./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN --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 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 --- 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-6b4ec56 [2022-11-20 11:12:18,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:12:18,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:12:18,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:12:18,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:12:18,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:12:18,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:12:18,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:12:18,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:12:18,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:12:18,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:12:18,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:12:18,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:12:18,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:12:18,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:12:18,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:12:18,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:12:18,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:12:18,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:12:18,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:12:18,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:12:18,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:12:18,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:12:18,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:12:18,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:12:18,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:12:18,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:12:19,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:12:19,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:12:19,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:12:19,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:12:19,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:12:19,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:12:19,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:12:19,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:12:19,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:12:19,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:12:19,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:12:19,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:12:19,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:12:19,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:12:19,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:12:19,072 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:12:19,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:12:19,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:12:19,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:12:19,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:12:19,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:12:19,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:12:19,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:12:19,078 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:12:19,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:12:19,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:12:19,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:12:19,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:12:19,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:12:19,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:12:19,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:12:19,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:12:19,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:12:19,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:12:19,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:12:19,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:12:19,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:12:19,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:12:19,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:12:19,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:12:19,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:12:19,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:12:19,087 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:12:19,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:12:19,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:12:19,088 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_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 [2022-11-20 11:12:19,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:12:19,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:12:19,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:12:19,503 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:12:19,504 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:12:19,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2022-11-20 11:12:23,426 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:12:24,299 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:12:24,300 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2022-11-20 11:12:24,363 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/data/96b322fa8/fabf8f4836d54de1b5248e3a10164133/FLAGac8ef6cbd [2022-11-20 11:12:24,384 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/data/96b322fa8/fabf8f4836d54de1b5248e3a10164133 [2022-11-20 11:12:24,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:12:24,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:12:24,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:24,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:12:24,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:12:24,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:24" (1/1) ... [2022-11-20 11:12:24,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e320b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:24, skipping insertion in model container [2022-11-20 11:12:24,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:24" (1/1) ... [2022-11-20 11:12:24,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:12:24,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:12:27,749 WARN L237 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_24f31ef1-5434-4137-9b2e-172d026d20bd/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i[424236,424249] [2022-11-20 11:12:28,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:28,145 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:12:28,985 WARN L237 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_24f31ef1-5434-4137-9b2e-172d026d20bd/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i[424236,424249] [2022-11-20 11:12:29,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:29,168 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:12:29,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:29 WrapperNode [2022-11-20 11:12:29,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:29,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:12:29,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:12:29,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:12:29,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:29" (1/1) ... [2022-11-20 11:12:29,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:29" (1/1) ... [2022-11-20 11:12:30,107 INFO L138 Inliner]: procedures = 189, calls = 7161, calls flagged for inlining = 69, calls inlined = 54, statements flattened = 16750 [2022-11-20 11:12:30,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:12:30,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:12:30,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:12:30,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:12:30,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:29" (1/1) ... [2022-11-20 11:12:30,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:29" (1/1) ... [2022-11-20 11:12:30,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:29" (1/1) ... [2022-11-20 11:12:30,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:29" (1/1) ... [2022-11-20 11:12:30,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:29" (1/1) ... [2022-11-20 11:12:30,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:29" (1/1) ... [2022-11-20 11:12:30,727 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:29" (1/1) ... [2022-11-20 11:12:30,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:29" (1/1) ... [2022-11-20 11:12:30,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:12:30,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:12:30,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:12:30,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:12:30,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:29" (1/1) ... [2022-11-20 11:12:30,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:12:30,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:31,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:12:31,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:12:31,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock [2022-11-20 11:12:31,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock [2022-11-20 11:12:31,194 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2022-11-20 11:12:31,194 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2022-11-20 11:12:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2022-11-20 11:12:31,195 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2022-11-20 11:12:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 11:12:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-20 11:12:31,197 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-20 11:12:31,197 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2022-11-20 11:12:31,197 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2022-11-20 11:12:31,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock [2022-11-20 11:12:31,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock [2022-11-20 11:12:31,198 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2022-11-20 11:12:31,198 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2022-11-20 11:12:31,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 11:12:31,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 11:12:31,198 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2022-11-20 11:12:31,199 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2022-11-20 11:12:31,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:12:31,199 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2022-11-20 11:12:31,199 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2022-11-20 11:12:31,199 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2022-11-20 11:12:31,200 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2022-11-20 11:12:31,200 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2022-11-20 11:12:31,200 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2022-11-20 11:12:31,200 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 11:12:31,200 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 11:12:31,201 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2022-11-20 11:12:31,201 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2022-11-20 11:12:31,201 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2022-11-20 11:12:31,201 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2022-11-20 11:12:31,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:12:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 11:12:31,215 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 11:12:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2022-11-20 11:12:31,216 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2022-11-20 11:12:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 11:12:31,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 11:12:31,218 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2022-11-20 11:12:31,218 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2022-11-20 11:12:31,218 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2022-11-20 11:12:31,218 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2022-11-20 11:12:31,219 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2022-11-20 11:12:31,219 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2022-11-20 11:12:31,219 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2022-11-20 11:12:31,220 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2022-11-20 11:12:31,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 11:12:31,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 11:12:31,220 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-20 11:12:31,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-20 11:12:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2022-11-20 11:12:31,221 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2022-11-20 11:12:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 11:12:31,221 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 11:12:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-20 11:12:31,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-20 11:12:31,223 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2022-11-20 11:12:31,223 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2022-11-20 11:12:31,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:12:31,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:12:31,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:12:31,224 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2022-11-20 11:12:31,224 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2022-11-20 11:12:31,225 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2022-11-20 11:12:31,225 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2022-11-20 11:12:31,225 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2022-11-20 11:12:31,225 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2022-11-20 11:12:31,225 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-20 11:12:31,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-20 11:12:31,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:12:31,226 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2022-11-20 11:12:31,226 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2022-11-20 11:12:31,226 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2022-11-20 11:12:31,226 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2022-11-20 11:12:31,227 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2022-11-20 11:12:31,227 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2022-11-20 11:12:31,227 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2022-11-20 11:12:31,227 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2022-11-20 11:12:31,227 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2022-11-20 11:12:31,228 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2022-11-20 11:12:31,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:12:31,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:12:31,229 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2022-11-20 11:12:31,229 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2022-11-20 11:12:31,230 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2022-11-20 11:12:31,230 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2022-11-20 11:12:31,230 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2022-11-20 11:12:31,230 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2022-11-20 11:12:31,230 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2022-11-20 11:12:31,248 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2022-11-20 11:12:31,248 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 11:12:31,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 11:12:31,248 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2022-11-20 11:12:31,249 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2022-11-20 11:12:31,249 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2022-11-20 11:12:31,249 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2022-11-20 11:12:31,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:12:31,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-20 11:12:31,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-20 11:12:31,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock [2022-11-20 11:12:31,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock [2022-11-20 11:12:31,251 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2022-11-20 11:12:31,251 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2022-11-20 11:12:31,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 11:12:31,252 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2022-11-20 11:12:31,252 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2022-11-20 11:12:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:12:31,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:12:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2022-11-20 11:12:31,253 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2022-11-20 11:12:33,148 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:12:33,152 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:12:53,269 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:12:53,319 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:12:53,320 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:12:53,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:53 BoogieIcfgContainer [2022-11-20 11:12:53,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:12:53,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:12:53,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:12:53,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:12:53,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:12:24" (1/3) ... [2022-11-20 11:12:53,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b44dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:53, skipping insertion in model container [2022-11-20 11:12:53,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:29" (2/3) ... [2022-11-20 11:12:53,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b44dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:53, skipping insertion in model container [2022-11-20 11:12:53,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:53" (3/3) ... [2022-11-20 11:12:53,355 INFO L112 eAbstractionObserver]: Analyzing ICFG main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2022-11-20 11:12:53,383 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:12:53,391 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:12:53,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:12:53,635 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;@19ea2267, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:12:53,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:12:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 5263 states, 3936 states have (on average 1.5360772357723578) internal successors, (6046), 3950 states have internal predecessors, (6046), 1277 states have call successors, (1277), 48 states have call predecessors, (1277), 48 states have return successors, (1277), 1276 states have call predecessors, (1277), 1277 states have call successors, (1277) [2022-11-20 11:12:53,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:12:53,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:53,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:53,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:12:53,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:53,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1438175812, now seen corresponding path program 1 times [2022-11-20 11:12:53,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:53,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504918306] [2022-11-20 11:12:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:53,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:55,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:55,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504918306] [2022-11-20 11:12:55,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504918306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:55,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:55,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:12:55,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289249573] [2022-11-20 11:12:55,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:55,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:12:55,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:55,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:12:55,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:12:55,638 INFO L87 Difference]: Start difference. First operand has 5263 states, 3936 states have (on average 1.5360772357723578) internal successors, (6046), 3950 states have internal predecessors, (6046), 1277 states have call successors, (1277), 48 states have call predecessors, (1277), 48 states have return successors, (1277), 1276 states have call predecessors, (1277), 1277 states have call successors, (1277) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:56,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:56,660 INFO L93 Difference]: Finished difference Result 10520 states and 17250 transitions. [2022-11-20 11:12:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:12:56,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:12:56,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:56,782 INFO L225 Difference]: With dead ends: 10520 [2022-11-20 11:12:56,783 INFO L226 Difference]: Without dead ends: 5256 [2022-11-20 11:12:56,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:12:56,897 INFO L413 NwaCegarLoop]: 8585 mSDtfsCounter, 8581 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8581 SdHoareTripleChecker+Valid, 8585 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:56,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8581 Valid, 8585 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:12:56,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2022-11-20 11:12:58,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 5256. [2022-11-20 11:12:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5256 states, 3932 states have (on average 1.5358596134282807) internal successors, (6039), 3943 states have internal predecessors, (6039), 1276 states have call successors, (1276), 48 states have call predecessors, (1276), 47 states have return successors, (1267), 1266 states have call predecessors, (1267), 1267 states have call successors, (1267) [2022-11-20 11:12:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 8582 transitions. [2022-11-20 11:12:58,211 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 8582 transitions. Word has length 8 [2022-11-20 11:12:58,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:58,212 INFO L495 AbstractCegarLoop]: Abstraction has 5256 states and 8582 transitions. [2022-11-20 11:12:58,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:58,213 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 8582 transitions. [2022-11-20 11:12:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:12:58,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:58,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:58,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:12:58,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:12:58,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:58,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1631280519, now seen corresponding path program 1 times [2022-11-20 11:12:58,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:58,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029289098] [2022-11-20 11:12:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:58,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:59,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:59,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029289098] [2022-11-20 11:12:59,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029289098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:59,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:59,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:12:59,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577462566] [2022-11-20 11:12:59,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:59,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:12:59,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:59,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:12:59,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:12:59,321 INFO L87 Difference]: Start difference. First operand 5256 states and 8582 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:00,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:00,052 INFO L93 Difference]: Finished difference Result 10580 states and 17275 transitions. [2022-11-20 11:13:00,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:13:00,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:13:00,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:00,126 INFO L225 Difference]: With dead ends: 10580 [2022-11-20 11:13:00,126 INFO L226 Difference]: Without dead ends: 5327 [2022-11-20 11:13:00,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:00,206 INFO L413 NwaCegarLoop]: 8582 mSDtfsCounter, 8312 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8312 SdHoareTripleChecker+Valid, 8945 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:00,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8312 Valid, 8945 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:13:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5327 states. [2022-11-20 11:13:01,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5327 to 5324. [2022-11-20 11:13:01,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5324 states, 3992 states have (on average 1.5363226452905812) internal successors, (6133), 4001 states have internal predecessors, (6133), 1279 states have call successors, (1279), 54 states have call predecessors, (1279), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2022-11-20 11:13:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5324 states to 5324 states and 8683 transitions. [2022-11-20 11:13:01,609 INFO L78 Accepts]: Start accepts. Automaton has 5324 states and 8683 transitions. Word has length 9 [2022-11-20 11:13:01,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:01,610 INFO L495 AbstractCegarLoop]: Abstraction has 5324 states and 8683 transitions. [2022-11-20 11:13:01,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:01,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5324 states and 8683 transitions. [2022-11-20 11:13:01,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:13:01,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:01,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:01,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:13:01,613 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:01,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:01,613 INFO L85 PathProgramCache]: Analyzing trace with hash -972403289, now seen corresponding path program 1 times [2022-11-20 11:13:01,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:01,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619257442] [2022-11-20 11:13:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:01,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:02,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:02,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619257442] [2022-11-20 11:13:02,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619257442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:02,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:02,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:13:02,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306367111] [2022-11-20 11:13:02,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:02,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:13:02,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:02,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:13:02,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:02,600 INFO L87 Difference]: Start difference. First operand 5324 states and 8683 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:03,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:03,256 INFO L93 Difference]: Finished difference Result 5326 states and 8684 transitions. [2022-11-20 11:13:03,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:13:03,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:13:03,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:03,323 INFO L225 Difference]: With dead ends: 5326 [2022-11-20 11:13:03,323 INFO L226 Difference]: Without dead ends: 5323 [2022-11-20 11:13:03,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:03,337 INFO L413 NwaCegarLoop]: 8575 mSDtfsCounter, 8569 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8569 SdHoareTripleChecker+Valid, 8575 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:03,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8569 Valid, 8575 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:13:03,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2022-11-20 11:13:04,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 5323. [2022-11-20 11:13:04,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 3992 states have (on average 1.5360721442885772) internal successors, (6132), 4000 states have internal predecessors, (6132), 1278 states have call successors, (1278), 54 states have call predecessors, (1278), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2022-11-20 11:13:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 8681 transitions. [2022-11-20 11:13:04,977 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 8681 transitions. Word has length 10 [2022-11-20 11:13:04,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:04,977 INFO L495 AbstractCegarLoop]: Abstraction has 5323 states and 8681 transitions. [2022-11-20 11:13:04,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:04,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 8681 transitions. [2022-11-20 11:13:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:13:04,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:04,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:04,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:13:04,981 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:04,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:04,982 INFO L85 PathProgramCache]: Analyzing trace with hash -82217846, now seen corresponding path program 1 times [2022-11-20 11:13:04,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:04,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228939850] [2022-11-20 11:13:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:04,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:05,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:05,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228939850] [2022-11-20 11:13:05,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228939850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:05,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:05,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:13:05,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548867502] [2022-11-20 11:13:05,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:05,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:13:05,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:05,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:13:05,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:05,635 INFO L87 Difference]: Start difference. First operand 5323 states and 8681 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:06,174 INFO L93 Difference]: Finished difference Result 5325 states and 8682 transitions. [2022-11-20 11:13:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:13:06,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 11:13:06,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:06,235 INFO L225 Difference]: With dead ends: 5325 [2022-11-20 11:13:06,235 INFO L226 Difference]: Without dead ends: 5322 [2022-11-20 11:13:06,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:06,255 INFO L413 NwaCegarLoop]: 8573 mSDtfsCounter, 8566 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8566 SdHoareTripleChecker+Valid, 8573 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:06,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8566 Valid, 8573 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:13:06,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5322 states. [2022-11-20 11:13:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5322 to 5322. [2022-11-20 11:13:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5322 states, 3992 states have (on average 1.5358216432865732) internal successors, (6131), 3999 states have internal predecessors, (6131), 1277 states have call successors, (1277), 54 states have call predecessors, (1277), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2022-11-20 11:13:07,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5322 states to 5322 states and 8679 transitions. [2022-11-20 11:13:07,366 INFO L78 Accepts]: Start accepts. Automaton has 5322 states and 8679 transitions. Word has length 11 [2022-11-20 11:13:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:07,367 INFO L495 AbstractCegarLoop]: Abstraction has 5322 states and 8679 transitions. [2022-11-20 11:13:07,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:07,367 INFO L276 IsEmpty]: Start isEmpty. Operand 5322 states and 8679 transitions. [2022-11-20 11:13:07,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:13:07,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:07,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:07,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:13:07,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:07,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:07,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1743731978, now seen corresponding path program 1 times [2022-11-20 11:13:07,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:07,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876844409] [2022-11-20 11:13:07,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:07,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:08,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:08,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876844409] [2022-11-20 11:13:08,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876844409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:08,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:08,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:13:08,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13406300] [2022-11-20 11:13:08,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:08,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:13:08,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:08,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:13:08,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:08,087 INFO L87 Difference]: Start difference. First operand 5322 states and 8679 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:08,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:08,649 INFO L93 Difference]: Finished difference Result 5324 states and 8680 transitions. [2022-11-20 11:13:08,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:13:08,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 11:13:08,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:08,732 INFO L225 Difference]: With dead ends: 5324 [2022-11-20 11:13:08,732 INFO L226 Difference]: Without dead ends: 5321 [2022-11-20 11:13:08,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:08,741 INFO L413 NwaCegarLoop]: 8571 mSDtfsCounter, 8563 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8563 SdHoareTripleChecker+Valid, 8571 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:08,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8563 Valid, 8571 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:13:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5321 states. [2022-11-20 11:13:10,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5321 to 5321. [2022-11-20 11:13:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5321 states, 3992 states have (on average 1.535571142284569) internal successors, (6130), 3998 states have internal predecessors, (6130), 1276 states have call successors, (1276), 54 states have call predecessors, (1276), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2022-11-20 11:13:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 8677 transitions. [2022-11-20 11:13:10,122 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 8677 transitions. Word has length 12 [2022-11-20 11:13:10,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:10,123 INFO L495 AbstractCegarLoop]: Abstraction has 5321 states and 8677 transitions. [2022-11-20 11:13:10,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:10,123 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 8677 transitions. [2022-11-20 11:13:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:13:10,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:10,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:10,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:13:10,128 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:10,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:10,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1781360755, now seen corresponding path program 1 times [2022-11-20 11:13:10,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:10,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715499234] [2022-11-20 11:13:10,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:10,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:10,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:13:10,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:10,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715499234] [2022-11-20 11:13:10,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715499234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:10,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:10,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:13:10,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931373445] [2022-11-20 11:13:10,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:10,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:13:10,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:10,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:13:10,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:10,835 INFO L87 Difference]: Start difference. First operand 5321 states and 8677 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:12,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:12,006 INFO L93 Difference]: Finished difference Result 15941 states and 26137 transitions. [2022-11-20 11:13:12,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:13:12,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 11:13:12,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:12,338 INFO L225 Difference]: With dead ends: 15941 [2022-11-20 11:13:12,338 INFO L226 Difference]: Without dead ends: 10617 [2022-11-20 11:13:12,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:13:12,418 INFO L413 NwaCegarLoop]: 9946 mSDtfsCounter, 8591 mSDsluCounter, 8593 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8591 SdHoareTripleChecker+Valid, 18539 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:12,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8591 Valid, 18539 Invalid, 12 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:13:12,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10617 states. [2022-11-20 11:13:15,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10617 to 10608. [2022-11-20 11:13:15,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 7961 states have (on average 1.536741615374953) internal successors, (12234), 7972 states have internal predecessors, (12234), 2544 states have call successors, (2544), 105 states have call predecessors, (2544), 102 states have return successors, (2617), 2534 states have call predecessors, (2617), 2537 states have call successors, (2617) [2022-11-20 11:13:15,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 17395 transitions. [2022-11-20 11:13:15,494 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 17395 transitions. Word has length 13 [2022-11-20 11:13:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:15,495 INFO L495 AbstractCegarLoop]: Abstraction has 10608 states and 17395 transitions. [2022-11-20 11:13:15,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 17395 transitions. [2022-11-20 11:13:15,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 11:13:15,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:15,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:15,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:13:15,515 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:15,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:15,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1270069203, now seen corresponding path program 1 times [2022-11-20 11:13:15,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:15,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610844589] [2022-11-20 11:13:15,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:15,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:16,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:13:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:16,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:13:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:16,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:16,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:13:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:16,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:13:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:16,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:13:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:13:16,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:16,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610844589] [2022-11-20 11:13:16,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610844589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:16,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:16,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:13:16,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027616024] [2022-11-20 11:13:16,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:16,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:13:16,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:16,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:13:16,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:13:16,878 INFO L87 Difference]: Start difference. First operand 10608 states and 17395 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 11:13:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:27,379 INFO L93 Difference]: Finished difference Result 21444 states and 35264 transitions. [2022-11-20 11:13:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:13:27,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 68 [2022-11-20 11:13:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:27,488 INFO L225 Difference]: With dead ends: 21444 [2022-11-20 11:13:27,489 INFO L226 Difference]: Without dead ends: 10839 [2022-11-20 11:13:27,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:13:27,629 INFO L413 NwaCegarLoop]: 8359 mSDtfsCounter, 493 mSDsluCounter, 21855 mSDsCounter, 0 mSdLazyCounter, 2596 mSolverCounterSat, 1323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 30214 SdHoareTripleChecker+Invalid, 3919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1323 IncrementalHoareTripleChecker+Valid, 2596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:27,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 30214 Invalid, 3919 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1323 Valid, 2596 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-20 11:13:27,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10839 states. [2022-11-20 11:13:30,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10839 to 10725. [2022-11-20 11:13:30,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10725 states, 8057 states have (on average 1.5361797194985727) internal successors, (12377), 8070 states have internal predecessors, (12377), 2559 states have call successors, (2559), 107 states have call predecessors, (2559), 108 states have return successors, (2642), 2551 states have call predecessors, (2642), 2552 states have call successors, (2642) [2022-11-20 11:13:30,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10725 states to 10725 states and 17578 transitions. [2022-11-20 11:13:30,649 INFO L78 Accepts]: Start accepts. Automaton has 10725 states and 17578 transitions. Word has length 68 [2022-11-20 11:13:30,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:30,649 INFO L495 AbstractCegarLoop]: Abstraction has 10725 states and 17578 transitions. [2022-11-20 11:13:30,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 11:13:30,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10725 states and 17578 transitions. [2022-11-20 11:13:30,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 11:13:30,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:30,660 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:30,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:13:30,660 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:30,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:30,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1739852905, now seen corresponding path program 1 times [2022-11-20 11:13:30,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:30,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685078720] [2022-11-20 11:13:30,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:30,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:42,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:13:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:42,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:13:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:42,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:13:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:43,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:43,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:13:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:13:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:43,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:13:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:13:44,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:44,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685078720] [2022-11-20 11:13:44,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685078720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:44,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:44,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:13:44,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095493861] [2022-11-20 11:13:44,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:44,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:13:44,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:44,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:13:44,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:13:44,015 INFO L87 Difference]: Start difference. First operand 10725 states and 17578 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 11:14:23,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:23,263 INFO L93 Difference]: Finished difference Result 22280 states and 36700 transitions. [2022-11-20 11:14:23,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:14:23,264 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 77 [2022-11-20 11:14:23,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:23,368 INFO L225 Difference]: With dead ends: 22280 [2022-11-20 11:14:23,368 INFO L226 Difference]: Without dead ends: 11558 [2022-11-20 11:14:23,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:14:23,550 INFO L413 NwaCegarLoop]: 8276 mSDtfsCounter, 1804 mSDsluCounter, 39918 mSDsCounter, 0 mSdLazyCounter, 14123 mSolverCounterSat, 2960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 48194 SdHoareTripleChecker+Invalid, 17083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 2960 IncrementalHoareTripleChecker+Valid, 14123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:23,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 48194 Invalid, 17083 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [2960 Valid, 14123 Invalid, 0 Unknown, 0 Unchecked, 36.8s Time] [2022-11-20 11:14:23,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11558 states. [2022-11-20 11:14:25,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11558 to 11173. [2022-11-20 11:14:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11173 states, 8379 states have (on average 1.53359589449815) internal successors, (12850), 8425 states have internal predecessors, (12850), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 143 states have return successors, (2761), 2604 states have call predecessors, (2761), 2643 states have call successors, (2761) [2022-11-20 11:14:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11173 states to 11173 states and 18261 transitions. [2022-11-20 11:14:26,064 INFO L78 Accepts]: Start accepts. Automaton has 11173 states and 18261 transitions. Word has length 77 [2022-11-20 11:14:26,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:26,067 INFO L495 AbstractCegarLoop]: Abstraction has 11173 states and 18261 transitions. [2022-11-20 11:14:26,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 11:14:26,068 INFO L276 IsEmpty]: Start isEmpty. Operand 11173 states and 18261 transitions. [2022-11-20 11:14:26,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 11:14:26,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:26,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:26,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:14:26,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:14:26,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:26,082 INFO L85 PathProgramCache]: Analyzing trace with hash -2129297821, now seen corresponding path program 1 times [2022-11-20 11:14:26,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:26,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053974729] [2022-11-20 11:14:26,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:26,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:27,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:14:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:27,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:14:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:27,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:14:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:27,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:14:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:27,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:14:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:27,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:14:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:28,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:28,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:14:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:28,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:14:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:14:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:28,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:14:28,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:28,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053974729] [2022-11-20 11:14:28,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053974729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:28,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:28,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:14:28,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195258098] [2022-11-20 11:14:28,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:28,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:14:28,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:28,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:14:28,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:14:28,241 INFO L87 Difference]: Start difference. First operand 11173 states and 18261 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-20 11:15:11,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:15:11,938 INFO L93 Difference]: Finished difference Result 28033 states and 48756 transitions. [2022-11-20 11:15:11,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:15:11,939 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 86 [2022-11-20 11:15:11,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:15:12,107 INFO L225 Difference]: With dead ends: 28033 [2022-11-20 11:15:12,108 INFO L226 Difference]: Without dead ends: 17283 [2022-11-20 11:15:12,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:15:12,229 INFO L413 NwaCegarLoop]: 7058 mSDtfsCounter, 6571 mSDsluCounter, 36538 mSDsCounter, 0 mSdLazyCounter, 29160 mSolverCounterSat, 3619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8454 SdHoareTripleChecker+Valid, 43596 SdHoareTripleChecker+Invalid, 32779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 3619 IncrementalHoareTripleChecker+Valid, 29160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:15:12,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8454 Valid, 43596 Invalid, 32779 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [3619 Valid, 29160 Invalid, 0 Unknown, 0 Unchecked, 41.5s Time] [2022-11-20 11:15:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17283 states. [2022-11-20 11:15:18,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17283 to 11183. [2022-11-20 11:15:18,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11183 states, 8387 states have (on average 1.533086920233695) internal successors, (12858), 8433 states have internal predecessors, (12858), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 145 states have return successors, (2801), 2606 states have call predecessors, (2801), 2643 states have call successors, (2801) [2022-11-20 11:15:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11183 states to 11183 states and 18309 transitions. [2022-11-20 11:15:18,735 INFO L78 Accepts]: Start accepts. Automaton has 11183 states and 18309 transitions. Word has length 86 [2022-11-20 11:15:18,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:15:18,738 INFO L495 AbstractCegarLoop]: Abstraction has 11183 states and 18309 transitions. [2022-11-20 11:15:18,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-20 11:15:18,739 INFO L276 IsEmpty]: Start isEmpty. Operand 11183 states and 18309 transitions. [2022-11-20 11:15:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 11:15:18,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:15:18,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:15:18,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:15:18,754 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:15:18,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:18,755 INFO L85 PathProgramCache]: Analyzing trace with hash 61740610, now seen corresponding path program 1 times [2022-11-20 11:15:18,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:15:18,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382583024] [2022-11-20 11:15:18,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:18,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:15:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:22,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:15:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:22,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:15:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:22,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:15:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:22,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:15:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:22,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:15:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:22,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 11:15:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:23,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:15:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:23,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:15:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:15:23,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:15:23,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382583024] [2022-11-20 11:15:23,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382583024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:15:23,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:15:23,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:15:23,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813095255] [2022-11-20 11:15:23,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:15:23,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:15:23,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:15:23,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:15:23,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:15:23,150 INFO L87 Difference]: Start difference. First operand 11183 states and 18309 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 11:15:29,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:15:29,393 INFO L93 Difference]: Finished difference Result 22072 states and 38074 transitions. [2022-11-20 11:15:29,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:15:29,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2022-11-20 11:15:29,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:15:29,516 INFO L225 Difference]: With dead ends: 22072 [2022-11-20 11:15:29,516 INFO L226 Difference]: Without dead ends: 11312 [2022-11-20 11:15:29,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:15:29,868 INFO L413 NwaCegarLoop]: 8360 mSDtfsCounter, 794 mSDsluCounter, 15018 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 2577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 23378 SdHoareTripleChecker+Invalid, 3420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2577 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:15:29,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 23378 Invalid, 3420 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2577 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-20 11:15:29,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11312 states. [2022-11-20 11:15:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11312 to 11187. [2022-11-20 11:15:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11187 states, 8391 states have (on average 1.5328327970444524) internal successors, (12862), 8437 states have internal predecessors, (12862), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 145 states have return successors, (2801), 2606 states have call predecessors, (2801), 2643 states have call successors, (2801) [2022-11-20 11:15:32,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11187 states to 11187 states and 18313 transitions. [2022-11-20 11:15:32,257 INFO L78 Accepts]: Start accepts. Automaton has 11187 states and 18313 transitions. Word has length 92 [2022-11-20 11:15:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:15:32,258 INFO L495 AbstractCegarLoop]: Abstraction has 11187 states and 18313 transitions. [2022-11-20 11:15:32,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 11:15:32,259 INFO L276 IsEmpty]: Start isEmpty. Operand 11187 states and 18313 transitions. [2022-11-20 11:15:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 11:15:32,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:15:32,270 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:15:32,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:15:32,271 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:15:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:32,272 INFO L85 PathProgramCache]: Analyzing trace with hash 2103602855, now seen corresponding path program 1 times [2022-11-20 11:15:32,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:15:32,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362725703] [2022-11-20 11:15:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:32,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:15:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:57,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:15:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:57,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:15:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:57,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:15:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:59,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:59,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 11:15:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:11,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:16:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:11,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:16:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:16:12,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:12,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362725703] [2022-11-20 11:16:12,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362725703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:16:12,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516641891] [2022-11-20 11:16:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:12,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:12,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:16:12,042 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:16:12,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:16:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:15,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 8530 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:16:15,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:16:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:15,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:16:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:16:15,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516641891] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:16:15,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:16:15,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16, 5] total 20 [2022-11-20 11:16:15,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234796538] [2022-11-20 11:16:15,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:15,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:16:15,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:15,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:16:15,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:16:15,634 INFO L87 Difference]: Start difference. First operand 11187 states and 18313 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:16:17,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:17,143 INFO L93 Difference]: Finished difference Result 21955 states and 37855 transitions. [2022-11-20 11:16:17,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:16:17,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2022-11-20 11:16:17,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:17,283 INFO L225 Difference]: With dead ends: 21955 [2022-11-20 11:16:17,284 INFO L226 Difference]: Without dead ends: 11191 [2022-11-20 11:16:17,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:16:17,520 INFO L413 NwaCegarLoop]: 8568 mSDtfsCounter, 38 mSDsluCounter, 8565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 17133 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:17,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 17133 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:16:17,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11191 states. [2022-11-20 11:16:19,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11191 to 11191. [2022-11-20 11:16:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11191 states, 8395 states have (on average 1.5325789160214414) internal successors, (12866), 8441 states have internal predecessors, (12866), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 145 states have return successors, (2801), 2606 states have call predecessors, (2801), 2643 states have call successors, (2801) [2022-11-20 11:16:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11191 states to 11191 states and 18317 transitions. [2022-11-20 11:16:20,156 INFO L78 Accepts]: Start accepts. Automaton has 11191 states and 18317 transitions. Word has length 80 [2022-11-20 11:16:20,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:20,156 INFO L495 AbstractCegarLoop]: Abstraction has 11191 states and 18317 transitions. [2022-11-20 11:16:20,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:16:20,157 INFO L276 IsEmpty]: Start isEmpty. Operand 11191 states and 18317 transitions. [2022-11-20 11:16:20,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 11:16:20,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:20,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:16:20,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:16:20,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:16:20,405 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:20,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1364256211, now seen corresponding path program 1 times [2022-11-20 11:16:20,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:20,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553870070] [2022-11-20 11:16:20,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:20,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:40,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:16:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:40,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:16:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:40,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:16:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:41,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 11:16:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:06,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:17:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:17:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:17:06,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:06,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553870070] [2022-11-20 11:17:06,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553870070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:17:06,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272622419] [2022-11-20 11:17:06,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:06,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:06,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:17:06,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:17:06,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:17:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:09,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 8541 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:17:09,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:17:09,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:17:09,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272622419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:09,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:17:09,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-20 11:17:09,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172780357] [2022-11-20 11:17:09,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:09,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:17:09,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:09,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:17:09,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:17:09,718 INFO L87 Difference]: Start difference. First operand 11191 states and 18317 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:17:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:18,440 INFO L93 Difference]: Finished difference Result 22010 states and 36263 transitions. [2022-11-20 11:17:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:17:18,441 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2022-11-20 11:17:18,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:18,566 INFO L225 Difference]: With dead ends: 22010 [2022-11-20 11:17:18,566 INFO L226 Difference]: Without dead ends: 11242 [2022-11-20 11:17:18,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:17:18,719 INFO L413 NwaCegarLoop]: 8590 mSDtfsCounter, 227 mSDsluCounter, 22727 mSDsCounter, 0 mSdLazyCounter, 3162 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 31317 SdHoareTripleChecker+Invalid, 3167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:18,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 31317 Invalid, 3167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 3162 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-20 11:17:18,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11242 states. [2022-11-20 11:17:20,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11242 to 11199. [2022-11-20 11:17:20,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11199 states, 8403 states have (on average 1.532071879090801) internal successors, (12874), 8449 states have internal predecessors, (12874), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 145 states have return successors, (2801), 2606 states have call predecessors, (2801), 2643 states have call successors, (2801) [2022-11-20 11:17:20,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11199 states to 11199 states and 18325 transitions. [2022-11-20 11:17:20,974 INFO L78 Accepts]: Start accepts. Automaton has 11199 states and 18325 transitions. Word has length 81 [2022-11-20 11:17:20,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:20,975 INFO L495 AbstractCegarLoop]: Abstraction has 11199 states and 18325 transitions. [2022-11-20 11:17:20,975 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:17:20,975 INFO L276 IsEmpty]: Start isEmpty. Operand 11199 states and 18325 transitions. [2022-11-20 11:17:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 11:17:20,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:20,988 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:17:21,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:17:21,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:17:21,213 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:21,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:21,214 INFO L85 PathProgramCache]: Analyzing trace with hash -445608973, now seen corresponding path program 1 times [2022-11-20 11:17:21,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:21,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008831285] [2022-11-20 11:17:21,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:21,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:22,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:17:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:22,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:17:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:22,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:17:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:22,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 11:17:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:22,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:17:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:22,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 11:17:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:22,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:17:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:22,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:17:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:17:22,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:22,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008831285] [2022-11-20 11:17:22,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008831285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:22,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:22,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:17:22,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534854787] [2022-11-20 11:17:22,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:22,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:17:22,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:22,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:17:22,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:17:22,439 INFO L87 Difference]: Start difference. First operand 11199 states and 18325 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:17:51,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:51,531 INFO L93 Difference]: Finished difference Result 15982 states and 26337 transitions. [2022-11-20 11:17:51,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:17:51,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-11-20 11:17:51,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:51,641 INFO L225 Difference]: With dead ends: 15982 [2022-11-20 11:17:51,641 INFO L226 Difference]: Without dead ends: 15979 [2022-11-20 11:17:51,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:17:51,657 INFO L413 NwaCegarLoop]: 6000 mSDtfsCounter, 6034 mSDsluCounter, 11158 mSDsCounter, 0 mSdLazyCounter, 13364 mSolverCounterSat, 3582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7051 SdHoareTripleChecker+Valid, 17158 SdHoareTripleChecker+Invalid, 16946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3582 IncrementalHoareTripleChecker+Valid, 13364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:51,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7051 Valid, 17158 Invalid, 16946 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3582 Valid, 13364 Invalid, 0 Unknown, 0 Unchecked, 27.2s Time] [2022-11-20 11:17:51,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15979 states. [2022-11-20 11:17:54,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15979 to 11199. [2022-11-20 11:17:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11199 states, 8403 states have (on average 1.5318338688563609) internal successors, (12872), 8449 states have internal predecessors, (12872), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 145 states have return successors, (2801), 2606 states have call predecessors, (2801), 2643 states have call successors, (2801) [2022-11-20 11:17:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11199 states to 11199 states and 18323 transitions. [2022-11-20 11:17:54,414 INFO L78 Accepts]: Start accepts. Automaton has 11199 states and 18323 transitions. Word has length 75 [2022-11-20 11:17:54,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:54,415 INFO L495 AbstractCegarLoop]: Abstraction has 11199 states and 18323 transitions. [2022-11-20 11:17:54,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:17:54,415 INFO L276 IsEmpty]: Start isEmpty. Operand 11199 states and 18323 transitions. [2022-11-20 11:17:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 11:17:54,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:54,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:17:54,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:17:54,426 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:54,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:54,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1414019465, now seen corresponding path program 1 times [2022-11-20 11:17:54,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:54,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545612717] [2022-11-20 11:17:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:54,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:13,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:18:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:13,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:18:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:13,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:18:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:14,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:18:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:14,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:18:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:34,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:18:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:34,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:18:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:18:34,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:34,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545612717] [2022-11-20 11:18:34,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545612717] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:34,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415185012] [2022-11-20 11:18:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:34,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:34,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:34,494 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:34,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:18:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:37,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 8554 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:18:37,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:18:37,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:18:37,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415185012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:37,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:18:37,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-20 11:18:37,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309222268] [2022-11-20 11:18:37,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:37,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:18:37,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:37,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:18:37,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:18:37,264 INFO L87 Difference]: Start difference. First operand 11199 states and 18323 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:18:44,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:44,835 INFO L93 Difference]: Finished difference Result 22022 states and 36263 transitions. [2022-11-20 11:18:44,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:18:44,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 83 [2022-11-20 11:18:44,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:44,917 INFO L225 Difference]: With dead ends: 22022 [2022-11-20 11:18:44,917 INFO L226 Difference]: Without dead ends: 11246 [2022-11-20 11:18:45,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:18:45,016 INFO L413 NwaCegarLoop]: 8591 mSDtfsCounter, 223 mSDsluCounter, 22728 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 31319 SdHoareTripleChecker+Invalid, 3165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:18:45,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 31319 Invalid, 3165 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 3160 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-20 11:18:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11246 states. [2022-11-20 11:18:46,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11246 to 11211. [2022-11-20 11:18:46,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11211 states, 8415 states have (on average 1.5310754604872252) internal successors, (12884), 8461 states have internal predecessors, (12884), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 145 states have return successors, (2801), 2606 states have call predecessors, (2801), 2643 states have call successors, (2801) [2022-11-20 11:18:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11211 states to 11211 states and 18335 transitions. [2022-11-20 11:18:46,663 INFO L78 Accepts]: Start accepts. Automaton has 11211 states and 18335 transitions. Word has length 83 [2022-11-20 11:18:46,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:46,664 INFO L495 AbstractCegarLoop]: Abstraction has 11211 states and 18335 transitions. [2022-11-20 11:18:46,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:18:46,664 INFO L276 IsEmpty]: Start isEmpty. Operand 11211 states and 18335 transitions. [2022-11-20 11:18:46,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:18:46,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:46,675 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:46,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 11:18:46,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:46,902 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:18:46,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:46,902 INFO L85 PathProgramCache]: Analyzing trace with hash 187928032, now seen corresponding path program 1 times [2022-11-20 11:18:46,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:46,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722056282] [2022-11-20 11:18:46,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:46,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:51,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:18:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:51,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:18:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:51,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:18:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:51,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:18:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:51,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:18:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:51,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:18:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:51,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 11:18:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:51,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:18:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:51,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:18:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 11:18:51,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:51,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722056282] [2022-11-20 11:18:51,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722056282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:51,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:51,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:18:51,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266702318] [2022-11-20 11:18:51,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:51,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:18:51,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:51,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:18:51,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:18:51,775 INFO L87 Difference]: Start difference. First operand 11211 states and 18335 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-20 11:19:03,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:03,024 INFO L93 Difference]: Finished difference Result 22160 states and 38131 transitions. [2022-11-20 11:19:03,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:19:03,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 94 [2022-11-20 11:19:03,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:03,107 INFO L225 Difference]: With dead ends: 22160 [2022-11-20 11:19:03,108 INFO L226 Difference]: Without dead ends: 11372 [2022-11-20 11:19:03,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:19:03,243 INFO L413 NwaCegarLoop]: 8370 mSDtfsCounter, 805 mSDsluCounter, 39062 mSDsCounter, 0 mSdLazyCounter, 2629 mSolverCounterSat, 2580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 47432 SdHoareTripleChecker+Invalid, 5209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2580 IncrementalHoareTripleChecker+Valid, 2629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:03,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 47432 Invalid, 5209 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2580 Valid, 2629 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-11-20 11:19:03,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11372 states. [2022-11-20 11:19:07,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11372 to 11227. [2022-11-20 11:19:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11227 states, 8428 states have (on average 1.5302562885619364) internal successors, (12897), 8473 states have internal predecessors, (12897), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 148 states have return successors, (4355), 2610 states have call predecessors, (4355), 2643 states have call successors, (4355) [2022-11-20 11:19:07,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11227 states to 11227 states and 19902 transitions. [2022-11-20 11:19:07,165 INFO L78 Accepts]: Start accepts. Automaton has 11227 states and 19902 transitions. Word has length 94 [2022-11-20 11:19:07,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:07,166 INFO L495 AbstractCegarLoop]: Abstraction has 11227 states and 19902 transitions. [2022-11-20 11:19:07,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-20 11:19:07,166 INFO L276 IsEmpty]: Start isEmpty. Operand 11227 states and 19902 transitions. [2022-11-20 11:19:07,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 11:19:07,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:07,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:07,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:19:07,178 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:07,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:07,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1190044929, now seen corresponding path program 1 times [2022-11-20 11:19:07,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:07,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499244115] [2022-11-20 11:19:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:07,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:19:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:23,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:23,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:24,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:19:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:24,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:19:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:19:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:19:46,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:46,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499244115] [2022-11-20 11:19:46,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499244115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:19:46,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289039506] [2022-11-20 11:19:46,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:46,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:19:46,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:19:46,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:19:46,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:19:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:50,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 8558 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:19:50,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:19:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:19:50,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:19:50,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289039506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:50,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:19:50,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-20 11:19:50,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361749291] [2022-11-20 11:19:50,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:50,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:19:50,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:50,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:19:50,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:19:50,252 INFO L87 Difference]: Start difference. First operand 11227 states and 19902 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:19:58,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:58,907 INFO L93 Difference]: Finished difference Result 22070 states and 39425 transitions. [2022-11-20 11:19:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:19:58,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 85 [2022-11-20 11:19:58,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:59,003 INFO L225 Difference]: With dead ends: 22070 [2022-11-20 11:19:59,003 INFO L226 Difference]: Without dead ends: 11266 [2022-11-20 11:19:59,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:19:59,118 INFO L413 NwaCegarLoop]: 8592 mSDtfsCounter, 219 mSDsluCounter, 22729 mSDsCounter, 0 mSdLazyCounter, 3158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 31321 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:59,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 31321 Invalid, 3163 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 3158 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-20 11:19:59,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11266 states. [2022-11-20 11:20:03,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11266 to 11239. [2022-11-20 11:20:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11239 states, 8440 states have (on average 1.5295023696682464) internal successors, (12909), 8485 states have internal predecessors, (12909), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 148 states have return successors, (4355), 2610 states have call predecessors, (4355), 2643 states have call successors, (4355) [2022-11-20 11:20:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11239 states to 11239 states and 19914 transitions. [2022-11-20 11:20:03,593 INFO L78 Accepts]: Start accepts. Automaton has 11239 states and 19914 transitions. Word has length 85 [2022-11-20 11:20:03,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:20:03,593 INFO L495 AbstractCegarLoop]: Abstraction has 11239 states and 19914 transitions. [2022-11-20 11:20:03,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:20:03,594 INFO L276 IsEmpty]: Start isEmpty. Operand 11239 states and 19914 transitions. [2022-11-20 11:20:03,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:20:03,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:20:03,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:03,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:03,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:20:03,819 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:20:03,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:03,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1444958124, now seen corresponding path program 1 times [2022-11-20 11:20:03,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:03,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934149856] [2022-11-20 11:20:03,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:03,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:15,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:20:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:15,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:20:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:16,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:16,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 11:20:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:16,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:20:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:16,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 11:20:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:16,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:16,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:20:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:16,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:20:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:16,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:20:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 11:20:16,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:16,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934149856] [2022-11-20 11:20:16,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934149856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:16,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855703931] [2022-11-20 11:20:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:16,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:16,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:16,792 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:16,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:20:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:19,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 8838 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:20:19,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:20,079 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 11:20:20,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:20:20,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855703931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:20,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:20:20,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2022-11-20 11:20:20,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018911348] [2022-11-20 11:20:20,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:20,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:20,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:20,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:20,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:20:20,082 INFO L87 Difference]: Start difference. First operand 11239 states and 19914 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-20 11:20:24,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:20:24,132 INFO L93 Difference]: Finished difference Result 22083 states and 39499 transitions. [2022-11-20 11:20:24,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:20:24,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 113 [2022-11-20 11:20:24,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:20:24,231 INFO L225 Difference]: With dead ends: 22083 [2022-11-20 11:20:24,232 INFO L226 Difference]: Without dead ends: 11267 [2022-11-20 11:20:24,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:20:24,344 INFO L413 NwaCegarLoop]: 8573 mSDtfsCounter, 11 mSDsluCounter, 33495 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 42068 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:20:24,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 42068 Invalid, 807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 11:20:24,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11267 states. [2022-11-20 11:20:28,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11267 to 11243. [2022-11-20 11:20:28,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11243 states, 8444 states have (on average 1.5292515395547135) internal successors, (12913), 8485 states have internal predecessors, (12913), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 148 states have return successors, (4355), 2614 states have call predecessors, (4355), 2643 states have call successors, (4355) [2022-11-20 11:20:28,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11243 states to 11243 states and 19918 transitions. [2022-11-20 11:20:28,482 INFO L78 Accepts]: Start accepts. Automaton has 11243 states and 19918 transitions. Word has length 113 [2022-11-20 11:20:28,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:20:28,482 INFO L495 AbstractCegarLoop]: Abstraction has 11243 states and 19918 transitions. [2022-11-20 11:20:28,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-20 11:20:28,483 INFO L276 IsEmpty]: Start isEmpty. Operand 11243 states and 19918 transitions. [2022-11-20 11:20:28,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 11:20:28,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:20:28,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:28,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:28,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f31ef1-5434-4137-9b2e-172d026d20bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:20:28,690 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:20:28,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:28,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1229944063, now seen corresponding path program 1 times [2022-11-20 11:20:28,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:28,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619667720] [2022-11-20 11:20:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:28,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:29,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:20:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:29,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:20:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:29,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:20:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:29,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:20:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:29,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:20:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:29,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:20:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:29,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:20:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:29,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:20:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:20:29,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:29,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619667720] [2022-11-20 11:20:29,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619667720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:29,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:29,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:20:29,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744003869] [2022-11-20 11:20:29,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:29,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:20:29,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:29,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:20:29,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:20:29,844 INFO L87 Difference]: Start difference. First operand 11243 states and 19918 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-20 11:20:46,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:20:46,019 INFO L93 Difference]: Finished difference Result 11590 states and 20655 transitions. [2022-11-20 11:20:46,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:20:46,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 88 [2022-11-20 11:20:46,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:20:46,091 INFO L225 Difference]: With dead ends: 11590 [2022-11-20 11:20:46,091 INFO L226 Difference]: Without dead ends: 11583 [2022-11-20 11:20:46,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:20:46,102 INFO L413 NwaCegarLoop]: 8221 mSDtfsCounter, 475 mSDsluCounter, 33541 mSDsCounter, 0 mSdLazyCounter, 6824 mSolverCounterSat, 1312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 41762 SdHoareTripleChecker+Invalid, 8136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1312 IncrementalHoareTripleChecker+Valid, 6824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:20:46,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 41762 Invalid, 8136 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1312 Valid, 6824 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2022-11-20 11:20:46,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11583 states. [2022-11-20 11:20:50,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11583 to 11249. [2022-11-20 11:20:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11249 states, 8449 states have (on average 1.5289383358977393) internal successors, (12918), 8489 states have internal predecessors, (12918), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 149 states have return successors, (4383), 2616 states have call predecessors, (4383), 2643 states have call successors, (4383) [2022-11-20 11:20:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11249 states to 11249 states and 19951 transitions. [2022-11-20 11:20:50,323 INFO L78 Accepts]: Start accepts. Automaton has 11249 states and 19951 transitions. Word has length 88 [2022-11-20 11:20:50,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:20:50,324 INFO L495 AbstractCegarLoop]: Abstraction has 11249 states and 19951 transitions. [2022-11-20 11:20:50,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-20 11:20:50,325 INFO L276 IsEmpty]: Start isEmpty. Operand 11249 states and 19951 transitions. [2022-11-20 11:20:50,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-20 11:20:50,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:20:50,335 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:50,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:20:50,336 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:20:50,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:50,337 INFO L85 PathProgramCache]: Analyzing trace with hash -186063811, now seen corresponding path program 1 times [2022-11-20 11:20:50,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:50,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636111582] [2022-11-20 11:20:50,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:50,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms