./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0af4734225f8d624097b2f71d989da577cf3312ce2c1d0203423496ca1c15566 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 19:50:56,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:50:56,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:50:56,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:50:56,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:50:56,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:50:56,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:50:56,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:50:56,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:50:57,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:50:57,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:50:57,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:50:57,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:50:57,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:50:57,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:50:57,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:50:57,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:50:57,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:50:57,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:50:57,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:50:57,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:50:57,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:50:57,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:50:57,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:50:57,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:50:57,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:50:57,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:50:57,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:50:57,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:50:57,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:50:57,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:50:57,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:50:57,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:50:57,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:50:57,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:50:57,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:50:57,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:50:57,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:50:57,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:50:57,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:50:57,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:50:57,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 19:50:57,058 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:50:57,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:50:57,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:50:57,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:50:57,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:50:57,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:50:57,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:50:57,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:50:57,061 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:50:57,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:50:57,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:50:57,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:50:57,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:50:57,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:50:57,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:50:57,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:50:57,064 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:50:57,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:50:57,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:50:57,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:50:57,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:50:57,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:50:57,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:50:57,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:50:57,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:50:57,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:50:57,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:50:57,067 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:50:57,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:50:57,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:50:57,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0af4734225f8d624097b2f71d989da577cf3312ce2c1d0203423496ca1c15566 [2022-11-02 19:50:57,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:50:57,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:50:57,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:50:57,404 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:50:57,409 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:50:57,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c [2022-11-02 19:50:57,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/data/e26e7f858/42c33539b5f446478b386431e25e2c5f/FLAGa8052becc [2022-11-02 19:50:58,063 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:50:58,064 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c [2022-11-02 19:50:58,078 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/data/e26e7f858/42c33539b5f446478b386431e25e2c5f/FLAGa8052becc [2022-11-02 19:50:58,419 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/data/e26e7f858/42c33539b5f446478b386431e25e2c5f [2022-11-02 19:50:58,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:50:58,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:50:58,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:50:58,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:50:58,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:50:58,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:50:58" (1/1) ... [2022-11-02 19:50:58,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dffa628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:58, skipping insertion in model container [2022-11-02 19:50:58,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:50:58" (1/1) ... [2022-11-02 19:50:58,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:50:58,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:50:58,685 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c[1120,1133] [2022-11-02 19:50:58,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:50:58,875 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:50:58,889 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c[1120,1133] [2022-11-02 19:50:59,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:50:59,039 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:50:59,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:59 WrapperNode [2022-11-02 19:50:59,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:50:59,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:50:59,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:50:59,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:50:59,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:59" (1/1) ... [2022-11-02 19:50:59,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:59" (1/1) ... [2022-11-02 19:50:59,171 INFO L138 Inliner]: procedures = 11, calls = 5, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 405 [2022-11-02 19:50:59,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:50:59,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:50:59,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:50:59,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:50:59,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:59" (1/1) ... [2022-11-02 19:50:59,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:59" (1/1) ... [2022-11-02 19:50:59,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:59" (1/1) ... [2022-11-02 19:50:59,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:59" (1/1) ... [2022-11-02 19:50:59,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:59" (1/1) ... [2022-11-02 19:50:59,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:59" (1/1) ... [2022-11-02 19:50:59,240 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:59" (1/1) ... [2022-11-02 19:50:59,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:59" (1/1) ... [2022-11-02 19:50:59,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:50:59,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:50:59,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:50:59,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:50:59,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:59" (1/1) ... [2022-11-02 19:50:59,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:50:59,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:50:59,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:50:59,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:50:59,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:50:59,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:50:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 19:50:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 19:50:59,588 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:50:59,604 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:51:01,520 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:51:01,531 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:51:01,532 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:51:01,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:51:01 BoogieIcfgContainer [2022-11-02 19:51:01,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:51:01,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:51:01,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:51:01,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:51:01,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:50:58" (1/3) ... [2022-11-02 19:51:01,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5898edb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:51:01, skipping insertion in model container [2022-11-02 19:51:01,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:50:59" (2/3) ... [2022-11-02 19:51:01,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5898edb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:51:01, skipping insertion in model container [2022-11-02 19:51:01,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:51:01" (3/3) ... [2022-11-02 19:51:01,551 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_analog_estimation_convergence.c [2022-11-02 19:51:01,576 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:51:01,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:51:01,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:51:01,672 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58658ecc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:51:01,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:51:01,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 37 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 19:51:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 19:51:01,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:01,698 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:51:01,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:01,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:01,708 INFO L85 PathProgramCache]: Analyzing trace with hash 637573395, now seen corresponding path program 1 times [2022-11-02 19:51:01,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:51:01,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186361921] [2022-11-02 19:51:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:01,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:51:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:02,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 19:51:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:02,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 19:51:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 19:51:02,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:51:02,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186361921] [2022-11-02 19:51:02,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186361921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:51:02,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:51:02,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:51:02,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840438705] [2022-11-02 19:51:02,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:02,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 19:51:02,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:51:02,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 19:51:02,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 19:51:02,305 INFO L87 Difference]: Start difference. First operand has 41 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 37 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 19:51:02,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:02,348 INFO L93 Difference]: Finished difference Result 76 states and 109 transitions. [2022-11-02 19:51:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 19:51:02,358 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-11-02 19:51:02,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:02,366 INFO L225 Difference]: With dead ends: 76 [2022-11-02 19:51:02,367 INFO L226 Difference]: Without dead ends: 37 [2022-11-02 19:51:02,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 19:51:02,380 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:02,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:51:02,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-02 19:51:02,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-02 19:51:02,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 19:51:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2022-11-02 19:51:02,436 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 23 [2022-11-02 19:51:02,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:02,437 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2022-11-02 19:51:02,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 19:51:02,438 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2022-11-02 19:51:02,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 19:51:02,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:02,440 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:51:02,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:51:02,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:02,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1098405873, now seen corresponding path program 1 times [2022-11-02 19:51:02,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:51:02,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886029177] [2022-11-02 19:51:02,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:02,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:51:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:51:05,326 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 19:51:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:51:08,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 19:51:08,613 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 19:51:08,615 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 19:51:08,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:51:08,623 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 19:51:08,628 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 19:51:08,741 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 19:51:08,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 07:51:08 BoogieIcfgContainer [2022-11-02 19:51:08,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 19:51:08,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 19:51:08,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 19:51:08,773 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 19:51:08,773 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:51:01" (3/4) ... [2022-11-02 19:51:08,777 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 19:51:08,779 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 19:51:08,780 INFO L158 Benchmark]: Toolchain (without parser) took 10351.79ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 80.9MB in the beginning and 185.9MB in the end (delta: -105.0MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. [2022-11-02 19:51:08,782 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 96.5MB. Free memory was 66.2MB in the beginning and 66.2MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:51:08,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 608.32ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 83.1MB in the end (delta: -2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 19:51:08,786 INFO L158 Benchmark]: Boogie Procedure Inliner took 131.14ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 75.9MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 19:51:08,787 INFO L158 Benchmark]: Boogie Preprocessor took 79.56ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 72.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 19:51:08,788 INFO L158 Benchmark]: RCFGBuilder took 2281.49ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 72.2MB in the beginning and 76.9MB in the end (delta: -4.7MB). Peak memory consumption was 78.5MB. Max. memory is 16.1GB. [2022-11-02 19:51:08,792 INFO L158 Benchmark]: TraceAbstraction took 7231.61ms. Allocated memory was 155.2MB in the beginning and 268.4MB in the end (delta: 113.2MB). Free memory was 75.9MB in the beginning and 185.9MB in the end (delta: -110.0MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. [2022-11-02 19:51:08,793 INFO L158 Benchmark]: Witness Printer took 7.17ms. Allocated memory is still 268.4MB. Free memory is still 185.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:51:08,800 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 96.5MB. Free memory was 66.2MB in the beginning and 66.2MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 608.32ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 83.1MB in the end (delta: -2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 131.14ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 75.9MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.56ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 72.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2281.49ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 72.2MB in the beginning and 76.9MB in the end (delta: -4.7MB). Peak memory consumption was 78.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7231.61ms. Allocated memory was 155.2MB in the beginning and 268.4MB in the end (delta: 113.2MB). Free memory was 75.9MB in the beginning and 185.9MB in the end (delta: -110.0MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. * Witness Printer took 7.17ms. Allocated memory is still 268.4MB. Free memory is still 185.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 168, overapproximation of bitwiseAnd at line 294, overapproximation of bitwiseComplement at line 289, overapproximation of bitwiseXOr at line 281. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 31); [L29] const SORT_9 msb_SORT_9 = (SORT_9)1 << (31 - 1); [L31] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 16); [L32] const SORT_11 msb_SORT_11 = (SORT_11)1 << (16 - 1); [L34] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 8); [L35] const SORT_12 msb_SORT_12 = (SORT_12)1 << (8 - 1); [L37] const SORT_20 mask_SORT_20 = (SORT_20)-1 >> (sizeof(SORT_20) * 8 - 32); [L38] const SORT_20 msb_SORT_20 = (SORT_20)1 << (32 - 1); [L40] const SORT_23 mask_SORT_23 = (SORT_23)-1 >> (sizeof(SORT_23) * 8 - 17); [L41] const SORT_23 msb_SORT_23 = (SORT_23)1 << (17 - 1); [L43] const SORT_26 mask_SORT_26 = (SORT_26)-1 >> (sizeof(SORT_26) * 8 - 18); [L44] const SORT_26 msb_SORT_26 = (SORT_26)1 << (18 - 1); [L46] const SORT_29 mask_SORT_29 = (SORT_29)-1 >> (sizeof(SORT_29) * 8 - 19); [L47] const SORT_29 msb_SORT_29 = (SORT_29)1 << (19 - 1); [L49] const SORT_32 mask_SORT_32 = (SORT_32)-1 >> (sizeof(SORT_32) * 8 - 20); [L50] const SORT_32 msb_SORT_32 = (SORT_32)1 << (20 - 1); [L52] const SORT_35 mask_SORT_35 = (SORT_35)-1 >> (sizeof(SORT_35) * 8 - 21); [L53] const SORT_35 msb_SORT_35 = (SORT_35)1 << (21 - 1); [L55] const SORT_38 mask_SORT_38 = (SORT_38)-1 >> (sizeof(SORT_38) * 8 - 22); [L56] const SORT_38 msb_SORT_38 = (SORT_38)1 << (22 - 1); [L58] const SORT_41 mask_SORT_41 = (SORT_41)-1 >> (sizeof(SORT_41) * 8 - 23); [L59] const SORT_41 msb_SORT_41 = (SORT_41)1 << (23 - 1); [L61] const SORT_44 mask_SORT_44 = (SORT_44)-1 >> (sizeof(SORT_44) * 8 - 24); [L62] const SORT_44 msb_SORT_44 = (SORT_44)1 << (24 - 1); [L64] const SORT_47 mask_SORT_47 = (SORT_47)-1 >> (sizeof(SORT_47) * 8 - 25); [L65] const SORT_47 msb_SORT_47 = (SORT_47)1 << (25 - 1); [L67] const SORT_50 mask_SORT_50 = (SORT_50)-1 >> (sizeof(SORT_50) * 8 - 26); [L68] const SORT_50 msb_SORT_50 = (SORT_50)1 << (26 - 1); [L70] const SORT_53 mask_SORT_53 = (SORT_53)-1 >> (sizeof(SORT_53) * 8 - 27); [L71] const SORT_53 msb_SORT_53 = (SORT_53)1 << (27 - 1); [L73] const SORT_56 mask_SORT_56 = (SORT_56)-1 >> (sizeof(SORT_56) * 8 - 28); [L74] const SORT_56 msb_SORT_56 = (SORT_56)1 << (28 - 1); [L76] const SORT_59 mask_SORT_59 = (SORT_59)-1 >> (sizeof(SORT_59) * 8 - 29); [L77] const SORT_59 msb_SORT_59 = (SORT_59)1 << (29 - 1); [L79] const SORT_62 mask_SORT_62 = (SORT_62)-1 >> (sizeof(SORT_62) * 8 - 30); [L80] const SORT_62 msb_SORT_62 = (SORT_62)1 << (30 - 1); [L82] const SORT_72 mask_SORT_72 = (SORT_72)-1 >> (sizeof(SORT_72) * 8 - 3); [L83] const SORT_72 msb_SORT_72 = (SORT_72)1 << (3 - 1); [L85] const SORT_96 mask_SORT_96 = (SORT_96)-1 >> (sizeof(SORT_96) * 8 - 4); [L86] const SORT_96 msb_SORT_96 = (SORT_96)1 << (4 - 1); [L88] const SORT_101 mask_SORT_101 = (SORT_101)-1 >> (sizeof(SORT_101) * 8 - 6); [L89] const SORT_101 msb_SORT_101 = (SORT_101)1 << (6 - 1); [L91] const SORT_1 var_7 = 0; [L92] const SORT_1 var_8 = 1; [L93] const SORT_9 var_10 = 0; [L94] const SORT_12 var_13 = 0; [L95] const SORT_12 var_14 = 200; [L96] const SORT_72 var_73 = 5; [L97] const SORT_11 var_75 = 0; [L98] const SORT_11 var_108 = 200; [L99] const SORT_72 var_113 = 4; [L100] const SORT_72 var_116 = 6; [L101] const SORT_96 var_120 = 9; [L102] const SORT_72 var_137 = 0; [L103] const SORT_96 var_140 = 0; [L105] SORT_1 input_2; [L106] SORT_1 input_3; [L107] SORT_1 input_4; [L109] SORT_1 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] SORT_11 state_17 = __VERIFIER_nondet_ushort() & mask_SORT_11; [L111] SORT_11 state_76 = __VERIFIER_nondet_ushort() & mask_SORT_11; [L112] SORT_96 state_97 = __VERIFIER_nondet_uchar() & mask_SORT_96; [L113] SORT_96 state_100 = __VERIFIER_nondet_uchar() & mask_SORT_96; [L115] SORT_11 init_77_arg_1 = var_75; [L116] state_76 = init_77_arg_1 VAL [init_77_arg_1=0, mask_SORT_1=1, mask_SORT_101=63, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_20=4294967295, mask_SORT_23=4294967295, mask_SORT_26=4294967295, mask_SORT_29=4294967295, mask_SORT_32=4294967295, mask_SORT_35=4294967295, mask_SORT_38=4294967295, mask_SORT_41=4294967295, mask_SORT_44=4294967295, mask_SORT_47=4294967295, mask_SORT_50=4294967295, mask_SORT_53=4294967295, mask_SORT_56=4294967295, mask_SORT_59=4294967295, mask_SORT_62=4294967295, mask_SORT_72=7, mask_SORT_9=4294967295, mask_SORT_96=15, msb_SORT_1=1, msb_SORT_101=32, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_9=1073741824, msb_SORT_96=8, state_100=15, state_17=1, state_5=0, state_76=0, state_97=5, var_10=0, var_108=200, var_113=4, var_116=6, var_120=9, var_13=0, var_137=0, var_14=200, var_140=0, var_7=0, var_73=5, var_75=0, var_8=1] [L119] input_2 = __VERIFIER_nondet_uchar() [L120] input_3 = __VERIFIER_nondet_uchar() [L121] input_3 = input_3 & mask_SORT_1 [L122] input_4 = __VERIFIER_nondet_uchar() [L123] input_4 = input_4 & mask_SORT_1 [L125] SORT_1 var_84_arg_0 = state_5; [L126] SORT_1 var_84 = ~var_84_arg_0; [L127] SORT_1 var_85_arg_0 = var_84; [L128] SORT_1 var_85 = ~var_85_arg_0; [L129] SORT_1 var_86_arg_0 = state_5; [L130] SORT_1 var_86_arg_1 = var_85; [L131] SORT_1 var_86 = var_86_arg_0 | var_86_arg_1; [L132] var_86 = var_86 & mask_SORT_1 [L133] SORT_1 constr_87_arg_0 = var_86; VAL [constr_87_arg_0=1, init_77_arg_1=0, input_2=3, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_101=63, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_20=4294967295, mask_SORT_23=4294967295, mask_SORT_26=4294967295, mask_SORT_29=4294967295, mask_SORT_32=4294967295, mask_SORT_35=4294967295, mask_SORT_38=4294967295, mask_SORT_41=4294967295, mask_SORT_44=4294967295, mask_SORT_47=4294967295, mask_SORT_50=4294967295, mask_SORT_53=4294967295, mask_SORT_56=4294967295, mask_SORT_59=4294967295, mask_SORT_62=4294967295, mask_SORT_72=7, mask_SORT_9=4294967295, mask_SORT_96=15, msb_SORT_1=1, msb_SORT_101=32, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_9=1073741824, msb_SORT_96=8, state_100=15, state_17=1, state_5=0, state_76=0, state_97=5, var_10=0, var_108=200, var_113=4, var_116=6, var_120=9, var_13=0, var_137=0, var_14=200, var_140=0, var_7=0, var_73=5, var_75=0, var_8=1, var_84=6, var_84_arg_0=0, var_85=1, var_85_arg_0=6, var_86=1, var_86_arg_0=0, var_86_arg_1=1] [L134] CALL assume_abort_if_not(constr_87_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L134] RET assume_abort_if_not(constr_87_arg_0) VAL [constr_87_arg_0=1, init_77_arg_1=0, input_2=3, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_101=63, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_20=4294967295, mask_SORT_23=4294967295, mask_SORT_26=4294967295, mask_SORT_29=4294967295, mask_SORT_32=4294967295, mask_SORT_35=4294967295, mask_SORT_38=4294967295, mask_SORT_41=4294967295, mask_SORT_44=4294967295, mask_SORT_47=4294967295, mask_SORT_50=4294967295, mask_SORT_53=4294967295, mask_SORT_56=4294967295, mask_SORT_59=4294967295, mask_SORT_62=4294967295, mask_SORT_72=7, mask_SORT_9=4294967295, mask_SORT_96=15, msb_SORT_1=1, msb_SORT_101=32, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_9=1073741824, msb_SORT_96=8, state_100=15, state_17=1, state_5=0, state_76=0, state_97=5, var_10=0, var_108=200, var_113=4, var_116=6, var_120=9, var_13=0, var_137=0, var_14=200, var_140=0, var_7=0, var_73=5, var_75=0, var_8=1, var_84=6, var_84_arg_0=0, var_85=1, var_85_arg_0=6, var_86=1, var_86_arg_0=0, var_86_arg_1=1] [L135] SORT_1 var_88_arg_0 = var_8; [L136] var_88_arg_0 = var_88_arg_0 & mask_SORT_1 [L137] SORT_11 var_88 = var_88_arg_0; [L138] SORT_11 var_89_arg_0 = state_76; [L139] SORT_11 var_89_arg_1 = var_88; [L140] SORT_1 var_89 = var_89_arg_0 <= var_89_arg_1; [L141] SORT_1 var_90_arg_0 = input_4; [L142] SORT_1 var_90_arg_1 = var_89; [L143] SORT_1 var_90 = var_90_arg_0 ^ var_90_arg_1; [L144] SORT_1 var_91_arg_0 = var_90; [L145] SORT_1 var_91 = ~var_91_arg_0; [L146] SORT_1 var_92_arg_0 = var_90; [L147] SORT_1 var_92 = ~var_92_arg_0; [L148] SORT_1 var_93_arg_0 = var_91; [L149] SORT_1 var_93_arg_1 = var_92; [L150] SORT_1 var_93 = var_93_arg_0 | var_93_arg_1; [L151] var_93 = var_93 & mask_SORT_1 [L152] SORT_1 constr_94_arg_0 = var_93; VAL [constr_87_arg_0=1, constr_94_arg_0=1, init_77_arg_1=0, input_2=3, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_101=63, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_20=4294967295, mask_SORT_23=4294967295, mask_SORT_26=4294967295, mask_SORT_29=4294967295, mask_SORT_32=4294967295, mask_SORT_35=4294967295, mask_SORT_38=4294967295, mask_SORT_41=4294967295, mask_SORT_44=4294967295, mask_SORT_47=4294967295, mask_SORT_50=4294967295, mask_SORT_53=4294967295, mask_SORT_56=4294967295, mask_SORT_59=4294967295, mask_SORT_62=4294967295, mask_SORT_72=7, mask_SORT_9=4294967295, mask_SORT_96=15, msb_SORT_1=1, msb_SORT_101=32, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_9=1073741824, msb_SORT_96=8, state_100=15, state_17=1, state_5=0, state_76=0, state_97=5, var_10=0, var_108=200, var_113=4, var_116=6, var_120=9, var_13=0, var_137=0, var_14=200, var_140=0, var_7=0, var_73=5, var_75=0, var_8=1, var_84=6, var_84_arg_0=0, var_85=1, var_85_arg_0=6, var_86=1, var_86_arg_0=0, var_86_arg_1=1, var_88=1, var_88_arg_0=1, var_89=1, var_89_arg_0=0, var_89_arg_1=1, var_90=1, var_90_arg_0=0, var_90_arg_1=1, var_91=0, var_91_arg_0=1, var_92=1, var_92_arg_0=1, var_93=1, var_93_arg_0=0, var_93_arg_1=1] [L153] CALL assume_abort_if_not(constr_94_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L153] RET assume_abort_if_not(constr_94_arg_0) VAL [constr_87_arg_0=1, constr_94_arg_0=1, init_77_arg_1=0, input_2=3, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_101=63, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_20=4294967295, mask_SORT_23=4294967295, mask_SORT_26=4294967295, mask_SORT_29=4294967295, mask_SORT_32=4294967295, mask_SORT_35=4294967295, mask_SORT_38=4294967295, mask_SORT_41=4294967295, mask_SORT_44=4294967295, mask_SORT_47=4294967295, mask_SORT_50=4294967295, mask_SORT_53=4294967295, mask_SORT_56=4294967295, mask_SORT_59=4294967295, mask_SORT_62=4294967295, mask_SORT_72=7, mask_SORT_9=4294967295, mask_SORT_96=15, msb_SORT_1=1, msb_SORT_101=32, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_9=1073741824, msb_SORT_96=8, state_100=15, state_17=1, state_5=0, state_76=0, state_97=5, var_10=0, var_108=200, var_113=4, var_116=6, var_120=9, var_13=0, var_137=0, var_14=200, var_140=0, var_7=0, var_73=5, var_75=0, var_8=1, var_84=6, var_84_arg_0=0, var_85=1, var_85_arg_0=6, var_86=1, var_86_arg_0=0, var_86_arg_1=1, var_88=1, var_88_arg_0=1, var_89=1, var_89_arg_0=0, var_89_arg_1=1, var_90=1, var_90_arg_0=0, var_90_arg_1=1, var_91=0, var_91_arg_0=1, var_92=1, var_92_arg_0=1, var_93=1, var_93_arg_0=0, var_93_arg_1=1] [L155] SORT_72 var_74_arg_0 = var_73; [L156] var_74_arg_0 = var_74_arg_0 & mask_SORT_72 [L157] SORT_11 var_74 = var_74_arg_0; [L158] SORT_11 var_78_arg_0 = var_74; [L159] SORT_11 var_78_arg_1 = state_76; [L160] SORT_1 var_78 = var_78_arg_0 < var_78_arg_1; [L161] SORT_1 var_15_arg_0 = input_3; [L162] SORT_12 var_15_arg_1 = var_14; [L163] SORT_12 var_15_arg_2 = var_13; VAL [constr_87_arg_0=1, constr_94_arg_0=1, init_77_arg_1=0, input_2=3, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_101=63, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_20=4294967295, mask_SORT_23=4294967295, mask_SORT_26=4294967295, mask_SORT_29=4294967295, mask_SORT_32=4294967295, mask_SORT_35=4294967295, mask_SORT_38=4294967295, mask_SORT_41=4294967295, mask_SORT_44=4294967295, mask_SORT_47=4294967295, mask_SORT_50=4294967295, mask_SORT_53=4294967295, mask_SORT_56=4294967295, mask_SORT_59=4294967295, mask_SORT_62=4294967295, mask_SORT_72=7, mask_SORT_9=4294967295, mask_SORT_96=15, msb_SORT_1=1, msb_SORT_101=32, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_9=1073741824, msb_SORT_96=8, state_100=15, state_17=1, state_5=0, state_76=0, state_97=5, var_10=0, var_108=200, var_113=4, var_116=6, var_120=9, var_13=0, var_137=0, var_14=200, var_140=0, var_15_arg_0=1, var_15_arg_1=200, var_15_arg_2=0, var_7=0, var_73=5, var_74=0, var_74_arg_0=0, var_75=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_8=1, var_84=6, var_84_arg_0=0, var_85=1, var_85_arg_0=6, var_86=1, var_86_arg_0=0, var_86_arg_1=1, var_88=1, var_88_arg_0=1, var_89=1, var_89_arg_0=0, var_89_arg_1=1, var_90=1, var_90_arg_0=0, var_90_arg_1=1, var_91=0, var_91_arg_0=1, var_92=1, var_92_arg_0=1, var_93=1, var_93_arg_0=0, var_93_arg_1=1] [L164] EXPR var_15_arg_0 ? var_15_arg_1 : var_15_arg_2 VAL [constr_87_arg_0=1, constr_94_arg_0=1, init_77_arg_1=0, input_2=3, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_101=63, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_20=4294967295, mask_SORT_23=4294967295, mask_SORT_26=4294967295, mask_SORT_29=4294967295, mask_SORT_32=4294967295, mask_SORT_35=4294967295, mask_SORT_38=4294967295, mask_SORT_41=4294967295, mask_SORT_44=4294967295, mask_SORT_47=4294967295, mask_SORT_50=4294967295, mask_SORT_53=4294967295, mask_SORT_56=4294967295, mask_SORT_59=4294967295, mask_SORT_62=4294967295, mask_SORT_72=7, mask_SORT_9=4294967295, mask_SORT_96=15, msb_SORT_1=1, msb_SORT_101=32, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_9=1073741824, msb_SORT_96=8, state_100=15, state_17=1, state_5=0, state_76=0, state_97=5, var_10=0, var_108=200, var_113=4, var_116=6, var_120=9, var_13=0, var_137=0, var_14=200, var_140=0, var_15_arg_0=1, var_15_arg_0 ? var_15_arg_1 : var_15_arg_2=200, var_15_arg_1=200, var_15_arg_2=0, var_7=0, var_73=5, var_74=0, var_74_arg_0=0, var_75=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_8=1, var_84=6, var_84_arg_0=0, var_85=1, var_85_arg_0=6, var_86=1, var_86_arg_0=0, var_86_arg_1=1, var_88=1, var_88_arg_0=1, var_89=1, var_89_arg_0=0, var_89_arg_1=1, var_90=1, var_90_arg_0=0, var_90_arg_1=1, var_91=0, var_91_arg_0=1, var_92=1, var_92_arg_0=1, var_93=1, var_93_arg_0=0, var_93_arg_1=1] [L164] SORT_12 var_15 = var_15_arg_0 ? var_15_arg_1 : var_15_arg_2; [L165] var_15 = var_15 & mask_SORT_12 [L166] SORT_12 var_16_arg_0 = var_13; [L167] SORT_12 var_16_arg_1 = var_15; [L168] SORT_11 var_16 = ((SORT_11)var_16_arg_0 << 8) | var_16_arg_1; [L169] SORT_11 var_18_arg_0 = var_16; [L170] SORT_11 var_18_arg_1 = state_17; [L171] SORT_11 var_18 = var_18_arg_0 - var_18_arg_1; [L172] var_18 = var_18 & mask_SORT_11 [L173] SORT_11 var_19_arg_0 = var_18; [L174] SORT_1 var_19 = var_19_arg_0 >> 15; [L175] SORT_1 var_21_arg_0 = var_19; [L176] SORT_9 var_21_arg_1 = var_10; [L177] SORT_20 var_21 = ((SORT_20)var_21_arg_0 << 31) | var_21_arg_1; [L178] var_21 = var_21 & mask_SORT_20 [L179] SORT_11 var_64_arg_0 = var_18; [L180] SORT_1 var_64 = var_64_arg_0 >> 15; [L181] SORT_11 var_61_arg_0 = var_18; [L182] SORT_1 var_61 = var_61_arg_0 >> 15; [L183] SORT_11 var_58_arg_0 = var_18; [L184] SORT_1 var_58 = var_58_arg_0 >> 15; [L185] SORT_11 var_55_arg_0 = var_18; [L186] SORT_1 var_55 = var_55_arg_0 >> 15; [L187] SORT_11 var_52_arg_0 = var_18; [L188] SORT_1 var_52 = var_52_arg_0 >> 15; [L189] SORT_11 var_49_arg_0 = var_18; [L190] SORT_1 var_49 = var_49_arg_0 >> 15; [L191] SORT_11 var_46_arg_0 = var_18; [L192] SORT_1 var_46 = var_46_arg_0 >> 15; [L193] SORT_11 var_43_arg_0 = var_18; [L194] SORT_1 var_43 = var_43_arg_0 >> 15; [L195] SORT_11 var_40_arg_0 = var_18; [L196] SORT_1 var_40 = var_40_arg_0 >> 15; [L197] SORT_11 var_37_arg_0 = var_18; [L198] SORT_1 var_37 = var_37_arg_0 >> 15; [L199] SORT_11 var_34_arg_0 = var_18; [L200] SORT_1 var_34 = var_34_arg_0 >> 15; [L201] SORT_11 var_31_arg_0 = var_18; [L202] SORT_1 var_31 = var_31_arg_0 >> 15; [L203] SORT_11 var_28_arg_0 = var_18; [L204] SORT_1 var_28 = var_28_arg_0 >> 15; [L205] SORT_11 var_25_arg_0 = var_18; [L206] SORT_1 var_25 = var_25_arg_0 >> 15; [L207] SORT_11 var_22_arg_0 = var_18; [L208] SORT_1 var_22 = var_22_arg_0 >> 15; [L209] SORT_1 var_24_arg_0 = var_22; [L210] SORT_11 var_24_arg_1 = var_18; [L211] SORT_23 var_24 = ((SORT_23)var_24_arg_0 << 16) | var_24_arg_1; [L212] var_24 = var_24 & mask_SORT_23 [L213] SORT_1 var_27_arg_0 = var_25; [L214] SORT_23 var_27_arg_1 = var_24; [L215] SORT_26 var_27 = ((SORT_26)var_27_arg_0 << 17) | var_27_arg_1; [L216] var_27 = var_27 & mask_SORT_26 [L217] SORT_1 var_30_arg_0 = var_28; [L218] SORT_26 var_30_arg_1 = var_27; [L219] SORT_29 var_30 = ((SORT_29)var_30_arg_0 << 18) | var_30_arg_1; [L220] var_30 = var_30 & mask_SORT_29 [L221] SORT_1 var_33_arg_0 = var_31; [L222] SORT_29 var_33_arg_1 = var_30; [L223] SORT_32 var_33 = ((SORT_32)var_33_arg_0 << 19) | var_33_arg_1; [L224] var_33 = var_33 & mask_SORT_32 [L225] SORT_1 var_36_arg_0 = var_34; [L226] SORT_32 var_36_arg_1 = var_33; [L227] SORT_35 var_36 = ((SORT_35)var_36_arg_0 << 20) | var_36_arg_1; [L228] var_36 = var_36 & mask_SORT_35 [L229] SORT_1 var_39_arg_0 = var_37; [L230] SORT_35 var_39_arg_1 = var_36; [L231] SORT_38 var_39 = ((SORT_38)var_39_arg_0 << 21) | var_39_arg_1; [L232] var_39 = var_39 & mask_SORT_38 [L233] SORT_1 var_42_arg_0 = var_40; [L234] SORT_38 var_42_arg_1 = var_39; [L235] SORT_41 var_42 = ((SORT_41)var_42_arg_0 << 22) | var_42_arg_1; [L236] var_42 = var_42 & mask_SORT_41 [L237] SORT_1 var_45_arg_0 = var_43; [L238] SORT_41 var_45_arg_1 = var_42; [L239] SORT_44 var_45 = ((SORT_44)var_45_arg_0 << 23) | var_45_arg_1; [L240] var_45 = var_45 & mask_SORT_44 [L241] SORT_1 var_48_arg_0 = var_46; [L242] SORT_44 var_48_arg_1 = var_45; [L243] SORT_47 var_48 = ((SORT_47)var_48_arg_0 << 24) | var_48_arg_1; [L244] var_48 = var_48 & mask_SORT_47 [L245] SORT_1 var_51_arg_0 = var_49; [L246] SORT_47 var_51_arg_1 = var_48; [L247] SORT_50 var_51 = ((SORT_50)var_51_arg_0 << 25) | var_51_arg_1; [L248] var_51 = var_51 & mask_SORT_50 [L249] SORT_1 var_54_arg_0 = var_52; [L250] SORT_50 var_54_arg_1 = var_51; [L251] SORT_53 var_54 = ((SORT_53)var_54_arg_0 << 26) | var_54_arg_1; [L252] var_54 = var_54 & mask_SORT_53 [L253] SORT_1 var_57_arg_0 = var_55; [L254] SORT_53 var_57_arg_1 = var_54; [L255] SORT_56 var_57 = ((SORT_56)var_57_arg_0 << 27) | var_57_arg_1; [L256] var_57 = var_57 & mask_SORT_56 [L257] SORT_1 var_60_arg_0 = var_58; [L258] SORT_56 var_60_arg_1 = var_57; [L259] SORT_59 var_60 = ((SORT_59)var_60_arg_0 << 28) | var_60_arg_1; [L260] var_60 = var_60 & mask_SORT_59 [L261] SORT_1 var_63_arg_0 = var_61; [L262] SORT_59 var_63_arg_1 = var_60; [L263] SORT_62 var_63 = ((SORT_62)var_63_arg_0 << 29) | var_63_arg_1; [L264] var_63 = var_63 & mask_SORT_62 [L265] SORT_1 var_65_arg_0 = var_64; [L266] SORT_62 var_65_arg_1 = var_63; [L267] SORT_9 var_65 = ((SORT_9)var_65_arg_0 << 30) | var_65_arg_1; [L268] SORT_9 var_66_arg_0 = var_65; [L269] var_66_arg_0 = var_66_arg_0 & mask_SORT_9 [L270] SORT_20 var_66 = var_66_arg_0; [L271] SORT_20 var_67_arg_0 = var_21; [L272] SORT_20 var_67_arg_1 = var_66; [L273] SORT_1 var_67 = var_67_arg_0 <= var_67_arg_1; [L274] SORT_1 var_68_arg_0 = var_67; [L275] SORT_1 var_68_arg_1 = var_8; [L276] SORT_1 var_68_arg_2 = var_7; VAL [constr_87_arg_0=1, constr_94_arg_0=1, init_77_arg_1=0, input_2=3, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_101=63, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_20=4294967295, mask_SORT_23=4294967295, mask_SORT_26=4294967295, mask_SORT_29=4294967295, mask_SORT_32=4294967295, mask_SORT_35=4294967295, mask_SORT_38=4294967295, mask_SORT_41=4294967295, mask_SORT_44=4294967295, mask_SORT_47=4294967295, mask_SORT_50=4294967295, mask_SORT_53=4294967295, mask_SORT_56=4294967295, mask_SORT_59=4294967295, mask_SORT_62=4294967295, mask_SORT_72=7, mask_SORT_9=4294967295, mask_SORT_96=15, msb_SORT_1=1, msb_SORT_101=32, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_9=1073741824, msb_SORT_96=8, state_100=15, state_17=1, state_5=0, state_76=0, state_97=5, var_10=0, var_108=200, var_113=4, var_116=6, var_120=9, var_13=0, var_137=0, var_14=200, var_140=0, var_15=0, var_15_arg_0=1, var_15_arg_1=200, var_15_arg_2=0, var_16=0, var_16_arg_0=0, var_16_arg_1=0, var_18=65535, var_18_arg_0=0, var_18_arg_1=1, var_19=1, var_19_arg_0=65535, var_21=2147483647, var_21_arg_0=1, var_21_arg_1=0, var_22=1, var_22_arg_0=65535, var_24=0, var_24_arg_0=1, var_24_arg_1=65535, var_25=1, var_25_arg_0=65535, var_27=0, var_27_arg_0=1, var_27_arg_1=0, var_28=1, var_28_arg_0=65535, var_30=2147483656, var_30_arg_0=1, var_30_arg_1=0, var_31=1, var_31_arg_0=65535, var_33=2147483650, var_33_arg_0=1, var_33_arg_1=2147483656, var_34=1, var_34_arg_0=65535, var_36=1, var_36_arg_0=1, var_36_arg_1=2147483650, var_37=1, var_37_arg_0=65535, var_39=4294967295, var_39_arg_0=1, var_39_arg_1=1, var_40=1, var_40_arg_0=65535, var_42=0, var_42_arg_0=1, var_42_arg_1=4294967295, var_43=1, var_43_arg_0=65535, var_45=0, var_45_arg_0=1, var_45_arg_1=0, var_46=1, var_46_arg_0=65535, var_48=0, var_48_arg_0=1, var_48_arg_1=0, var_49=1, var_49_arg_0=65535, var_51=0, var_51_arg_0=1, var_51_arg_1=0, var_52=1, var_52_arg_0=65535, var_54=0, var_54_arg_0=1, var_54_arg_1=0, var_55=1, var_55_arg_0=65535, var_57=0, var_57_arg_0=1, var_57_arg_1=0, var_58=1, var_58_arg_0=65535, var_60=2147483655, var_60_arg_0=1, var_60_arg_1=0, var_61=1, var_61_arg_0=65535, var_63=2147483649, var_63_arg_0=1, var_63_arg_1=2147483655, var_64=1, var_64_arg_0=65535, var_65=2147483645, var_65_arg_0=1, var_65_arg_1=2147483649, var_66=2147483647, var_66_arg_0=2147483647, var_67=1, var_67_arg_0=2147483647, var_67_arg_1=2147483647, var_68_arg_0=1, var_68_arg_1=1, var_68_arg_2=0, var_7=0, var_73=5, var_74=0, var_74_arg_0=0, var_75=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_8=1, var_84=6, var_84_arg_0=0, var_85=1, var_85_arg_0=6, var_86=1, var_86_arg_0=0, var_86_arg_1=1, var_88=1, var_88_arg_0=1, var_89=1, var_89_arg_0=0, var_89_arg_1=1, var_90=1, var_90_arg_0=0, var_90_arg_1=1, var_91=0, var_91_arg_0=1, var_92=1, var_92_arg_0=1, var_93=1, var_93_arg_0=0, var_93_arg_1=1] [L277] EXPR var_68_arg_0 ? var_68_arg_1 : var_68_arg_2 VAL [constr_87_arg_0=1, constr_94_arg_0=1, init_77_arg_1=0, input_2=3, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_101=63, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_20=4294967295, mask_SORT_23=4294967295, mask_SORT_26=4294967295, mask_SORT_29=4294967295, mask_SORT_32=4294967295, mask_SORT_35=4294967295, mask_SORT_38=4294967295, mask_SORT_41=4294967295, mask_SORT_44=4294967295, mask_SORT_47=4294967295, mask_SORT_50=4294967295, mask_SORT_53=4294967295, mask_SORT_56=4294967295, mask_SORT_59=4294967295, mask_SORT_62=4294967295, mask_SORT_72=7, mask_SORT_9=4294967295, mask_SORT_96=15, msb_SORT_1=1, msb_SORT_101=32, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_9=1073741824, msb_SORT_96=8, state_100=15, state_17=1, state_5=0, state_76=0, state_97=5, var_10=0, var_108=200, var_113=4, var_116=6, var_120=9, var_13=0, var_137=0, var_14=200, var_140=0, var_15=0, var_15_arg_0=1, var_15_arg_1=200, var_15_arg_2=0, var_16=0, var_16_arg_0=0, var_16_arg_1=0, var_18=65535, var_18_arg_0=0, var_18_arg_1=1, var_19=1, var_19_arg_0=65535, var_21=2147483647, var_21_arg_0=1, var_21_arg_1=0, var_22=1, var_22_arg_0=65535, var_24=0, var_24_arg_0=1, var_24_arg_1=65535, var_25=1, var_25_arg_0=65535, var_27=0, var_27_arg_0=1, var_27_arg_1=0, var_28=1, var_28_arg_0=65535, var_30=2147483656, var_30_arg_0=1, var_30_arg_1=0, var_31=1, var_31_arg_0=65535, var_33=2147483650, var_33_arg_0=1, var_33_arg_1=2147483656, var_34=1, var_34_arg_0=65535, var_36=1, var_36_arg_0=1, var_36_arg_1=2147483650, var_37=1, var_37_arg_0=65535, var_39=4294967295, var_39_arg_0=1, var_39_arg_1=1, var_40=1, var_40_arg_0=65535, var_42=0, var_42_arg_0=1, var_42_arg_1=4294967295, var_43=1, var_43_arg_0=65535, var_45=0, var_45_arg_0=1, var_45_arg_1=0, var_46=1, var_46_arg_0=65535, var_48=0, var_48_arg_0=1, var_48_arg_1=0, var_49=1, var_49_arg_0=65535, var_51=0, var_51_arg_0=1, var_51_arg_1=0, var_52=1, var_52_arg_0=65535, var_54=0, var_54_arg_0=1, var_54_arg_1=0, var_55=1, var_55_arg_0=65535, var_57=0, var_57_arg_0=1, var_57_arg_1=0, var_58=1, var_58_arg_0=65535, var_60=2147483655, var_60_arg_0=1, var_60_arg_1=0, var_61=1, var_61_arg_0=65535, var_63=2147483649, var_63_arg_0=1, var_63_arg_1=2147483655, var_64=1, var_64_arg_0=65535, var_65=2147483645, var_65_arg_0=1, var_65_arg_1=2147483649, var_66=2147483647, var_66_arg_0=2147483647, var_67=1, var_67_arg_0=2147483647, var_67_arg_1=2147483647, var_68_arg_0=1, var_68_arg_0 ? var_68_arg_1 : var_68_arg_2=1, var_68_arg_1=1, var_68_arg_2=0, var_7=0, var_73=5, var_74=0, var_74_arg_0=0, var_75=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_8=1, var_84=6, var_84_arg_0=0, var_85=1, var_85_arg_0=6, var_86=1, var_86_arg_0=0, var_86_arg_1=1, var_88=1, var_88_arg_0=1, var_89=1, var_89_arg_0=0, var_89_arg_1=1, var_90=1, var_90_arg_0=0, var_90_arg_1=1, var_91=0, var_91_arg_0=1, var_92=1, var_92_arg_0=1, var_93=1, var_93_arg_0=0, var_93_arg_1=1] [L277] SORT_1 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L278] var_68 = var_68 & mask_SORT_1 [L279] SORT_1 var_69_arg_0 = input_3; [L280] SORT_1 var_69_arg_1 = var_68; [L281] SORT_1 var_69 = var_69_arg_0 ^ var_69_arg_1; [L282] SORT_1 var_70_arg_0 = var_69; [L283] SORT_1 var_70 = ~var_70_arg_0; [L284] SORT_1 var_79_arg_0 = var_78; [L285] SORT_1 var_79_arg_1 = var_70; [L286] SORT_1 var_79_arg_2 = var_8; VAL [constr_87_arg_0=1, constr_94_arg_0=1, init_77_arg_1=0, input_2=3, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_101=63, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_20=4294967295, mask_SORT_23=4294967295, mask_SORT_26=4294967295, mask_SORT_29=4294967295, mask_SORT_32=4294967295, mask_SORT_35=4294967295, mask_SORT_38=4294967295, mask_SORT_41=4294967295, mask_SORT_44=4294967295, mask_SORT_47=4294967295, mask_SORT_50=4294967295, mask_SORT_53=4294967295, mask_SORT_56=4294967295, mask_SORT_59=4294967295, mask_SORT_62=4294967295, mask_SORT_72=7, mask_SORT_9=4294967295, mask_SORT_96=15, msb_SORT_1=1, msb_SORT_101=32, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_9=1073741824, msb_SORT_96=8, state_100=15, state_17=1, state_5=0, state_76=0, state_97=5, var_10=0, var_108=200, var_113=4, var_116=6, var_120=9, var_13=0, var_137=0, var_14=200, var_140=0, var_15=0, var_15_arg_0=1, var_15_arg_1=200, var_15_arg_2=0, var_16=0, var_16_arg_0=0, var_16_arg_1=0, var_18=65535, var_18_arg_0=0, var_18_arg_1=1, var_19=1, var_19_arg_0=65535, var_21=2147483647, var_21_arg_0=1, var_21_arg_1=0, var_22=1, var_22_arg_0=65535, var_24=0, var_24_arg_0=1, var_24_arg_1=65535, var_25=1, var_25_arg_0=65535, var_27=0, var_27_arg_0=1, var_27_arg_1=0, var_28=1, var_28_arg_0=65535, var_30=2147483656, var_30_arg_0=1, var_30_arg_1=0, var_31=1, var_31_arg_0=65535, var_33=2147483650, var_33_arg_0=1, var_33_arg_1=2147483656, var_34=1, var_34_arg_0=65535, var_36=1, var_36_arg_0=1, var_36_arg_1=2147483650, var_37=1, var_37_arg_0=65535, var_39=4294967295, var_39_arg_0=1, var_39_arg_1=1, var_40=1, var_40_arg_0=65535, var_42=0, var_42_arg_0=1, var_42_arg_1=4294967295, var_43=1, var_43_arg_0=65535, var_45=0, var_45_arg_0=1, var_45_arg_1=0, var_46=1, var_46_arg_0=65535, var_48=0, var_48_arg_0=1, var_48_arg_1=0, var_49=1, var_49_arg_0=65535, var_51=0, var_51_arg_0=1, var_51_arg_1=0, var_52=1, var_52_arg_0=65535, var_54=0, var_54_arg_0=1, var_54_arg_1=0, var_55=1, var_55_arg_0=65535, var_57=0, var_57_arg_0=1, var_57_arg_1=0, var_58=1, var_58_arg_0=65535, var_60=2147483655, var_60_arg_0=1, var_60_arg_1=0, var_61=1, var_61_arg_0=65535, var_63=2147483649, var_63_arg_0=1, var_63_arg_1=2147483655, var_64=1, var_64_arg_0=65535, var_65=2147483645, var_65_arg_0=1, var_65_arg_1=2147483649, var_66=2147483647, var_66_arg_0=2147483647, var_67=1, var_67_arg_0=2147483647, var_67_arg_1=2147483647, var_68=1, var_68_arg_0=1, var_68_arg_1=1, var_68_arg_2=0, var_69=0, var_69_arg_0=1, var_69_arg_1=1, var_7=0, var_70=4, var_70_arg_0=0, var_73=5, var_74=0, var_74_arg_0=0, var_75=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79_arg_0=0, var_79_arg_1=4, var_79_arg_2=1, var_8=1, var_84=6, var_84_arg_0=0, var_85=1, var_85_arg_0=6, var_86=1, var_86_arg_0=0, var_86_arg_1=1, var_88=1, var_88_arg_0=1, var_89=1, var_89_arg_0=0, var_89_arg_1=1, var_90=1, var_90_arg_0=0, var_90_arg_1=1, var_91=0, var_91_arg_0=1, var_92=1, var_92_arg_0=1, var_93=1, var_93_arg_0=0, var_93_arg_1=1] [L287] EXPR var_79_arg_0 ? var_79_arg_1 : var_79_arg_2 VAL [constr_87_arg_0=1, constr_94_arg_0=1, init_77_arg_1=0, input_2=3, input_3=1, input_4=0, mask_SORT_1=1, mask_SORT_101=63, mask_SORT_11=65535, mask_SORT_12=255, mask_SORT_20=4294967295, mask_SORT_23=4294967295, mask_SORT_26=4294967295, mask_SORT_29=4294967295, mask_SORT_32=4294967295, mask_SORT_35=4294967295, mask_SORT_38=4294967295, mask_SORT_41=4294967295, mask_SORT_44=4294967295, mask_SORT_47=4294967295, mask_SORT_50=4294967295, mask_SORT_53=4294967295, mask_SORT_56=4294967295, mask_SORT_59=4294967295, mask_SORT_62=4294967295, mask_SORT_72=7, mask_SORT_9=4294967295, mask_SORT_96=15, msb_SORT_1=1, msb_SORT_101=32, msb_SORT_11=32768, msb_SORT_12=128, msb_SORT_20=2147483648, msb_SORT_23=65536, msb_SORT_26=131072, msb_SORT_29=262144, msb_SORT_32=524288, msb_SORT_35=1048576, msb_SORT_38=2097152, msb_SORT_41=4194304, msb_SORT_44=8388608, msb_SORT_47=16777216, msb_SORT_50=33554432, msb_SORT_53=67108864, msb_SORT_56=134217728, msb_SORT_59=268435456, msb_SORT_62=536870912, msb_SORT_72=4, msb_SORT_9=1073741824, msb_SORT_96=8, state_100=15, state_17=1, state_5=0, state_76=0, state_97=5, var_10=0, var_108=200, var_113=4, var_116=6, var_120=9, var_13=0, var_137=0, var_14=200, var_140=0, var_15=0, var_15_arg_0=1, var_15_arg_1=200, var_15_arg_2=0, var_16=0, var_16_arg_0=0, var_16_arg_1=0, var_18=65535, var_18_arg_0=0, var_18_arg_1=1, var_19=1, var_19_arg_0=65535, var_21=2147483647, var_21_arg_0=1, var_21_arg_1=0, var_22=1, var_22_arg_0=65535, var_24=0, var_24_arg_0=1, var_24_arg_1=65535, var_25=1, var_25_arg_0=65535, var_27=0, var_27_arg_0=1, var_27_arg_1=0, var_28=1, var_28_arg_0=65535, var_30=2147483656, var_30_arg_0=1, var_30_arg_1=0, var_31=1, var_31_arg_0=65535, var_33=2147483650, var_33_arg_0=1, var_33_arg_1=2147483656, var_34=1, var_34_arg_0=65535, var_36=1, var_36_arg_0=1, var_36_arg_1=2147483650, var_37=1, var_37_arg_0=65535, var_39=4294967295, var_39_arg_0=1, var_39_arg_1=1, var_40=1, var_40_arg_0=65535, var_42=0, var_42_arg_0=1, var_42_arg_1=4294967295, var_43=1, var_43_arg_0=65535, var_45=0, var_45_arg_0=1, var_45_arg_1=0, var_46=1, var_46_arg_0=65535, var_48=0, var_48_arg_0=1, var_48_arg_1=0, var_49=1, var_49_arg_0=65535, var_51=0, var_51_arg_0=1, var_51_arg_1=0, var_52=1, var_52_arg_0=65535, var_54=0, var_54_arg_0=1, var_54_arg_1=0, var_55=1, var_55_arg_0=65535, var_57=0, var_57_arg_0=1, var_57_arg_1=0, var_58=1, var_58_arg_0=65535, var_60=2147483655, var_60_arg_0=1, var_60_arg_1=0, var_61=1, var_61_arg_0=65535, var_63=2147483649, var_63_arg_0=1, var_63_arg_1=2147483655, var_64=1, var_64_arg_0=65535, var_65=2147483645, var_65_arg_0=1, var_65_arg_1=2147483649, var_66=2147483647, var_66_arg_0=2147483647, var_67=1, var_67_arg_0=2147483647, var_67_arg_1=2147483647, var_68=1, var_68_arg_0=1, var_68_arg_1=1, var_68_arg_2=0, var_69=0, var_69_arg_0=1, var_69_arg_1=1, var_7=0, var_70=4, var_70_arg_0=0, var_73=5, var_74=0, var_74_arg_0=0, var_75=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79_arg_0=0, var_79_arg_0 ? var_79_arg_1 : var_79_arg_2=1, var_79_arg_1=4, var_79_arg_2=1, var_8=1, var_84=6, var_84_arg_0=0, var_85=1, var_85_arg_0=6, var_86=1, var_86_arg_0=0, var_86_arg_1=1, var_88=1, var_88_arg_0=1, var_89=1, var_89_arg_0=0, var_89_arg_1=1, var_90=1, var_90_arg_0=0, var_90_arg_1=1, var_91=0, var_91_arg_0=1, var_92=1, var_92_arg_0=1, var_93=1, var_93_arg_0=0, var_93_arg_1=1] [L287] SORT_1 var_79 = var_79_arg_0 ? var_79_arg_1 : var_79_arg_2; [L288] SORT_1 var_80_arg_0 = var_79; [L289] SORT_1 var_80 = ~var_80_arg_0; [L290] SORT_1 var_81_arg_0 = var_79; [L291] SORT_1 var_81 = ~var_81_arg_0; [L292] SORT_1 var_82_arg_0 = var_80; [L293] SORT_1 var_82_arg_1 = var_81; [L294] SORT_1 var_82 = var_82_arg_0 & var_82_arg_1; [L295] var_82 = var_82 & mask_SORT_1 [L296] SORT_1 bad_83_arg_0 = var_82; [L297] CALL __VERIFIER_assert(!(bad_83_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 49 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 19:51:08,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0af4734225f8d624097b2f71d989da577cf3312ce2c1d0203423496ca1c15566 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 19:51:11,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:51:11,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:51:11,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:51:11,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:51:11,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:51:11,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:51:11,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:51:11,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:51:11,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:51:11,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:51:11,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:51:11,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:51:11,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:51:11,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:51:11,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:51:11,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:51:11,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:51:11,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:51:11,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:51:11,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:51:11,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:51:11,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:51:11,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:51:11,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:51:11,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:51:11,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:51:11,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:51:11,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:51:11,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:51:11,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:51:11,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:51:11,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:51:11,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:51:11,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:51:11,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:51:11,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:51:11,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:51:11,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:51:11,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:51:11,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:51:11,933 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 19:51:11,981 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:51:11,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:51:11,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:51:11,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:51:11,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:51:11,984 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:51:11,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:51:11,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:51:11,986 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:51:11,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:51:11,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:51:11,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:51:11,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:51:11,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:51:11,989 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 19:51:11,989 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 19:51:11,989 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 19:51:11,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:51:11,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:51:11,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:51:11,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:51:11,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:51:11,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:51:11,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:51:11,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:51:11,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:51:11,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:51:11,992 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 19:51:11,992 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 19:51:11,992 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:51:11,992 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:51:11,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:51:11,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 19:51:11,993 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0af4734225f8d624097b2f71d989da577cf3312ce2c1d0203423496ca1c15566 [2022-11-02 19:51:12,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:51:12,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:51:12,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:51:12,503 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:51:12,504 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:51:12,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c [2022-11-02 19:51:12,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/data/d0ef6d40e/70831c98522644078ca11a4d17ba730e/FLAG88ee56259 [2022-11-02 19:51:13,360 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:51:13,361 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c [2022-11-02 19:51:13,373 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/data/d0ef6d40e/70831c98522644078ca11a4d17ba730e/FLAG88ee56259 [2022-11-02 19:51:13,642 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/data/d0ef6d40e/70831c98522644078ca11a4d17ba730e [2022-11-02 19:51:13,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:51:13,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:51:13,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:51:13,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:51:13,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:51:13,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:51:13" (1/1) ... [2022-11-02 19:51:13,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dfc7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:51:13, skipping insertion in model container [2022-11-02 19:51:13,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:51:13" (1/1) ... [2022-11-02 19:51:13,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:51:13,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:51:13,929 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c[1120,1133] [2022-11-02 19:51:14,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:51:14,154 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:51:14,175 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_analog_estimation_convergence.c[1120,1133] [2022-11-02 19:51:14,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:51:14,293 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:51:14,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:51:14 WrapperNode [2022-11-02 19:51:14,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:51:14,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:51:14,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:51:14,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:51:14,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:51:14" (1/1) ... [2022-11-02 19:51:14,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:51:14" (1/1) ... [2022-11-02 19:51:14,373 INFO L138 Inliner]: procedures = 11, calls = 5, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 405 [2022-11-02 19:51:14,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:51:14,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:51:14,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:51:14,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:51:14,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:51:14" (1/1) ... [2022-11-02 19:51:14,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:51:14" (1/1) ... [2022-11-02 19:51:14,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:51:14" (1/1) ... [2022-11-02 19:51:14,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:51:14" (1/1) ... [2022-11-02 19:51:14,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:51:14" (1/1) ... [2022-11-02 19:51:14,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:51:14" (1/1) ... [2022-11-02 19:51:14,444 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:51:14" (1/1) ... [2022-11-02 19:51:14,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:51:14" (1/1) ... [2022-11-02 19:51:14,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:51:14,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:51:14,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:51:14,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:51:14,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:51:14" (1/1) ... [2022-11-02 19:51:14,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:51:14,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:51:14,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:51:14,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:51:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:51:14,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:51:14,576 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 19:51:14,576 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 19:51:14,761 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:51:14,764 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:51:15,617 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:51:15,627 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:51:15,627 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:51:15,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:51:15 BoogieIcfgContainer [2022-11-02 19:51:15,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:51:15,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:51:15,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:51:15,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:51:15,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:51:13" (1/3) ... [2022-11-02 19:51:15,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16512303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:51:15, skipping insertion in model container [2022-11-02 19:51:15,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:51:14" (2/3) ... [2022-11-02 19:51:15,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16512303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:51:15, skipping insertion in model container [2022-11-02 19:51:15,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:51:15" (3/3) ... [2022-11-02 19:51:15,641 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_analog_estimation_convergence.c [2022-11-02 19:51:15,665 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:51:15,665 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:51:15,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:51:15,763 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@188ea636, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:51:15,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:51:15,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 37 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 19:51:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 19:51:15,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:15,781 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:51:15,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:15,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:15,791 INFO L85 PathProgramCache]: Analyzing trace with hash 637573395, now seen corresponding path program 1 times [2022-11-02 19:51:15,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:15,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126578337] [2022-11-02 19:51:15,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:15,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:15,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:15,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:15,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 19:51:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:16,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 19:51:16,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 19:51:16,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:51:16,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:16,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126578337] [2022-11-02 19:51:16,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126578337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:51:16,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:51:16,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:51:16,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53321601] [2022-11-02 19:51:16,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:16,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 19:51:16,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:16,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 19:51:16,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 19:51:16,338 INFO L87 Difference]: Start difference. First operand has 41 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 37 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 19:51:16,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:16,385 INFO L93 Difference]: Finished difference Result 76 states and 109 transitions. [2022-11-02 19:51:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 19:51:16,389 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-11-02 19:51:16,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:16,398 INFO L225 Difference]: With dead ends: 76 [2022-11-02 19:51:16,399 INFO L226 Difference]: Without dead ends: 37 [2022-11-02 19:51:16,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 19:51:16,407 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:16,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:51:16,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-02 19:51:16,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-02 19:51:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 19:51:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2022-11-02 19:51:16,458 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 23 [2022-11-02 19:51:16,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:16,459 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2022-11-02 19:51:16,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 19:51:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2022-11-02 19:51:16,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 19:51:16,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:16,463 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:51:16,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-02 19:51:16,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:16,681 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:16,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:16,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1098405873, now seen corresponding path program 1 times [2022-11-02 19:51:16,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:16,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902173324] [2022-11-02 19:51:16,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:16,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:16,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:16,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:16,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 19:51:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:16,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 19:51:16,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 19:51:17,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:51:17,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:17,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902173324] [2022-11-02 19:51:17,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902173324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:51:17,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:51:17,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:51:17,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568962037] [2022-11-02 19:51:17,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:17,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:51:17,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:17,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:51:17,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:51:17,227 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 19:51:17,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:17,594 INFO L93 Difference]: Finished difference Result 79 states and 108 transitions. [2022-11-02 19:51:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:51:17,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-02 19:51:17,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:17,597 INFO L225 Difference]: With dead ends: 79 [2022-11-02 19:51:17,597 INFO L226 Difference]: Without dead ends: 77 [2022-11-02 19:51:17,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:51:17,599 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 168 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:17,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 160 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:51:17,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-02 19:51:17,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 39. [2022-11-02 19:51:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 19:51:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2022-11-02 19:51:17,614 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 23 [2022-11-02 19:51:17,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:17,615 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2022-11-02 19:51:17,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 19:51:17,615 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2022-11-02 19:51:17,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 19:51:17,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:17,617 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:51:17,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:17,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:17,831 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:17,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:17,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1098465455, now seen corresponding path program 1 times [2022-11-02 19:51:17,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:17,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342159010] [2022-11-02 19:51:17,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:17,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:17,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:17,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:17,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 19:51:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:18,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 19:51:18,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 19:51:18,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:51:18,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:18,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342159010] [2022-11-02 19:51:18,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342159010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:51:18,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:51:18,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:51:18,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357350392] [2022-11-02 19:51:18,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:18,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:51:18,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:18,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:51:18,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:51:18,206 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 19:51:18,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:18,343 INFO L93 Difference]: Finished difference Result 136 states and 187 transitions. [2022-11-02 19:51:18,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:51:18,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-02 19:51:18,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:18,346 INFO L225 Difference]: With dead ends: 136 [2022-11-02 19:51:18,346 INFO L226 Difference]: Without dead ends: 99 [2022-11-02 19:51:18,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:51:18,348 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 133 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:18,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 211 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:51:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-02 19:51:18,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 49. [2022-11-02 19:51:18,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 43 states have internal predecessors, (57), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 19:51:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2022-11-02 19:51:18,362 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 23 [2022-11-02 19:51:18,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:18,362 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2022-11-02 19:51:18,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 19:51:18,363 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2022-11-02 19:51:18,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-02 19:51:18,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:18,365 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:51:18,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:18,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:18,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:18,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:18,581 INFO L85 PathProgramCache]: Analyzing trace with hash -613805241, now seen corresponding path program 1 times [2022-11-02 19:51:18,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:18,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244629774] [2022-11-02 19:51:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:18,583 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:18,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:18,587 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:18,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 19:51:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:18,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 19:51:18,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:19,132 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 19:51:19,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:51:19,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:19,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244629774] [2022-11-02 19:51:19,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244629774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:51:19,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:51:19,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:51:19,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132439168] [2022-11-02 19:51:19,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:19,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:51:19,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:19,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:51:19,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:51:19,142 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:51:19,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:19,566 INFO L93 Difference]: Finished difference Result 147 states and 194 transitions. [2022-11-02 19:51:19,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:51:19,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 60 [2022-11-02 19:51:19,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:19,569 INFO L225 Difference]: With dead ends: 147 [2022-11-02 19:51:19,569 INFO L226 Difference]: Without dead ends: 110 [2022-11-02 19:51:19,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:51:19,571 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 214 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:19,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 229 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:51:19,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-02 19:51:19,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 63. [2022-11-02 19:51:19,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 19:51:19,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2022-11-02 19:51:19,587 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 60 [2022-11-02 19:51:19,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:19,588 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2022-11-02 19:51:19,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:51:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2022-11-02 19:51:19,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-02 19:51:19,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:19,591 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:51:19,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-02 19:51:19,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:19,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:19,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:19,810 INFO L85 PathProgramCache]: Analyzing trace with hash -541418683, now seen corresponding path program 1 times [2022-11-02 19:51:19,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:19,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069155141] [2022-11-02 19:51:19,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:19,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:19,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:19,814 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:19,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 19:51:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:20,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 19:51:20,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 19:51:20,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:21,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:21,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069155141] [2022-11-02 19:51:21,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069155141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:21,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [777777649] [2022-11-02 19:51:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:21,245 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:51:21,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:51:21,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:51:21,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-02 19:51:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:21,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 19:51:21,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 19:51:22,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:23,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [777777649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:23,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:51:23,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 16 [2022-11-02 19:51:23,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780079953] [2022-11-02 19:51:23,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:51:23,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 19:51:23,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:23,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 19:51:23,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-11-02 19:51:23,312 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-02 19:51:24,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:24,708 INFO L93 Difference]: Finished difference Result 211 states and 286 transitions. [2022-11-02 19:51:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-02 19:51:24,709 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 60 [2022-11-02 19:51:24,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:24,719 INFO L225 Difference]: With dead ends: 211 [2022-11-02 19:51:24,720 INFO L226 Difference]: Without dead ends: 162 [2022-11-02 19:51:24,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=315, Invalid=1941, Unknown=0, NotChecked=0, Total=2256 [2022-11-02 19:51:24,725 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 70 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:24,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 670 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 174 Unchecked, 0.1s Time] [2022-11-02 19:51:24,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-02 19:51:24,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 147. [2022-11-02 19:51:24,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 137 states have (on average 1.3284671532846715) internal successors, (182), 137 states have internal predecessors, (182), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 19:51:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 198 transitions. [2022-11-02 19:51:24,780 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 198 transitions. Word has length 60 [2022-11-02 19:51:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:24,781 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 198 transitions. [2022-11-02 19:51:24,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-02 19:51:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 198 transitions. [2022-11-02 19:51:24,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-02 19:51:24,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:24,784 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:51:24,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:25,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:25,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:25,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:25,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:25,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1350765309, now seen corresponding path program 1 times [2022-11-02 19:51:25,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:25,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559914278] [2022-11-02 19:51:25,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:25,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:25,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:25,198 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:25,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 19:51:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:25,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 19:51:25,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:26,100 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 19:51:26,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:26,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:26,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559914278] [2022-11-02 19:51:26,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559914278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:26,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1734786208] [2022-11-02 19:51:26,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:26,392 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:51:26,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:51:26,399 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:51:26,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-02 19:51:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:27,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 19:51:27,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 19:51:27,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:27,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1734786208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:27,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:51:27,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 10 [2022-11-02 19:51:27,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777951324] [2022-11-02 19:51:27,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:51:27,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 19:51:27,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:27,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 19:51:27,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:51:27,964 INFO L87 Difference]: Start difference. First operand 147 states and 198 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-02 19:51:28,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:28,185 INFO L93 Difference]: Finished difference Result 306 states and 414 transitions. [2022-11-02 19:51:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:51:28,186 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 60 [2022-11-02 19:51:28,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:28,188 INFO L225 Difference]: With dead ends: 306 [2022-11-02 19:51:28,188 INFO L226 Difference]: Without dead ends: 257 [2022-11-02 19:51:28,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:51:28,190 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 139 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:28,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 356 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2022-11-02 19:51:28,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-02 19:51:28,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 186. [2022-11-02 19:51:28,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 174 states have (on average 1.3275862068965518) internal successors, (231), 174 states have internal predecessors, (231), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-02 19:51:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 251 transitions. [2022-11-02 19:51:28,216 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 251 transitions. Word has length 60 [2022-11-02 19:51:28,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:28,216 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 251 transitions. [2022-11-02 19:51:28,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-02 19:51:28,217 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 251 transitions. [2022-11-02 19:51:28,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-02 19:51:28,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:28,221 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 19:51:28,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:28,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:28,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt [2022-11-02 19:51:28,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:28,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:28,639 INFO L85 PathProgramCache]: Analyzing trace with hash 76192015, now seen corresponding path program 1 times [2022-11-02 19:51:28,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:28,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411862011] [2022-11-02 19:51:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:28,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:28,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:28,642 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:28,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 19:51:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:29,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:51:29,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 71 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 19:51:29,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:29,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:29,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411862011] [2022-11-02 19:51:29,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411862011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:29,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1300356087] [2022-11-02 19:51:29,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:29,721 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:51:29,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:51:29,723 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:51:29,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-02 19:51:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:30,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 19:51:30,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:31,301 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-02 19:51:31,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:31,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1300356087] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:31,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:51:31,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2022-11-02 19:51:31,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102715515] [2022-11-02 19:51:31,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:51:31,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 19:51:31,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:31,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 19:51:31,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-11-02 19:51:31,486 INFO L87 Difference]: Start difference. First operand 186 states and 251 transitions. Second operand has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 13 states have internal predecessors, (118), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-02 19:51:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:34,929 INFO L93 Difference]: Finished difference Result 1176 states and 1612 transitions. [2022-11-02 19:51:34,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-02 19:51:34,933 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 13 states have internal predecessors, (118), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 97 [2022-11-02 19:51:34,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:34,939 INFO L225 Difference]: With dead ends: 1176 [2022-11-02 19:51:34,940 INFO L226 Difference]: Without dead ends: 1084 [2022-11-02 19:51:34,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1084, Invalid=3338, Unknown=0, NotChecked=0, Total=4422 [2022-11-02 19:51:34,944 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 671 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:34,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 1097 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:51:34,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2022-11-02 19:51:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 362. [2022-11-02 19:51:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 326 states have (on average 1.2914110429447854) internal successors, (421), 326 states have internal predecessors, (421), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-02 19:51:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 489 transitions. [2022-11-02 19:51:35,040 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 489 transitions. Word has length 97 [2022-11-02 19:51:35,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:35,041 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 489 transitions. [2022-11-02 19:51:35,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 13 states have internal predecessors, (118), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-02 19:51:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 489 transitions. [2022-11-02 19:51:35,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-02 19:51:35,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:35,052 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:51:35,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:35,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:35,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt [2022-11-02 19:51:35,453 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:35,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:35,453 INFO L85 PathProgramCache]: Analyzing trace with hash -130881391, now seen corresponding path program 1 times [2022-11-02 19:51:35,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:35,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522782176] [2022-11-02 19:51:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:35,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:35,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:35,465 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:35,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 19:51:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:35,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:51:35,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 63 proven. 22 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 19:51:36,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:36,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:36,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522782176] [2022-11-02 19:51:36,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522782176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:36,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1657806558] [2022-11-02 19:51:36,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:36,475 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:51:36,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:51:36,476 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:51:36,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-02 19:51:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:37,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:51:37,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-02 19:51:37,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:51:37,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1657806558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:51:37,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:51:37,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-11-02 19:51:37,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270734150] [2022-11-02 19:51:37,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:37,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:51:37,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:37,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:51:37,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:51:37,059 INFO L87 Difference]: Start difference. First operand 362 states and 489 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:51:37,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:37,384 INFO L93 Difference]: Finished difference Result 1288 states and 1747 transitions. [2022-11-02 19:51:37,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:51:37,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 97 [2022-11-02 19:51:37,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:37,390 INFO L225 Difference]: With dead ends: 1288 [2022-11-02 19:51:37,391 INFO L226 Difference]: Without dead ends: 990 [2022-11-02 19:51:37,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:51:37,393 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 129 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:37,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 307 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:51:37,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2022-11-02 19:51:37,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 418. [2022-11-02 19:51:37,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 382 states have (on average 1.2905759162303665) internal successors, (493), 382 states have internal predecessors, (493), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-02 19:51:37,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 561 transitions. [2022-11-02 19:51:37,487 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 561 transitions. Word has length 97 [2022-11-02 19:51:37,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:37,489 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 561 transitions. [2022-11-02 19:51:37,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:51:37,490 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 561 transitions. [2022-11-02 19:51:37,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-02 19:51:37,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:37,492 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:51:37,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:37,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:37,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:37,899 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:37,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:37,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1255322003, now seen corresponding path program 1 times [2022-11-02 19:51:37,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:37,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999430466] [2022-11-02 19:51:37,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:37,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:37,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:37,901 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:37,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 19:51:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:38,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:51:38,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 59 proven. 26 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 19:51:38,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:38,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:38,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999430466] [2022-11-02 19:51:38,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999430466] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:38,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [935750121] [2022-11-02 19:51:38,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:38,923 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:51:38,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:51:38,927 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:51:38,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-02 19:51:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:39,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:51:39,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-02 19:51:39,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:51:39,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [935750121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:51:39,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:51:39,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-11-02 19:51:39,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844092811] [2022-11-02 19:51:39,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:51:39,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:51:39,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:39,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:51:39,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:51:39,526 INFO L87 Difference]: Start difference. First operand 418 states and 561 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:51:39,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:39,806 INFO L93 Difference]: Finished difference Result 1300 states and 1747 transitions. [2022-11-02 19:51:39,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:51:39,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 97 [2022-11-02 19:51:39,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:39,812 INFO L225 Difference]: With dead ends: 1300 [2022-11-02 19:51:39,812 INFO L226 Difference]: Without dead ends: 990 [2022-11-02 19:51:39,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:51:39,815 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 126 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:39,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 314 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:51:39,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2022-11-02 19:51:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 450. [2022-11-02 19:51:39,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 414 states have (on average 1.28743961352657) internal successors, (533), 414 states have internal predecessors, (533), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-02 19:51:39,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 601 transitions. [2022-11-02 19:51:39,902 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 601 transitions. Word has length 97 [2022-11-02 19:51:39,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:39,903 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 601 transitions. [2022-11-02 19:51:39,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:51:39,904 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 601 transitions. [2022-11-02 19:51:39,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-02 19:51:39,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:39,906 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:51:39,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:40,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:40,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:40,311 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:40,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:40,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1395870613, now seen corresponding path program 1 times [2022-11-02 19:51:40,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:40,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561061520] [2022-11-02 19:51:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:40,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:40,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:40,314 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:40,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 19:51:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:40,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 19:51:40,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 19:51:41,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:43,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:43,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561061520] [2022-11-02 19:51:43,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561061520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:43,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [213756388] [2022-11-02 19:51:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:43,022 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:51:43,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:51:43,023 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:51:43,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-02 19:51:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:51:43,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 19:51:43,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:45,043 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 19:51:45,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:45,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [213756388] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:45,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:51:45,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 12 [2022-11-02 19:51:45,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468836808] [2022-11-02 19:51:45,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:51:45,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 19:51:45,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:45,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 19:51:45,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:51:45,453 INFO L87 Difference]: Start difference. First operand 450 states and 601 transitions. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-02 19:51:46,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:46,090 INFO L93 Difference]: Finished difference Result 952 states and 1267 transitions. [2022-11-02 19:51:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 19:51:46,091 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 97 [2022-11-02 19:51:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:46,095 INFO L225 Difference]: With dead ends: 952 [2022-11-02 19:51:46,096 INFO L226 Difference]: Without dead ends: 830 [2022-11-02 19:51:46,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2022-11-02 19:51:46,098 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 303 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:46,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 411 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 100 Invalid, 0 Unknown, 74 Unchecked, 0.3s Time] [2022-11-02 19:51:46,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-11-02 19:51:46,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 666. [2022-11-02 19:51:46,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 614 states have (on average 1.278501628664495) internal successors, (785), 614 states have internal predecessors, (785), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-02 19:51:46,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 885 transitions. [2022-11-02 19:51:46,237 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 885 transitions. Word has length 97 [2022-11-02 19:51:46,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:46,237 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 885 transitions. [2022-11-02 19:51:46,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-02 19:51:46,238 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 885 transitions. [2022-11-02 19:51:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 19:51:46,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:46,246 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:51:46,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:46,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:46,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:46,653 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:46,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash 720898115, now seen corresponding path program 2 times [2022-11-02 19:51:46,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:46,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573603803] [2022-11-02 19:51:46,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:51:46,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:46,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:46,657 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:46,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 19:51:47,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:51:47,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:51:47,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-02 19:51:47,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 125 proven. 61 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 19:51:48,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:50,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:51:50,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573603803] [2022-11-02 19:51:50,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573603803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:51:50,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [921443380] [2022-11-02 19:51:50,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:51:50,569 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:51:50,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:51:50,577 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:51:50,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-02 19:51:51,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:51:51,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:51:51,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-02 19:51:51,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:51:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 19:51:54,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:51:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 19:51:56,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [921443380] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:51:56,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:51:56,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 30 [2022-11-02 19:51:56,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092571964] [2022-11-02 19:51:56,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:51:56,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 19:51:56,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:51:56,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 19:51:56,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1285, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 19:51:56,486 INFO L87 Difference]: Start difference. First operand 666 states and 885 transitions. Second operand has 30 states, 29 states have (on average 9.620689655172415) internal successors, (279), 30 states have internal predecessors, (279), 13 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 13 states have call predecessors, (24), 13 states have call successors, (24) [2022-11-02 19:51:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:51:59,005 INFO L93 Difference]: Finished difference Result 944 states and 1253 transitions. [2022-11-02 19:51:59,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 19:51:59,006 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 9.620689655172415) internal successors, (279), 30 states have internal predecessors, (279), 13 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 13 states have call predecessors, (24), 13 states have call successors, (24) Word has length 134 [2022-11-02 19:51:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:51:59,009 INFO L225 Difference]: With dead ends: 944 [2022-11-02 19:51:59,009 INFO L226 Difference]: Without dead ends: 714 [2022-11-02 19:51:59,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 447 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=334, Invalid=2318, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 19:51:59,012 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 496 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:51:59,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1101 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 461 Invalid, 0 Unknown, 161 Unchecked, 1.0s Time] [2022-11-02 19:51:59,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-11-02 19:51:59,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 714. [2022-11-02 19:51:59,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 662 states have (on average 1.2643504531722054) internal successors, (837), 662 states have internal predecessors, (837), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-02 19:51:59,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 937 transitions. [2022-11-02 19:51:59,166 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 937 transitions. Word has length 134 [2022-11-02 19:51:59,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:51:59,166 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 937 transitions. [2022-11-02 19:51:59,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 9.620689655172415) internal successors, (279), 30 states have internal predecessors, (279), 13 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 13 states have call predecessors, (24), 13 states have call successors, (24) [2022-11-02 19:51:59,167 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 937 transitions. [2022-11-02 19:51:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 19:51:59,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:51:59,171 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:51:59,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:59,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 19:51:59,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:51:59,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:51:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:51:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash -123107387, now seen corresponding path program 1 times [2022-11-02 19:51:59,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:51:59,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352818865] [2022-11-02 19:51:59,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:51:59,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:51:59,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:51:59,583 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:51:59,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 19:52:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:00,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:52:00,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 102 proven. 38 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-02 19:52:00,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:52:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-02 19:52:00,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:00,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352818865] [2022-11-02 19:52:00,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352818865] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 19:52:00,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:52:00,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 19:52:00,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535267507] [2022-11-02 19:52:00,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:00,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:52:00,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:00,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:52:00,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:52:00,403 INFO L87 Difference]: Start difference. First operand 714 states and 937 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:52:00,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:00,658 INFO L93 Difference]: Finished difference Result 1578 states and 2036 transitions. [2022-11-02 19:52:00,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:52:00,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 134 [2022-11-02 19:52:00,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:00,663 INFO L225 Difference]: With dead ends: 1578 [2022-11-02 19:52:00,663 INFO L226 Difference]: Without dead ends: 1044 [2022-11-02 19:52:00,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:52:00,666 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 74 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:00,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 215 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:52:00,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2022-11-02 19:52:00,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 786. [2022-11-02 19:52:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 734 states have (on average 1.2547683923705721) internal successors, (921), 734 states have internal predecessors, (921), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-02 19:52:00,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1021 transitions. [2022-11-02 19:52:00,803 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1021 transitions. Word has length 134 [2022-11-02 19:52:00,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:00,803 INFO L495 AbstractCegarLoop]: Abstraction has 786 states and 1021 transitions. [2022-11-02 19:52:00,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:52:00,804 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1021 transitions. [2022-11-02 19:52:00,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 19:52:00,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:00,808 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:00,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:01,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:01,031 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:52:01,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:01,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1445097415, now seen corresponding path program 1 times [2022-11-02 19:52:01,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:01,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420044269] [2022-11-02 19:52:01,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:01,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:01,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:01,034 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:01,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 19:52:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:01,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:52:01,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 94 proven. 46 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-02 19:52:01,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:52:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-02 19:52:01,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:01,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420044269] [2022-11-02 19:52:01,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420044269] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 19:52:01,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:52:01,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 19:52:01,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263243052] [2022-11-02 19:52:01,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:01,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:52:01,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:01,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:52:01,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:52:01,885 INFO L87 Difference]: Start difference. First operand 786 states and 1021 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:52:02,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:02,256 INFO L93 Difference]: Finished difference Result 2158 states and 2784 transitions. [2022-11-02 19:52:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:52:02,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 134 [2022-11-02 19:52:02,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:02,260 INFO L225 Difference]: With dead ends: 2158 [2022-11-02 19:52:02,261 INFO L226 Difference]: Without dead ends: 1552 [2022-11-02 19:52:02,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:52:02,262 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 69 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:02,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 222 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:52:02,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2022-11-02 19:52:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 834. [2022-11-02 19:52:02,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 782 states have (on average 1.2468030690537084) internal successors, (975), 782 states have internal predecessors, (975), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-02 19:52:02,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1075 transitions. [2022-11-02 19:52:02,412 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1075 transitions. Word has length 134 [2022-11-02 19:52:02,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:02,413 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 1075 transitions. [2022-11-02 19:52:02,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:52:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1075 transitions. [2022-11-02 19:52:02,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 19:52:02,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:02,418 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:02,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:02,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:02,630 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:52:02,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:02,631 INFO L85 PathProgramCache]: Analyzing trace with hash -926641847, now seen corresponding path program 1 times [2022-11-02 19:52:02,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:02,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119674325] [2022-11-02 19:52:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:02,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:02,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:02,634 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:02,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 19:52:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:03,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:52:03,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 86 proven. 54 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-02 19:52:03,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:52:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-02 19:52:03,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:03,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119674325] [2022-11-02 19:52:03,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119674325] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 19:52:03,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:52:03,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 19:52:03,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22458484] [2022-11-02 19:52:03,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:03,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:52:03,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:03,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:52:03,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:52:03,614 INFO L87 Difference]: Start difference. First operand 834 states and 1075 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:52:03,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:03,837 INFO L93 Difference]: Finished difference Result 1560 states and 1982 transitions. [2022-11-02 19:52:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:52:03,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 134 [2022-11-02 19:52:03,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:03,842 INFO L225 Difference]: With dead ends: 1560 [2022-11-02 19:52:03,842 INFO L226 Difference]: Without dead ends: 1040 [2022-11-02 19:52:03,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:52:03,851 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 64 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:03,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 229 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:52:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2022-11-02 19:52:04,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 870. [2022-11-02 19:52:04,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 818 states have (on average 1.243276283618582) internal successors, (1017), 818 states have internal predecessors, (1017), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-02 19:52:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1117 transitions. [2022-11-02 19:52:04,051 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1117 transitions. Word has length 134 [2022-11-02 19:52:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:04,051 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1117 transitions. [2022-11-02 19:52:04,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:52:04,052 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1117 transitions. [2022-11-02 19:52:04,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 19:52:04,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:04,056 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:04,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:04,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:04,271 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:52:04,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:04,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1562887115, now seen corresponding path program 1 times [2022-11-02 19:52:04,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:04,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826151726] [2022-11-02 19:52:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:04,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:04,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:04,274 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:04,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 19:52:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:04,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 19:52:04,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 12 proven. 92 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-02 19:52:07,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:52:08,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:08,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826151726] [2022-11-02 19:52:08,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826151726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:52:08,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1418570045] [2022-11-02 19:52:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:08,110 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:52:08,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:52:08,111 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:52:08,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-02 19:52:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:09,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 19:52:09,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 12 proven. 92 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-02 19:52:11,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:52:11,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1418570045] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:52:11,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:52:11,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2022-11-02 19:52:11,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102860847] [2022-11-02 19:52:11,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:52:11,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 19:52:11,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:11,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 19:52:11,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:52:11,523 INFO L87 Difference]: Start difference. First operand 870 states and 1117 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-02 19:52:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:14,876 INFO L93 Difference]: Finished difference Result 2158 states and 2739 transitions. [2022-11-02 19:52:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 19:52:14,879 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 134 [2022-11-02 19:52:14,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:14,887 INFO L225 Difference]: With dead ends: 2158 [2022-11-02 19:52:14,888 INFO L226 Difference]: Without dead ends: 1844 [2022-11-02 19:52:14,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=449, Invalid=1713, Unknown=0, NotChecked=0, Total=2162 [2022-11-02 19:52:14,891 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 555 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:14,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1281 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 19:52:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-11-02 19:52:15,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1218. [2022-11-02 19:52:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 1150 states have (on average 1.228695652173913) internal successors, (1413), 1150 states have internal predecessors, (1413), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-11-02 19:52:15,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1545 transitions. [2022-11-02 19:52:15,139 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1545 transitions. Word has length 134 [2022-11-02 19:52:15,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:15,140 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 1545 transitions. [2022-11-02 19:52:15,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-02 19:52:15,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1545 transitions. [2022-11-02 19:52:15,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 19:52:15,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:15,145 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:15,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:15,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:15,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:52:15,554 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:52:15,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:15,555 INFO L85 PathProgramCache]: Analyzing trace with hash 696282187, now seen corresponding path program 1 times [2022-11-02 19:52:15,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:52:15,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019537579] [2022-11-02 19:52:15,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:15,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:52:15,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:52:15,559 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:52:15,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 19:52:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:16,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 19:52:16,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 12 proven. 92 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-02 19:52:18,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:52:20,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:52:20,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019537579] [2022-11-02 19:52:20,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019537579] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:52:20,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [171592563] [2022-11-02 19:52:20,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:20,067 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:52:20,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:52:20,069 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:52:20,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-02 19:52:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:21,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 19:52:21,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 19:52:23,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:52:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 19:52:25,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [171592563] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:52:25,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:52:25,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 11] total 34 [2022-11-02 19:52:25,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707783798] [2022-11-02 19:52:25,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:52:25,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 19:52:25,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:52:25,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 19:52:25,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1226, Unknown=0, NotChecked=0, Total=1332 [2022-11-02 19:52:25,729 INFO L87 Difference]: Start difference. First operand 1218 states and 1545 transitions. Second operand has 34 states, 34 states have (on average 7.5588235294117645) internal successors, (257), 34 states have internal predecessors, (257), 11 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 11 states have call predecessors, (22), 11 states have call successors, (22) [2022-11-02 19:53:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:02,870 INFO L93 Difference]: Finished difference Result 5403 states and 6890 transitions. [2022-11-02 19:53:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-11-02 19:53:02,871 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.5588235294117645) internal successors, (257), 34 states have internal predecessors, (257), 11 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 11 states have call predecessors, (22), 11 states have call successors, (22) Word has length 134 [2022-11-02 19:53:02,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:02,888 INFO L225 Difference]: With dead ends: 5403 [2022-11-02 19:53:02,888 INFO L226 Difference]: Without dead ends: 5157 [2022-11-02 19:53:02,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19588 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=5483, Invalid=46273, Unknown=0, NotChecked=0, Total=51756 [2022-11-02 19:53:02,905 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 4615 mSDsluCounter, 4979 mSDsCounter, 0 mSdLazyCounter, 4905 mSolverCounterSat, 1117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4615 SdHoareTripleChecker+Valid, 5313 SdHoareTripleChecker+Invalid, 6022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1117 IncrementalHoareTripleChecker+Valid, 4905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:02,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4615 Valid, 5313 Invalid, 6022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1117 Valid, 4905 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-02 19:53:02,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2022-11-02 19:53:03,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 2056. [2022-11-02 19:53:03,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 1940 states have (on average 1.2211340206185568) internal successors, (2369), 1940 states have internal predecessors, (2369), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2022-11-02 19:53:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2597 transitions. [2022-11-02 19:53:03,322 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2597 transitions. Word has length 134 [2022-11-02 19:53:03,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:03,323 INFO L495 AbstractCegarLoop]: Abstraction has 2056 states and 2597 transitions. [2022-11-02 19:53:03,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.5588235294117645) internal successors, (257), 34 states have internal predecessors, (257), 11 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 11 states have call predecessors, (22), 11 states have call successors, (22) [2022-11-02 19:53:03,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2597 transitions. [2022-11-02 19:53:03,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-02 19:53:03,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:03,333 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:03,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:03,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-02 19:53:03,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:03,743 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:03,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:03,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1800283527, now seen corresponding path program 2 times [2022-11-02 19:53:03,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:03,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482064683] [2022-11-02 19:53:03,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:53:03,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:03,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:03,747 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:03,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 19:53:04,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:53:04,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:53:04,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 19:53:04,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 487 proven. 102 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-02 19:53:05,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:06,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:06,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482064683] [2022-11-02 19:53:06,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482064683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:06,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1959909530] [2022-11-02 19:53:06,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:53:06,023 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:53:06,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:53:06,024 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:53:06,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-02 19:53:07,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:53:07,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:53:07,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 19:53:07,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 487 proven. 102 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-02 19:53:09,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:09,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1959909530] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:09,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:53:09,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-02 19:53:09,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560565125] [2022-11-02 19:53:09,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:09,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 19:53:09,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:09,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 19:53:09,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-11-02 19:53:09,554 INFO L87 Difference]: Start difference. First operand 2056 states and 2597 transitions. Second operand has 22 states, 22 states have (on average 8.454545454545455) internal successors, (186), 22 states have internal predecessors, (186), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-02 19:53:11,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:11,375 INFO L93 Difference]: Finished difference Result 5250 states and 6576 transitions. [2022-11-02 19:53:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 19:53:11,375 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.454545454545455) internal successors, (186), 22 states have internal predecessors, (186), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 245 [2022-11-02 19:53:11,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:11,385 INFO L225 Difference]: With dead ends: 5250 [2022-11-02 19:53:11,385 INFO L226 Difference]: Without dead ends: 4006 [2022-11-02 19:53:11,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 778 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=291, Invalid=1431, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 19:53:11,389 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 163 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 441 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:11,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1327 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 254 Invalid, 0 Unknown, 441 Unchecked, 0.5s Time] [2022-11-02 19:53:11,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4006 states. [2022-11-02 19:53:11,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4006 to 2836. [2022-11-02 19:53:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2836 states, 2676 states have (on average 1.2047832585949179) internal successors, (3224), 2676 states have internal predecessors, (3224), 158 states have call successors, (158), 1 states have call predecessors, (158), 1 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2022-11-02 19:53:11,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 3540 transitions. [2022-11-02 19:53:11,827 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 3540 transitions. Word has length 245 [2022-11-02 19:53:11,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:11,828 INFO L495 AbstractCegarLoop]: Abstraction has 2836 states and 3540 transitions. [2022-11-02 19:53:11,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.454545454545455) internal successors, (186), 22 states have internal predecessors, (186), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-02 19:53:11,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 3540 transitions. [2022-11-02 19:53:11,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-02 19:53:11,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:11,840 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:11,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:12,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:12,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:12,253 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:12,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:12,254 INFO L85 PathProgramCache]: Analyzing trace with hash -849432563, now seen corresponding path program 3 times [2022-11-02 19:53:12,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:12,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020926791] [2022-11-02 19:53:12,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 19:53:12,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:12,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:12,258 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:12,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 19:53:12,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 19:53:12,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:53:12,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-02 19:53:12,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:15,979 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 145 proven. 106 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2022-11-02 19:53:15,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:17,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:17,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020926791] [2022-11-02 19:53:17,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020926791] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:17,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1828687295] [2022-11-02 19:53:17,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 19:53:17,134 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:53:17,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:53:17,136 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:53:17,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-02 19:53:18,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 19:53:18,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:53:18,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 19:53:18,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 145 proven. 106 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2022-11-02 19:53:23,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:23,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1828687295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:23,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:53:23,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 29 [2022-11-02 19:53:23,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808118340] [2022-11-02 19:53:23,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:23,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 19:53:23,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:23,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 19:53:23,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1191, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 19:53:23,442 INFO L87 Difference]: Start difference. First operand 2836 states and 3540 transitions. Second operand has 29 states, 27 states have (on average 5.407407407407407) internal successors, (146), 27 states have internal predecessors, (146), 8 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-02 19:53:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:25,278 INFO L93 Difference]: Finished difference Result 3846 states and 4841 transitions. [2022-11-02 19:53:25,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 19:53:25,279 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 5.407407407407407) internal successors, (146), 27 states have internal predecessors, (146), 8 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 245 [2022-11-02 19:53:25,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:25,292 INFO L225 Difference]: With dead ends: 3846 [2022-11-02 19:53:25,293 INFO L226 Difference]: Without dead ends: 3493 [2022-11-02 19:53:25,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 546 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=380, Invalid=1876, Unknown=0, NotChecked=0, Total=2256 [2022-11-02 19:53:25,296 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 71 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:25,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 576 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 172 Unchecked, 0.1s Time] [2022-11-02 19:53:25,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2022-11-02 19:53:25,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 2861. [2022-11-02 19:53:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2861 states, 2703 states have (on average 1.198298187199408) internal successors, (3239), 2703 states have internal predecessors, (3239), 156 states have call successors, (156), 1 states have call predecessors, (156), 1 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2022-11-02 19:53:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 3551 transitions. [2022-11-02 19:53:25,766 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 3551 transitions. Word has length 245 [2022-11-02 19:53:25,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:25,767 INFO L495 AbstractCegarLoop]: Abstraction has 2861 states and 3551 transitions. [2022-11-02 19:53:25,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 5.407407407407407) internal successors, (146), 27 states have internal predecessors, (146), 8 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-02 19:53:25,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 3551 transitions. [2022-11-02 19:53:25,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-02 19:53:25,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:25,778 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:25,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:26,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:26,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:26,193 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:26,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:26,193 INFO L85 PathProgramCache]: Analyzing trace with hash -816790189, now seen corresponding path program 1 times [2022-11-02 19:53:26,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:26,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139458672] [2022-11-02 19:53:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:26,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:26,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:26,197 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:26,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 19:53:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:27,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 19:53:27,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 506 proven. 135 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-02 19:53:28,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:30,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:30,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139458672] [2022-11-02 19:53:30,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139458672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:30,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1421100008] [2022-11-02 19:53:30,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:30,861 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:53:30,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:53:30,863 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:53:30,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-02 19:53:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:32,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 19:53:32,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2022-11-02 19:53:33,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:35,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1421100008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:35,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:53:35,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2022-11-02 19:53:35,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78643547] [2022-11-02 19:53:35,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:35,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 19:53:35,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:35,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 19:53:35,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1373, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 19:53:35,084 INFO L87 Difference]: Start difference. First operand 2861 states and 3551 transitions. Second operand has 23 states, 22 states have (on average 8.409090909090908) internal successors, (185), 23 states have internal predecessors, (185), 7 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-02 19:53:44,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:44,753 INFO L93 Difference]: Finished difference Result 6447 states and 7987 transitions. [2022-11-02 19:53:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-02 19:53:44,754 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 8.409090909090908) internal successors, (185), 23 states have internal predecessors, (185), 7 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 245 [2022-11-02 19:53:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:44,778 INFO L225 Difference]: With dead ends: 6447 [2022-11-02 19:53:44,778 INFO L226 Difference]: Without dead ends: 4942 [2022-11-02 19:53:44,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 618 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 2568 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1212, Invalid=9708, Unknown=0, NotChecked=0, Total=10920 [2022-11-02 19:53:44,783 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 700 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 3830 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 561 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:44,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 3830 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2229 Invalid, 0 Unknown, 561 Unchecked, 3.8s Time] [2022-11-02 19:53:44,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4942 states. [2022-11-02 19:53:45,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4942 to 2768. [2022-11-02 19:53:45,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2616 states have (on average 1.198394495412844) internal successors, (3135), 2616 states have internal predecessors, (3135), 150 states have call successors, (150), 1 states have call predecessors, (150), 1 states have return successors, (150), 150 states have call predecessors, (150), 150 states have call successors, (150) [2022-11-02 19:53:45,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 3435 transitions. [2022-11-02 19:53:45,320 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 3435 transitions. Word has length 245 [2022-11-02 19:53:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:45,320 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 3435 transitions. [2022-11-02 19:53:45,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 8.409090909090908) internal successors, (185), 23 states have internal predecessors, (185), 7 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-02 19:53:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 3435 transitions. [2022-11-02 19:53:45,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-02 19:53:45,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:45,330 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:45,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:45,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2022-11-02 19:53:45,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt [2022-11-02 19:53:45,755 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash -631957593, now seen corresponding path program 4 times [2022-11-02 19:53:45,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:45,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102032930] [2022-11-02 19:53:45,757 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 19:53:45,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:45,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:45,758 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:45,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 19:53:46,527 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 19:53:46,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:53:46,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-02 19:53:46,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:48,149 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 410 proven. 203 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-02 19:53:48,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:49,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:49,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102032930] [2022-11-02 19:53:49,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102032930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:49,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1968861741] [2022-11-02 19:53:49,296 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 19:53:49,296 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:53:49,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:53:49,298 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:53:49,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-02 19:53:50,936 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 19:53:50,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:53:51,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 19:53:51,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 36 proven. 30 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-11-02 19:53:52,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:53,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1968861741] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:53,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:53:53,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 26 [2022-11-02 19:53:53,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579715483] [2022-11-02 19:53:53,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:53,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 19:53:53,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:53,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 19:53:53,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1851, Unknown=0, NotChecked=0, Total=1980 [2022-11-02 19:53:53,829 INFO L87 Difference]: Start difference. First operand 2768 states and 3435 transitions. Second operand has 26 states, 26 states have (on average 7.3076923076923075) internal successors, (190), 26 states have internal predecessors, (190), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-02 19:54:01,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:01,029 INFO L93 Difference]: Finished difference Result 4730 states and 5895 transitions. [2022-11-02 19:54:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-02 19:54:01,030 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.3076923076923075) internal successors, (190), 26 states have internal predecessors, (190), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 245 [2022-11-02 19:54:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:01,060 INFO L225 Difference]: With dead ends: 4730 [2022-11-02 19:54:01,061 INFO L226 Difference]: Without dead ends: 3492 [2022-11-02 19:54:01,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2168 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1176, Invalid=10166, Unknown=0, NotChecked=0, Total=11342 [2022-11-02 19:54:01,066 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 188 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1032 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:01,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 2214 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 507 Invalid, 0 Unknown, 1032 Unchecked, 0.8s Time] [2022-11-02 19:54:01,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-11-02 19:54:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3006. [2022-11-02 19:54:01,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 2838 states have (on average 1.193798449612403) internal successors, (3388), 2838 states have internal predecessors, (3388), 166 states have call successors, (166), 1 states have call predecessors, (166), 1 states have return successors, (166), 166 states have call predecessors, (166), 166 states have call successors, (166) [2022-11-02 19:54:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 3720 transitions. [2022-11-02 19:54:01,894 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 3720 transitions. Word has length 245 [2022-11-02 19:54:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:01,894 INFO L495 AbstractCegarLoop]: Abstraction has 3006 states and 3720 transitions. [2022-11-02 19:54:01,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.3076923076923075) internal successors, (190), 26 states have internal predecessors, (190), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-02 19:54:01,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 3720 transitions. [2022-11-02 19:54:01,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-02 19:54:01,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:01,902 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:01,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:02,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:02,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt [2022-11-02 19:54:02,327 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:02,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash 320282203, now seen corresponding path program 2 times [2022-11-02 19:54:02,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:02,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4129375] [2022-11-02 19:54:02,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:54:02,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:02,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:02,331 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:02,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 19:54:03,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:54:03,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:54:03,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 19:54:03,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 431 proven. 238 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2022-11-02 19:54:05,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:54:07,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:07,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4129375] [2022-11-02 19:54:07,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4129375] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:54:07,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1552890074] [2022-11-02 19:54:07,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:54:07,828 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:54:07,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:54:07,829 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:54:07,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-02 19:54:08,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:54:08,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:54:09,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:54:09,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-11-02 19:54:09,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:09,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1552890074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:09,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:54:09,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 20 [2022-11-02 19:54:09,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781942261] [2022-11-02 19:54:09,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:09,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:09,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:09,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:09,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2022-11-02 19:54:09,261 INFO L87 Difference]: Start difference. First operand 3006 states and 3720 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:54:09,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:09,793 INFO L93 Difference]: Finished difference Result 4832 states and 5952 transitions. [2022-11-02 19:54:09,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:54:09,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 245 [2022-11-02 19:54:09,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:09,800 INFO L225 Difference]: With dead ends: 4832 [2022-11-02 19:54:09,800 INFO L226 Difference]: Without dead ends: 2146 [2022-11-02 19:54:09,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 583 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-11-02 19:54:09,804 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 90 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:09,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 210 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:54:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2022-11-02 19:54:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 2100. [2022-11-02 19:54:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 1984 states have (on average 1.168850806451613) internal successors, (2319), 1984 states have internal predecessors, (2319), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2022-11-02 19:54:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2547 transitions. [2022-11-02 19:54:10,395 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2547 transitions. Word has length 245 [2022-11-02 19:54:10,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:10,396 INFO L495 AbstractCegarLoop]: Abstraction has 2100 states and 2547 transitions. [2022-11-02 19:54:10,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:54:10,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2547 transitions. [2022-11-02 19:54:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-02 19:54:10,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:10,403 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:10,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:10,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:10,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:10,811 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:10,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:10,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1641669489, now seen corresponding path program 3 times [2022-11-02 19:54:10,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:10,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895443487] [2022-11-02 19:54:10,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 19:54:10,814 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:10,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:10,816 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:10,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 19:54:11,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-02 19:54:11,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:54:11,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-02 19:54:11,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 24 proven. 464 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-11-02 19:54:26,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:54:31,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:31,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895443487] [2022-11-02 19:54:31,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895443487] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:54:31,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1962276930] [2022-11-02 19:54:31,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 19:54:31,382 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 19:54:31,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 19:54:31,383 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 19:54:31,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdb89197-98e5-4f8a-b029-9cd4f7c020c5/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-11-02 19:54:33,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-02 19:54:33,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:54:33,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-02 19:54:33,114 INFO L286 TraceCheckSpWp]: Computing forward predicates...