./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/Mono3_1.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_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/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_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/Mono3_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/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_65520122-052e-460d-808d-0c9868f8489c/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 0756a7f5fb7c80ee6b59c75ec6cf9015a96d2c6a2bbe84a426dbe33a7087e683 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:48:38,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:48:38,094 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:48:38,100 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:48:38,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:48:38,142 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:48:38,143 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:48:38,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:48:38,144 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:48:38,145 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:48:38,146 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:48:38,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:48:38,148 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:48:38,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:48:38,150 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:48:38,151 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:48:38,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:48:38,151 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:48:38,152 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:48:38,152 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:48:38,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:48:38,153 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:48:38,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:48:38,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:48:38,157 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:48:38,157 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:48:38,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:48:38,158 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:48:38,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:48:38,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:48:38,159 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:48:38,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:48:38,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:48:38,161 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:48:38,161 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:48:38,161 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:48:38,162 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:48:38,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:48:38,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:48:38,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:48:38,164 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:48:38,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:48:38,164 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_65520122-052e-460d-808d-0c9868f8489c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0756a7f5fb7c80ee6b59c75ec6cf9015a96d2c6a2bbe84a426dbe33a7087e683 [2024-11-08 17:48:38,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:48:38,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:48:38,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:48:38,526 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:48:38,527 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:48:38,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/loops-crafted-1/Mono3_1.c Unable to find full path for "g++" [2024-11-08 17:48:40,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:48:40,795 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:48:40,795 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/sv-benchmarks/c/loops-crafted-1/Mono3_1.c [2024-11-08 17:48:40,802 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/data/ee14565a1/f501a993d91646d9b3aa53a67100a819/FLAGa5a3851f5 [2024-11-08 17:48:41,186 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/data/ee14565a1/f501a993d91646d9b3aa53a67100a819 [2024-11-08 17:48:41,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:48:41,190 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:48:41,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:48:41,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:48:41,199 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:48:41,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:48:41" (1/1) ... [2024-11-08 17:48:41,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3879dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41, skipping insertion in model container [2024-11-08 17:48:41,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:48:41" (1/1) ... [2024-11-08 17:48:41,225 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:48:41,409 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_65520122-052e-460d-808d-0c9868f8489c/sv-benchmarks/c/loops-crafted-1/Mono3_1.c[311,324] [2024-11-08 17:48:41,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:48:41,439 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:48:41,454 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_65520122-052e-460d-808d-0c9868f8489c/sv-benchmarks/c/loops-crafted-1/Mono3_1.c[311,324] [2024-11-08 17:48:41,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:48:41,479 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:48:41,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41 WrapperNode [2024-11-08 17:48:41,479 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:48:41,480 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:48:41,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:48:41,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:48:41,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41" (1/1) ... [2024-11-08 17:48:41,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41" (1/1) ... [2024-11-08 17:48:41,523 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2024-11-08 17:48:41,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:48:41,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:48:41,526 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:48:41,526 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:48:41,539 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41" (1/1) ... [2024-11-08 17:48:41,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41" (1/1) ... [2024-11-08 17:48:41,541 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41" (1/1) ... [2024-11-08 17:48:41,554 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 17:48:41,555 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41" (1/1) ... [2024-11-08 17:48:41,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41" (1/1) ... [2024-11-08 17:48:41,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41" (1/1) ... [2024-11-08 17:48:41,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41" (1/1) ... [2024-11-08 17:48:41,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41" (1/1) ... [2024-11-08 17:48:41,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41" (1/1) ... [2024-11-08 17:48:41,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:48:41,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:48:41,568 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:48:41,568 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:48:41,569 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41" (1/1) ... [2024-11-08 17:48:41,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:48:41,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:41,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:48:41,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:48:41,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:48:41,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:48:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:48:41,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:48:41,728 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:48:41,731 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:48:41,917 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-08 17:48:41,917 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:48:41,936 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:48:41,938 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:48:41,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:48:41 BoogieIcfgContainer [2024-11-08 17:48:41,939 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:48:41,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:48:41,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:48:41,951 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:48:41,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:48:41" (1/3) ... [2024-11-08 17:48:41,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fec87fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:48:41, skipping insertion in model container [2024-11-08 17:48:41,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:41" (2/3) ... [2024-11-08 17:48:41,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fec87fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:48:41, skipping insertion in model container [2024-11-08 17:48:41,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:48:41" (3/3) ... [2024-11-08 17:48:41,957 INFO L112 eAbstractionObserver]: Analyzing ICFG Mono3_1.c [2024-11-08 17:48:41,982 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:48:41,982 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:48:42,076 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:48:42,086 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;@425ff603, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:48:42,090 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 17:48:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 17:48:42,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-08 17:48:42,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:48:42,108 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 17:48:42,110 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:48:42,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:42,119 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2024-11-08 17:48:42,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:42,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129989102] [2024-11-08 17:48:42,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:42,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:42,388 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 17:48:42,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:42,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129989102] [2024-11-08 17:48:42,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129989102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:48:42,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:48:42,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:48:42,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626578553] [2024-11-08 17:48:42,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:48:42,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:48:42,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:42,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:48:42,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:48:42,426 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:48:42,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:48:42,493 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2024-11-08 17:48:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:48:42,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-08 17:48:42,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:48:42,505 INFO L225 Difference]: With dead ends: 30 [2024-11-08 17:48:42,505 INFO L226 Difference]: Without dead ends: 14 [2024-11-08 17:48:42,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:48:42,517 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:48:42,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 19 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:48:42,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-08 17:48:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2024-11-08 17:48:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 17:48:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-11-08 17:48:42,558 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 6 [2024-11-08 17:48:42,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:48:42,559 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-11-08 17:48:42,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:48:42,559 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2024-11-08 17:48:42,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 17:48:42,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:48:42,560 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:42,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:48:42,561 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:48:42,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:42,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1954277712, now seen corresponding path program 1 times [2024-11-08 17:48:42,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:42,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985268504] [2024-11-08 17:48:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:42,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:42,803 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 17:48:42,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:42,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985268504] [2024-11-08 17:48:42,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985268504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:42,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195949122] [2024-11-08 17:48:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:42,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:42,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:42,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:42,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:48:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:42,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 17:48:42,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:43,045 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 17:48:43,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:48:43,268 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 17:48:43,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195949122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:48:43,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:48:43,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 7] total 12 [2024-11-08 17:48:43,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725148928] [2024-11-08 17:48:43,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:48:43,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:48:43,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:43,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:48:43,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:48:43,273 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 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 17:48:43,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:48:43,530 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2024-11-08 17:48:43,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:48:43,531 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 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) Word has length 10 [2024-11-08 17:48:43,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:48:43,533 INFO L225 Difference]: With dead ends: 34 [2024-11-08 17:48:43,533 INFO L226 Difference]: Without dead ends: 24 [2024-11-08 17:48:43,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:48:43,535 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:48:43,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 26 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:48:43,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-08 17:48:43,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2024-11-08 17:48:43,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 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 17:48:43,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-11-08 17:48:43,550 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 10 [2024-11-08 17:48:43,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:48:43,551 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-11-08 17:48:43,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 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 17:48:43,553 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-11-08 17:48:43,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 17:48:43,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:48:43,554 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:43,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:48:43,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:43,755 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:48:43,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:43,755 INFO L85 PathProgramCache]: Analyzing trace with hash -494919424, now seen corresponding path program 1 times [2024-11-08 17:48:43,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:43,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846634863] [2024-11-08 17:48:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:43,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:48:43,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:43,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846634863] [2024-11-08 17:48:43,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846634863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:43,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401641868] [2024-11-08 17:48:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:43,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:43,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:43,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:43,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:48:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:44,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 17:48:44,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:48:44,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:48:44,309 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:48:44,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401641868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:48:44,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:48:44,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2024-11-08 17:48:44,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955309324] [2024-11-08 17:48:44,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:48:44,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:48:44,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:44,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:48:44,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:48:44,313 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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 17:48:44,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:48:44,650 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2024-11-08 17:48:44,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:48:44,651 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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 17:48:44,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:48:44,652 INFO L225 Difference]: With dead ends: 63 [2024-11-08 17:48:44,652 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 17:48:44,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:48:44,655 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:48:44,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:48:44,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 17:48:44,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2024-11-08 17:48:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:48:44,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-11-08 17:48:44,669 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 18 [2024-11-08 17:48:44,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:48:44,670 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-11-08 17:48:44,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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 17:48:44,670 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-11-08 17:48:44,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 17:48:44,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:48:44,672 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:44,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:48:44,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:44,873 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:48:44,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:44,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1542706608, now seen corresponding path program 2 times [2024-11-08 17:48:44,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:44,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687490017] [2024-11-08 17:48:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:44,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:48:45,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:45,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687490017] [2024-11-08 17:48:45,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687490017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:45,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752045139] [2024-11-08 17:48:45,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:48:45,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:45,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:45,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:45,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:48:45,208 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:48:45,209 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:48:45,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 17:48:45,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:48:45,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:48:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:48:45,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752045139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:48:45,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:48:45,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 16 [2024-11-08 17:48:45,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240582224] [2024-11-08 17:48:45,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:48:45,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 17:48:45,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:45,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 17:48:45,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:48:45,597 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 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 17:48:46,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:48:46,238 INFO L93 Difference]: Finished difference Result 129 states and 159 transitions. [2024-11-08 17:48:46,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 17:48:46,240 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 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 26 [2024-11-08 17:48:46,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:48:46,243 INFO L225 Difference]: With dead ends: 129 [2024-11-08 17:48:46,244 INFO L226 Difference]: Without dead ends: 95 [2024-11-08 17:48:46,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2024-11-08 17:48:46,248 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:48:46,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 41 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:48:46,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-08 17:48:46,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 69. [2024-11-08 17:48:46,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 68 states have internal predecessors, (82), 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 17:48:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2024-11-08 17:48:46,289 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 26 [2024-11-08 17:48:46,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:48:46,290 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2024-11-08 17:48:46,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 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 17:48:46,290 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2024-11-08 17:48:46,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-08 17:48:46,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:48:46,292 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:46,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:48:46,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:46,497 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:48:46,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash 293188256, now seen corresponding path program 3 times [2024-11-08 17:48:46,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:46,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584297001] [2024-11-08 17:48:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 17:48:46,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:46,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584297001] [2024-11-08 17:48:46,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584297001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:46,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100792280] [2024-11-08 17:48:46,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:48:46,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:46,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:46,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:46,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:48:46,829 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-08 17:48:46,829 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:48:46,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 17:48:46,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 17:48:46,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:48:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 17:48:47,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100792280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:48:47,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:48:47,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-08 17:48:47,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77383661] [2024-11-08 17:48:47,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:48:47,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 17:48:47,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:47,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 17:48:47,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:48:47,260 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 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 17:48:52,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:48:56,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:49:00,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:49:04,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:49:08,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:49:12,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:49:16,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:49:20,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:49:24,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:49:25,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:49:25,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:49:25,642 INFO L93 Difference]: Finished difference Result 198 states and 256 transitions. [2024-11-08 17:49:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 17:49:25,643 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 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 34 [2024-11-08 17:49:25,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:49:25,645 INFO L225 Difference]: With dead ends: 198 [2024-11-08 17:49:25,645 INFO L226 Difference]: Without dead ends: 150 [2024-11-08 17:49:25,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=366, Invalid=626, Unknown=0, NotChecked=0, Total=992 [2024-11-08 17:49:25,648 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 58 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 14 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:49:25,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 38 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 171 Invalid, 9 Unknown, 0 Unchecked, 37.4s Time] [2024-11-08 17:49:25,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-08 17:49:25,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 67. [2024-11-08 17:49:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 66 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:49:25,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2024-11-08 17:49:25,668 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 34 [2024-11-08 17:49:25,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:49:25,668 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2024-11-08 17:49:25,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 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 17:49:25,669 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2024-11-08 17:49:25,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 17:49:25,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:49:25,670 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 9, 6, 1, 1, 1, 1, 1, 1] [2024-11-08 17:49:25,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:49:25,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:49:25,875 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:49:25,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:49:25,875 INFO L85 PathProgramCache]: Analyzing trace with hash 67210076, now seen corresponding path program 4 times [2024-11-08 17:49:25,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:49:25,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670773119] [2024-11-08 17:49:25,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:49:25,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:49:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:49:26,211 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 229 proven. 78 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-08 17:49:26,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:49:26,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670773119] [2024-11-08 17:49:26,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670773119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:49:26,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857098159] [2024-11-08 17:49:26,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:49:26,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:49:26,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:49:26,220 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:49:26,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:49:26,308 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:49:26,308 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:49:26,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 17:49:26,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:49:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 412 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-08 17:49:26,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:49:27,436 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 412 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-08 17:49:27,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857098159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:49:27,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:49:27,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 30 [2024-11-08 17:49:27,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112785539] [2024-11-08 17:49:27,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:49:27,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 17:49:27,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:49:27,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 17:49:27,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2024-11-08 17:49:27,446 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand has 30 states, 30 states have (on average 4.333333333333333) internal successors, (130), 30 states have internal predecessors, (130), 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 17:49:36,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:49:36,537 INFO L93 Difference]: Finished difference Result 1685 states and 2097 transitions. [2024-11-08 17:49:36,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2024-11-08 17:49:36,537 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.333333333333333) internal successors, (130), 30 states have internal predecessors, (130), 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 66 [2024-11-08 17:49:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:49:36,544 INFO L225 Difference]: With dead ends: 1685 [2024-11-08 17:49:36,545 INFO L226 Difference]: Without dead ends: 1641 [2024-11-08 17:49:36,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7408 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=3713, Invalid=17457, Unknown=0, NotChecked=0, Total=21170 [2024-11-08 17:49:36,554 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:49:36,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 132 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:49:36,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2024-11-08 17:49:36,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1287. [2024-11-08 17:49:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1286 states have (on average 1.244167962674961) internal successors, (1600), 1286 states have internal predecessors, (1600), 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 17:49:36,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1600 transitions. [2024-11-08 17:49:36,813 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1600 transitions. Word has length 66 [2024-11-08 17:49:36,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:49:36,814 INFO L471 AbstractCegarLoop]: Abstraction has 1287 states and 1600 transitions. [2024-11-08 17:49:36,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.333333333333333) internal successors, (130), 30 states have internal predecessors, (130), 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 17:49:36,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1600 transitions. [2024-11-08 17:49:36,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 17:49:36,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:49:36,820 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 10, 7, 1, 1, 1, 1, 1, 1] [2024-11-08 17:49:36,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 17:49:37,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 17:49:37,025 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:49:37,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:49:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1545080660, now seen corresponding path program 5 times [2024-11-08 17:49:37,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:49:37,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897797875] [2024-11-08 17:49:37,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:49:37,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:49:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:49:37,317 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 294 proven. 105 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-08 17:49:37,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:49:37,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897797875] [2024-11-08 17:49:37,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897797875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:49:37,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722366149] [2024-11-08 17:49:37,319 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:49:37,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:49:37,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:49:37,321 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:49:37,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:49:37,409 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-08 17:49:37,409 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:49:37,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 17:49:37,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:49:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 17:49:37,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:49:38,494 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 17:49:38,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722366149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:49:38,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:49:38,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 33 [2024-11-08 17:49:38,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684164041] [2024-11-08 17:49:38,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:49:38,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 17:49:38,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:49:38,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 17:49:38,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=873, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 17:49:38,502 INFO L87 Difference]: Start difference. First operand 1287 states and 1600 transitions. Second operand has 33 states, 33 states have (on average 4.363636363636363) internal successors, (144), 33 states have internal predecessors, (144), 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 17:49:51,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:49:51,045 INFO L93 Difference]: Finished difference Result 4475 states and 5584 transitions. [2024-11-08 17:49:51,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2024-11-08 17:49:51,046 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.363636363636363) internal successors, (144), 33 states have internal predecessors, (144), 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 74 [2024-11-08 17:49:51,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:49:51,061 INFO L225 Difference]: With dead ends: 4475 [2024-11-08 17:49:51,061 INFO L226 Difference]: Without dead ends: 3250 [2024-11-08 17:49:51,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11592 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=5464, Invalid=26042, Unknown=0, NotChecked=0, Total=31506 [2024-11-08 17:49:51,075 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:49:51,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 154 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:49:51,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2024-11-08 17:49:51,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 1577. [2024-11-08 17:49:51,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1576 states have (on average 1.2449238578680204) internal successors, (1962), 1576 states have internal predecessors, (1962), 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 17:49:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 1962 transitions. [2024-11-08 17:49:51,442 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 1962 transitions. Word has length 74 [2024-11-08 17:49:51,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:49:51,444 INFO L471 AbstractCegarLoop]: Abstraction has 1577 states and 1962 transitions. [2024-11-08 17:49:51,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.363636363636363) internal successors, (144), 33 states have internal predecessors, (144), 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 17:49:51,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 1962 transitions. [2024-11-08 17:49:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 17:49:51,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:49:51,449 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 9, 9, 1, 1, 1, 1, 1, 1] [2024-11-08 17:49:51,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:49:51,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 17:49:51,651 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:49:51,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:49:51,651 INFO L85 PathProgramCache]: Analyzing trace with hash 304623927, now seen corresponding path program 6 times [2024-11-08 17:49:51,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:49:51,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486016880] [2024-11-08 17:49:51,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:49:51,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:49:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:49:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 331 proven. 171 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-08 17:49:52,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:49:52,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486016880] [2024-11-08 17:49:52,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486016880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:49:52,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166620421] [2024-11-08 17:49:52,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:49:52,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:49:52,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:49:52,028 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:49:52,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:49:52,154 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-08 17:49:52,154 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:49:52,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 17:49:52,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:49:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 331 proven. 171 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-08 17:49:52,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:49:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 331 proven. 171 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-08 17:49:52,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166620421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:49:52,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:49:52,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 24 [2024-11-08 17:49:52,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523989805] [2024-11-08 17:49:52,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:49:52,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 17:49:52,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:49:52,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 17:49:52,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:49:52,957 INFO L87 Difference]: Start difference. First operand 1577 states and 1962 transitions. Second operand has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 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 17:49:56,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:49:56,211 INFO L93 Difference]: Finished difference Result 1663 states and 2068 transitions. [2024-11-08 17:49:56,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 17:49:56,212 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 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 17:49:56,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:49:56,213 INFO L225 Difference]: With dead ends: 1663 [2024-11-08 17:49:56,214 INFO L226 Difference]: Without dead ends: 123 [2024-11-08 17:49:56,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=393, Invalid=663, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 17:49:56,216 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:49:56,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 55 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:49:56,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-08 17:49:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-08 17:49:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0819672131147542) internal successors, (132), 122 states have internal predecessors, (132), 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 17:49:56,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2024-11-08 17:49:56,257 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 78 [2024-11-08 17:49:56,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:49:56,259 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2024-11-08 17:49:56,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 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 17:49:56,259 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2024-11-08 17:49:56,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-08 17:49:56,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:49:56,261 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 20, 9, 1, 1, 1, 1, 1, 1] [2024-11-08 17:49:56,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 17:49:56,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 17:49:56,465 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:49:56,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:49:56,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1736462042, now seen corresponding path program 7 times [2024-11-08 17:49:56,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:49:56,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180870647] [2024-11-08 17:49:56,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:49:56,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:49:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:49:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 705 proven. 820 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-08 17:49:57,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:49:57,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180870647] [2024-11-08 17:49:57,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180870647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:49:57,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853970486] [2024-11-08 17:49:57,387 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 17:49:57,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:49:57,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:49:57,389 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:49:57,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:49:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:49:57,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-08 17:49:57,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:49:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1619 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 17:49:58,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:50:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1619 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 17:50:00,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853970486] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:50:00,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:50:00,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 24] total 66 [2024-11-08 17:50:00,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063377351] [2024-11-08 17:50:00,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:50:00,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-08 17:50:00,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:00,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-08 17:50:00,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=580, Invalid=3710, Unknown=0, NotChecked=0, Total=4290 [2024-11-08 17:50:00,126 INFO L87 Difference]: Start difference. First operand 123 states and 132 transitions. Second operand has 66 states, 66 states have (on average 4.2727272727272725) internal successors, (282), 66 states have internal predecessors, (282), 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 17:51:35,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:35,705 INFO L93 Difference]: Finished difference Result 5952 states and 7436 transitions. [2024-11-08 17:51:35,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2024-11-08 17:51:35,706 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.2727272727272725) internal successors, (282), 66 states have internal predecessors, (282), 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 122 [2024-11-08 17:51:35,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:35,730 INFO L225 Difference]: With dead ends: 5952 [2024-11-08 17:51:35,731 INFO L226 Difference]: Without dead ends: 5897 [2024-11-08 17:51:35,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38814 ImplicationChecksByTransitivity, 92.8s TimeCoverageRelationStatistics Valid=23392, Invalid=77414, Unknown=0, NotChecked=0, Total=100806 [2024-11-08 17:51:35,746 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 374 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 3313 mSolverCounterSat, 1046 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 4359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1046 IncrementalHoareTripleChecker+Valid, 3313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:35,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 190 Invalid, 4359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1046 Valid, 3313 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-08 17:51:35,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5897 states. [2024-11-08 17:51:36,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5897 to 5283. [2024-11-08 17:51:36,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5283 states, 5282 states have (on average 1.252177205603938) internal successors, (6614), 5282 states have internal predecessors, (6614), 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 17:51:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5283 states to 5283 states and 6614 transitions. [2024-11-08 17:51:36,652 INFO L78 Accepts]: Start accepts. Automaton has 5283 states and 6614 transitions. Word has length 122 [2024-11-08 17:51:36,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:36,652 INFO L471 AbstractCegarLoop]: Abstraction has 5283 states and 6614 transitions. [2024-11-08 17:51:36,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.2727272727272725) internal successors, (282), 66 states have internal predecessors, (282), 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 17:51:36,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5283 states and 6614 transitions. [2024-11-08 17:51:36,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-08 17:51:36,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:36,655 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 21, 10, 1, 1, 1, 1, 1, 1] [2024-11-08 17:51:36,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 17:51:36,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-08 17:51:36,856 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:36,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:36,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1012771286, now seen corresponding path program 8 times [2024-11-08 17:51:36,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:36,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447614689] [2024-11-08 17:51:36,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:36,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 826 proven. 903 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-08 17:51:37,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:37,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447614689] [2024-11-08 17:51:37,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447614689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:51:37,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778085820] [2024-11-08 17:51:37,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:51:37,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:51:37,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:51:37,885 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:51:37,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:51:37,976 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:51:37,977 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:51:37,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-08 17:51:37,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:51:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1854 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 17:51:39,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:51:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1853 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-08 17:51:41,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778085820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:51:41,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:51:41,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 36, 25] total 80 [2024-11-08 17:51:41,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152045085] [2024-11-08 17:51:41,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:51:41,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-08 17:51:41,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:41,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-08 17:51:41,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=928, Invalid=5392, Unknown=0, NotChecked=0, Total=6320 [2024-11-08 17:51:41,535 INFO L87 Difference]: Start difference. First operand 5283 states and 6614 transitions. Second operand has 80 states, 80 states have (on average 3.7125) internal successors, (297), 80 states have internal predecessors, (297), 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 17:53:38,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:53:38,536 INFO L93 Difference]: Finished difference Result 16418 states and 20584 transitions. [2024-11-08 17:53:38,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 300 states. [2024-11-08 17:53:38,536 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.7125) internal successors, (297), 80 states have internal predecessors, (297), 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 130 [2024-11-08 17:53:38,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:53:38,570 INFO L225 Difference]: With dead ends: 16418 [2024-11-08 17:53:38,571 INFO L226 Difference]: Without dead ends: 11210 [2024-11-08 17:53:38,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43431 ImplicationChecksByTransitivity, 112.6s TimeCoverageRelationStatistics Valid=25235, Invalid=85321, Unknown=0, NotChecked=0, Total=110556 [2024-11-08 17:53:38,584 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 377 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 4063 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 5186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 4063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:53:38,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 244 Invalid, 5186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1123 Valid, 4063 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-08 17:53:38,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11210 states. [2024-11-08 17:53:39,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11210 to 5409. [2024-11-08 17:53:39,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5409 states, 5408 states have (on average 1.2520340236686391) internal successors, (6771), 5408 states have internal predecessors, (6771), 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 17:53:39,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5409 states to 5409 states and 6771 transitions. [2024-11-08 17:53:39,535 INFO L78 Accepts]: Start accepts. Automaton has 5409 states and 6771 transitions. Word has length 130 [2024-11-08 17:53:39,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:53:39,536 INFO L471 AbstractCegarLoop]: Abstraction has 5409 states and 6771 transitions. [2024-11-08 17:53:39,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.7125) internal successors, (297), 80 states have internal predecessors, (297), 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 17:53:39,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5409 states and 6771 transitions. [2024-11-08 17:53:39,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-08 17:53:39,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:53:39,538 INFO L215 NwaCegarLoop]: trace histogram [33, 33, 33, 22, 11, 1, 1, 1, 1, 1, 1] [2024-11-08 17:53:39,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 17:53:39,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:53:39,743 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:53:39,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:53:39,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1580475270, now seen corresponding path program 9 times [2024-11-08 17:53:39,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:53:39,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630228638] [2024-11-08 17:53:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:53:39,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:53:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:53:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 955 proven. 990 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-08 17:53:40,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:53:40,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630228638] [2024-11-08 17:53:40,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630228638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:53:40,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772808089] [2024-11-08 17:53:40,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:53:40,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:53:40,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:53:40,767 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:53:40,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:53:40,895 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-08 17:53:40,896 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:53:40,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 17:53:40,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:53:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 1000 proven. 242 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2024-11-08 17:53:41,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:53:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 1000 proven. 242 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2024-11-08 17:53:42,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772808089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:53:42,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:53:42,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 15] total 51 [2024-11-08 17:53:42,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120095721] [2024-11-08 17:53:42,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:53:42,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-08 17:53:42,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:53:42,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-08 17:53:42,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=798, Invalid=1752, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 17:53:42,486 INFO L87 Difference]: Start difference. First operand 5409 states and 6771 transitions. Second operand has 51 states, 51 states have (on average 3.9215686274509802) internal successors, (200), 51 states have internal predecessors, (200), 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 17:53:59,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:54:03,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:54:07,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:54:11,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:54:15,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:54:19,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:54:23,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:54:27,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:54:31,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:54:35,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:54:39,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:54:45,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:54:49,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:54:53,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:54:57,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:01,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:05,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:09,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:13,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:17,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:21,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:26,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:30,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:34,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:38,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:42,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:46,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:50,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:54,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:55:58,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:56:02,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:56:08,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:56:12,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:56:16,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:56:20,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:56:24,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:56:28,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:56:32,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:56:36,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:56:40,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:56:44,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:56:48,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:56:52,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:56:56,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:57:00,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:57:04,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:57:08,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:57:12,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:57:16,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:57:20,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:57:24,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:57:28,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:57:32,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:57:36,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:57:40,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:57:44,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:57:48,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:57:56,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:00,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:04,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:08,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:12,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:16,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:20,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:24,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:28,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:32,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:36,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:40,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:44,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:47,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:51,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:55,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:58:59,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:59:03,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:59:07,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:59:11,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:59:15,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:59:19,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:59:23,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:59:27,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:59:31,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:59:42,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:59:46,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:59:50,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:59:54,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:59:58,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:00:02,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:00:06,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:00:10,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:00:14,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:00:18,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:00:22,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:00:26,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:00:31,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:00:36,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:00:40,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:00:44,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:00:48,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:00:57,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:01:01,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:01:05,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:01:09,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:01:13,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:01:17,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:01:22,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:01:26,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:01:30,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:01:34,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:01:39,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:01:45,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:01:49,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:01:53,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:01:57,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:02:01,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:02:05,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:02:09,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:02:13,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:02:20,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:02:24,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:02:28,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:02:32,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:02:37,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:02:41,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:02:45,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:02:51,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:02:55,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:02:59,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:03:03,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:03:07,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:03:13,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:03:17,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:03:21,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 18:03:22,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:03:22,874 INFO L93 Difference]: Finished difference Result 20856 states and 26437 transitions. [2024-11-08 18:03:22,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-11-08 18:03:22,875 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.9215686274509802) internal successors, (200), 51 states have internal predecessors, (200), 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 138 [2024-11-08 18:03:22,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:03:22,929 INFO L225 Difference]: With dead ends: 20856 [2024-11-08 18:03:22,929 INFO L226 Difference]: Without dead ends: 15540 [2024-11-08 18:03:22,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 281 SyntacticMatches, 7 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 47.5s TimeCoverageRelationStatistics Valid=3749, Invalid=6963, Unknown=0, NotChecked=0, Total=10712 [2024-11-08 18:03:22,940 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 221 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 128 mSolverCounterUnsat, 131 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 531.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 131 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 532.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:03:22,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 58 Invalid, 2137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1878 Invalid, 131 Unknown, 0 Unchecked, 532.0s Time] [2024-11-08 18:03:22,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15540 states. [2024-11-08 18:03:23,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15540 to 203. [2024-11-08 18:03:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.1287128712871286) internal successors, (228), 202 states have internal predecessors, (228), 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 18:03:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 228 transitions. [2024-11-08 18:03:23,178 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 228 transitions. Word has length 138 [2024-11-08 18:03:23,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:03:23,178 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 228 transitions. [2024-11-08 18:03:23,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.9215686274509802) internal successors, (200), 51 states have internal predecessors, (200), 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 18:03:23,179 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 228 transitions. [2024-11-08 18:03:23,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-08 18:03:23,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:03:23,181 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 25, 24, 1, 1, 1, 1, 1, 1] [2024-11-08 18:03:23,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 18:03:23,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:03:23,386 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:03:23,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:03:23,387 INFO L85 PathProgramCache]: Analyzing trace with hash -134462610, now seen corresponding path program 10 times [2024-11-08 18:03:23,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:03:23,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176581553] [2024-11-08 18:03:23,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:03:23,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:03:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:03:24,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 2425 proven. 1176 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2024-11-08 18:03:24,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:03:24,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176581553] [2024-11-08 18:03:24,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176581553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:03:24,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311826581] [2024-11-08 18:03:24,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:03:24,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:03:24,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:03:24,898 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:03:24,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65520122-052e-460d-808d-0c9868f8489c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 18:03:25,026 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:03:25,026 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:03:25,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-08 18:03:25,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:03:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4658 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-08 18:03:26,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:03:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4658 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-08 18:03:30,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311826581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:03:30,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:03:30,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29, 29] total 80 [2024-11-08 18:03:30,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682068414] [2024-11-08 18:03:30,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:03:30,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-08 18:03:30,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:03:30,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-08 18:03:30,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=832, Invalid=5488, Unknown=0, NotChecked=0, Total=6320 [2024-11-08 18:03:30,239 INFO L87 Difference]: Start difference. First operand 203 states and 228 transitions. Second operand has 80 states, 80 states have (on average 4.575) internal successors, (366), 80 states have internal predecessors, (366), 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)