93 Difference]: Finished difference Result 185 states and 230 transitions. [2024-11-08 16:18:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 16:18:24,400 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 36 [2024-11-08 16:18:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:18:24,401 INFO L225 Difference]: With dead ends: 185 [2024-11-08 16:18:24,401 INFO L226 Difference]: Without dead ends: 162 [2024-11-08 16:18:24,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=395, Invalid=727, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 16:18:24,403 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 462 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:18:24,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 107 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 16:18:24,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-08 16:18:24,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 74. [2024-11-08 16:18:24,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 73 states have internal predecessors, (89), 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) [2024-11-08 16:18:24,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2024-11-08 16:18:24,415 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 36 [2024-11-08 16:18:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:18:24,415 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2024-11-08 16:18:24,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2024-11-08 16:18:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2024-11-08 16:18:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 16:18:24,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:24,417 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 8, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:24,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 16:18:24,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:24,618 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:18:24,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:24,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1092008698, now seen corresponding path program 2 times [2024-11-08 16:18:24,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:24,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237826832] [2024-11-08 16:18:24,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:24,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-08 16:18:25,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:25,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237826832] [2024-11-08 16:18:25,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237826832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:18:25,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:18:25,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 16:18:25,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970924498] [2024-11-08 16:18:25,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:18:25,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:18:25,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:18:25,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:18:25,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:18:25,386 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2024-11-08 16:18:25,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:18:25,489 INFO L93 Difference]: Finished difference Result 142 states and 176 transitions. [2024-11-08 16:18:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:18:25,489 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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 72 [2024-11-08 16:18:25,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:18:25,490 INFO L225 Difference]: With dead ends: 142 [2024-11-08 16:18:25,490 INFO L226 Difference]: Without dead ends: 89 [2024-11-08 16:18:25,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:18:25,492 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 30 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:18:25,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 36 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:18:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-08 16:18:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2024-11-08 16:18:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 83 states have internal predecessors, (96), 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) [2024-11-08 16:18:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2024-11-08 16:18:25,503 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 72 [2024-11-08 16:18:25,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:18:25,503 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2024-11-08 16:18:25,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2024-11-08 16:18:25,504 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2024-11-08 16:18:25,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 16:18:25,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:25,505 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:25,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:18:25,506 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:18:25,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:25,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1002796736, now seen corresponding path program 3 times [2024-11-08 16:18:25,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:25,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551216071] [2024-11-08 16:18:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:25,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 153 proven. 75 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-08 16:18:25,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:25,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551216071] [2024-11-08 16:18:25,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551216071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:18:25,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393778798] [2024-11-08 16:18:25,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:18:25,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:25,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:18:25,952 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:18:25,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:18:26,088 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-08 16:18:26,089 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:18:26,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 16:18:26,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:18:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-08 16:18:26,805 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:18:26,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393778798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:18:26,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:18:26,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2024-11-08 16:18:26,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190813240] [2024-11-08 16:18:26,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:18:26,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:18:26,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:18:26,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:18:26,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-08 16:18:26,810 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 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) [2024-11-08 16:18:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:18:26,981 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2024-11-08 16:18:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:18:26,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 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 72 [2024-11-08 16:18:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:18:26,983 INFO L225 Difference]: With dead ends: 98 [2024-11-08 16:18:26,983 INFO L226 Difference]: Without dead ends: 96 [2024-11-08 16:18:26,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-08 16:18:26,985 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:18:26,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 48 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:18:26,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-08 16:18:26,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-08 16:18:26,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 95 states have internal predecessors, (110), 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) [2024-11-08 16:18:27,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2024-11-08 16:18:27,000 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 72 [2024-11-08 16:18:27,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:18:27,001 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2024-11-08 16:18:27,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 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) [2024-11-08 16:18:27,001 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2024-11-08 16:18:27,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 16:18:27,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:27,006 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:27,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:18:27,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 16:18:27,207 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:18:27,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:27,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1229388341, now seen corresponding path program 1 times [2024-11-08 16:18:27,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:27,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115418173] [2024-11-08 16:18:27,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:27,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 153 proven. 75 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-08 16:18:27,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:27,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115418173] [2024-11-08 16:18:27,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115418173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:18:27,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012580655] [2024-11-08 16:18:27,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:27,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:27,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:18:27,742 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:18:27,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:18:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:27,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 16:18:27,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:18:28,290 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:18:28,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:18:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:18:28,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012580655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:18:28,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:18:28,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2024-11-08 16:18:28,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545672533] [2024-11-08 16:18:28,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:18:28,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 16:18:28,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:18:28,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 16:18:28,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=618, Unknown=0, NotChecked=0, Total=992 [2024-11-08 16:18:28,712 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand has 32 states, 32 states have (on average 5.625) internal successors, (180), 31 states have internal predecessors, (180), 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) [2024-11-08 16:18:29,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:18:29,639 INFO L93 Difference]: Finished difference Result 646 states and 763 transitions. [2024-11-08 16:18:29,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 16:18:29,640 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.625) internal successors, (180), 31 states have internal predecessors, (180), 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 78 [2024-11-08 16:18:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:18:29,642 INFO L225 Difference]: With dead ends: 646 [2024-11-08 16:18:29,643 INFO L226 Difference]: Without dead ends: 589 [2024-11-08 16:18:29,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=671, Invalid=1135, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 16:18:29,645 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 728 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:18:29,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 170 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 16:18:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-08 16:18:29,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 180. [2024-11-08 16:18:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.1508379888268156) internal successors, (206), 179 states have internal predecessors, (206), 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) [2024-11-08 16:18:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 206 transitions. [2024-11-08 16:18:29,671 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 206 transitions. Word has length 78 [2024-11-08 16:18:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:18:29,671 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 206 transitions. [2024-11-08 16:18:29,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.625) internal successors, (180), 31 states have internal predecessors, (180), 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) [2024-11-08 16:18:29,672 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 206 transitions. [2024-11-08 16:18:29,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-08 16:18:29,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:29,674 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 11, 11, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:29,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:18:29,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:29,878 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:18:29,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:29,878 INFO L85 PathProgramCache]: Analyzing trace with hash 66630863, now seen corresponding path program 2 times [2024-11-08 16:18:29,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:29,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404583744] [2024-11-08 16:18:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:29,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 735 proven. 363 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-08 16:18:30,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:30,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404583744] [2024-11-08 16:18:30,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404583744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:18:30,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261394335] [2024-11-08 16:18:30,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:18:30,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:30,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:18:30,928 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:18:30,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:18:31,231 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:18:31,231 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:18:31,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 16:18:31,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:18:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:18:32,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:18:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:18:33,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261394335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:18:33,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:18:33,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 25, 25] total 61 [2024-11-08 16:18:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184222495] [2024-11-08 16:18:33,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:18:33,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-08 16:18:33,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:18:33,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-08 16:18:33,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1394, Invalid=2388, Unknown=0, NotChecked=0, Total=3782 [2024-11-08 16:18:33,718 INFO L87 Difference]: Start difference. First operand 180 states and 206 transitions. Second operand has 62 states, 62 states have (on average 5.806451612903226) internal successors, (360), 61 states have internal predecessors, (360), 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) [2024-11-08 16:18:36,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:18:36,168 INFO L93 Difference]: Finished difference Result 1342 states and 1585 transitions. [2024-11-08 16:18:36,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-08 16:18:36,169 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.806451612903226) internal successors, (360), 61 states have internal predecessors, (360), 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 150 [2024-11-08 16:18:36,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:18:36,174 INFO L225 Difference]: With dead ends: 1342 [2024-11-08 16:18:36,177 INFO L226 Difference]: Without dead ends: 1237 [2024-11-08 16:18:36,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2567, Invalid=4573, Unknown=0, NotChecked=0, Total=7140 [2024-11-08 16:18:36,180 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2097 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2097 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:18:36,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2097 Valid, 345 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:18:36,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2024-11-08 16:18:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 348. [2024-11-08 16:18:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.1469740634005763) internal successors, (398), 347 states have internal predecessors, (398), 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) [2024-11-08 16:18:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 398 transitions. [2024-11-08 16:18:36,226 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 398 transitions. Word has length 150 [2024-11-08 16:18:36,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:18:36,227 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 398 transitions. [2024-11-08 16:18:36,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.806451612903226) internal successors, (360), 61 states have internal predecessors, (360), 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) [2024-11-08 16:18:36,227 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 398 transitions. [2024-11-08 16:18:36,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-08 16:18:36,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:36,232 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 23, 23, 23, 23, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:36,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 16:18:36,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:36,433 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:18:36,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:36,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1160768215, now seen corresponding path program 3 times [2024-11-08 16:18:36,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:36,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275310157] [2024-11-08 16:18:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:36,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 3195 proven. 1587 refuted. 0 times theorem prover too weak. 1479 trivial. 0 not checked. [2024-11-08 16:18:39,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:39,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275310157] [2024-11-08 16:18:39,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275310157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:18:39,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500405718] [2024-11-08 16:18:39,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:18:39,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:39,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:18:39,569 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:18:39,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:18:39,879 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 16:18:39,880 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:18:39,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 16:18:39,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:18:41,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2024-11-08 16:18:41,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-08 16:18:41,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 45 proven. 181 refuted. 0 times theorem prover too weak. 6035 trivial. 0 not checked. [2024-11-08 16:18:41,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:18:41,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 65 [2024-11-08 16:18:41,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 16:18:41,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 89 [2024-11-08 16:18:41,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2024-11-08 16:18:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 6035 trivial. 0 not checked. [2024-11-08 16:18:44,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500405718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:18:44,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:18:44,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 8, 8] total 40 [2024-11-08 16:18:44,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661098436] [2024-11-08 16:18:44,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:18:44,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 16:18:44,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:18:44,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 16:18:44,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=1235, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 16:18:44,345 INFO L87 Difference]: Start difference. First operand 348 states and 398 transitions. Second operand has 41 states, 41 states have (on average 4.804878048780488) internal successors, (197), 40 states have internal predecessors, (197), 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) [2024-11-08 16:18:52,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:18:52,524 INFO L93 Difference]: Finished difference Result 1491 states and 1749 transitions. [2024-11-08 16:18:52,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-08 16:18:52,525 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.804878048780488) internal successors, (197), 40 states have internal predecessors, (197), 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 294 [2024-11-08 16:18:52,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:18:52,544 INFO L225 Difference]: With dead ends: 1491 [2024-11-08 16:18:52,545 INFO L226 Difference]: Without dead ends: 1290 [2024-11-08 16:18:52,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 573 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1712, Invalid=4294, Unknown=0, NotChecked=0, Total=6006 [2024-11-08 16:18:52,556 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 2483 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 350 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2483 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:18:52,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2483 Valid, 194 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 362 Invalid, 7 Unknown, 0 Unchecked, 5.4s Time] [2024-11-08 16:18:52,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2024-11-08 16:18:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 346. [2024-11-08 16:18:52,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.1420289855072463) internal successors, (394), 345 states have internal predecessors, (394), 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) [2024-11-08 16:18:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 394 transitions. [2024-11-08 16:18:52,635 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 394 transitions. Word has length 294 [2024-11-08 16:18:52,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:18:52,636 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 394 transitions. [2024-11-08 16:18:52,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.804878048780488) internal successors, (197), 40 states have internal predecessors, (197), 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) [2024-11-08 16:18:52,636 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 394 transitions. [2024-11-08 16:18:52,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-08 16:18:52,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:52,641 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 27, 24, 22, 19, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:52,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 16:18:52,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 16:18:52,842 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:18:52,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:52,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1338733427, now seen corresponding path program 4 times [2024-11-08 16:18:52,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:52,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937031640] [2024-11-08 16:18:52,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:52,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 3184 proven. 1728 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked. [2024-11-08 16:18:55,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:55,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937031640] [2024-11-08 16:18:55,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937031640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:18:55,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645367788] [2024-11-08 16:18:55,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:18:55,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:55,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:18:55,378 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:18:55,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:19:00,574 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:19:00,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:19:00,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 16:19:00,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:19:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:19:03,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:19:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6261 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:19:06,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645367788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:19:06,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:19:06,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 49, 49] total 122 [2024-11-08 16:19:06,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538415547] [2024-11-08 16:19:06,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:19:06,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2024-11-08 16:19:06,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:19:06,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2024-11-08 16:19:06,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5429, Invalid=9577, Unknown=0, NotChecked=0, Total=15006 [2024-11-08 16:19:06,565 INFO L87 Difference]: Start difference. First operand 346 states and 394 transitions. Second operand has 123 states, 123 states have (on average 5.9105691056910565) internal successors, (727), 122 states have internal predecessors, (727), 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) [2024-11-08 16:19:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:19:15,558 INFO L93 Difference]: Finished difference Result 3548 states and 4222 transitions. [2024-11-08 16:19:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-08 16:19:15,559 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 5.9105691056910565) internal successors, (727), 122 states have internal predecessors, (727), 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 294 [2024-11-08 16:19:15,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:19:15,568 INFO L225 Difference]: With dead ends: 3548 [2024-11-08 16:19:15,569 INFO L226 Difference]: Without dead ends: 3355 [2024-11-08 16:19:15,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 492 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9046 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=10082, Invalid=18648, Unknown=0, NotChecked=0, Total=28730 [2024-11-08 16:19:15,575 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 5795 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5795 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:19:15,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5795 Valid, 697 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 16:19:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2024-11-08 16:19:15,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 684. [2024-11-08 16:19:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.1449487554904831) internal successors, (782), 683 states have internal predecessors, (782), 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) [2024-11-08 16:19:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 782 transitions. [2024-11-08 16:19:15,661 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 782 transitions. Word has length 294 [2024-11-08 16:19:15,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:19:15,662 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 782 transitions. [2024-11-08 16:19:15,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 5.9105691056910565) internal successors, (727), 122 states have internal predecessors, (727), 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) [2024-11-08 16:19:15,663 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 782 transitions. [2024-11-08 16:19:15,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2024-11-08 16:19:15,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:19:15,677 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 50, 47, 47, 44, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:19:15,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 16:19:15,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 16:19:15,878 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:19:15,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:19:15,878 INFO L85 PathProgramCache]: Analyzing trace with hash -314116447, now seen corresponding path program 5 times [2024-11-08 16:19:15,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:19:15,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522117324] [2024-11-08 16:19:15,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:19:15,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:19:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:19:23,718 INFO L134 CoverageAnalysis]: Checked inductivity of 26325 backedges. 13299 proven. 6627 refuted. 0 times theorem prover too weak. 6399 trivial. 0 not checked. [2024-11-08 16:19:23,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:19:23,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522117324] [2024-11-08 16:19:23,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522117324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:19:23,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989316050] [2024-11-08 16:19:23,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:19:23,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:19:23,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:19:23,721 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:19:23,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37327ba7-6f87-4771-8db3-a34b73872ea9/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process