./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ --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 b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df --- 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-dbf71c6-m [2022-10-17 10:11:02,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:11:02,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:11:02,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:11:02,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:11:02,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:11:02,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:11:02,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:11:02,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:11:02,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:11:02,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:11:02,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:11:02,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:11:02,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:11:02,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:11:02,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:11:02,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:11:02,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:11:02,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:11:02,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:11:02,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:11:02,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:11:02,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:11:02,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:11:02,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:11:02,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:11:02,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:11:02,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:11:02,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:11:02,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:11:02,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:11:02,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:11:02,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:11:02,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:11:02,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:11:02,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:11:02,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:11:02,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:11:02,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:11:02,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:11:02,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:11:02,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:11:03,043 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:11:03,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:11:03,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:11:03,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:11:03,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:11:03,046 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:11:03,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:11:03,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:11:03,048 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:11:03,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:11:03,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:11:03,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:11:03,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:11:03,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:11:03,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:11:03,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:11:03,051 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:11:03,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:11:03,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:11:03,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:11:03,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:11:03,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:11:03,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:11:03,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:11:03,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:11:03,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:11:03,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:11:03,055 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:11:03,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:11:03,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:11:03,056 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_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df [2022-10-17 10:11:03,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:11:03,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:11:03,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:11:03,377 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:11:03,378 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:11:03,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-10-17 10:11:03,442 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ/data/0d2567e10/c68975e240c34eb99d32e7a693ea1dfb/FLAG5ed09a3de [2022-10-17 10:11:04,346 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:11:04,350 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-10-17 10:11:04,391 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ/data/0d2567e10/c68975e240c34eb99d32e7a693ea1dfb/FLAG5ed09a3de [2022-10-17 10:11:04,846 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ/data/0d2567e10/c68975e240c34eb99d32e7a693ea1dfb [2022-10-17 10:11:04,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:11:04,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:11:04,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:11:04,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:11:04,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:11:04,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:11:04" (1/1) ... [2022-10-17 10:11:04,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf0552a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:04, skipping insertion in model container [2022-10-17 10:11:04,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:11:04" (1/1) ... [2022-10-17 10:11:04,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:11:04,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:11:06,148 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2022-10-17 10:11:06,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:11:06,326 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:11:06,532 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i[139464,139477] [2022-10-17 10:11:06,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:11:06,743 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:11:06,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:06 WrapperNode [2022-10-17 10:11:06,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:11:06,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:11:06,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:11:06,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:11:06,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:06" (1/1) ... [2022-10-17 10:11:06,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:06" (1/1) ... [2022-10-17 10:11:07,016 INFO L138 Inliner]: procedures = 138, calls = 1364, calls flagged for inlining = 60, calls inlined = 52, statements flattened = 3772 [2022-10-17 10:11:07,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:11:07,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:11:07,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:11:07,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:11:07,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:06" (1/1) ... [2022-10-17 10:11:07,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:06" (1/1) ... [2022-10-17 10:11:07,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:06" (1/1) ... [2022-10-17 10:11:07,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:06" (1/1) ... [2022-10-17 10:11:07,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:06" (1/1) ... [2022-10-17 10:11:07,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:06" (1/1) ... [2022-10-17 10:11:07,205 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:06" (1/1) ... [2022-10-17 10:11:07,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:06" (1/1) ... [2022-10-17 10:11:07,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:11:07,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:11:07,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:11:07,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:11:07,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:06" (1/1) ... [2022-10-17 10:11:07,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:11:07,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:07,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:11:07,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffa15420-f4ad-4966-ba7e-f060f359ab8a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:11:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure get_pwm1_auto_point_pwm [2022-10-17 10:11:07,408 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pwm1_auto_point_pwm [2022-10-17 10:11:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:11:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure get_fan [2022-10-17 10:11:07,409 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fan [2022-10-17 10:11:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-10-17 10:11:07,409 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-10-17 10:11:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-10-17 10:11:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-10-17 10:11:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_detect [2022-10-17 10:11:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_detect [2022-10-17 10:11:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:11:07,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:11:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:11:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 10:11:07,411 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 10:11:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:11:07,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:11:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 10:11:07,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 10:11:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:11:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-10-17 10:11:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-10-17 10:11:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-10-17 10:11:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-10-17 10:11:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_auto_point_temp [2022-10-17 10:11:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_auto_point_temp [2022-10-17 10:11:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure set_slope_register [2022-10-17 10:11:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure set_slope_register [2022-10-17 10:11:07,415 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_alarm [2022-10-17 10:11:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_alarm [2022-10-17 10:11:07,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:11:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:11:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:11:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-10-17 10:11:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-10-17 10:11:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-10-17 10:11:07,417 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-10-17 10:11:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:11:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_update_device [2022-10-17 10:11:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_update_device [2022-10-17 10:11:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-10-17 10:11:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-10-17 10:11:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:11:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:11:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp [2022-10-17 10:11:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp [2022-10-17 10:11:07,419 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp [2022-10-17 10:11:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp [2022-10-17 10:11:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan [2022-10-17 10:11:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan [2022-10-17 10:11:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:11:07,420 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-10-17 10:11:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-10-17 10:11:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-10-17 10:11:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-10-17 10:11:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:11:07,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:11:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_auto_point_temp [2022-10-17 10:11:07,424 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_auto_point_temp [2022-10-17 10:11:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-10-17 10:11:07,425 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-10-17 10:11:08,061 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:11:08,064 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:11:12,174 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:11:12,203 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:11:12,203 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:11:12,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:11:12 BoogieIcfgContainer [2022-10-17 10:11:12,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:11:12,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:11:12,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:11:12,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:11:12,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:11:04" (1/3) ... [2022-10-17 10:11:12,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7729ca4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:11:12, skipping insertion in model container [2022-10-17 10:11:12,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:06" (2/3) ... [2022-10-17 10:11:12,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7729ca4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:11:12, skipping insertion in model container [2022-10-17 10:11:12,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:11:12" (3/3) ... [2022-10-17 10:11:12,223 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-10-17 10:11:12,244 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:11:12,245 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:11:12,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:11:12,375 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;@1dfb9286, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:11:12,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:11:12,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 935 states, 738 states have (on average 1.570460704607046) internal successors, (1159), 745 states have internal predecessors, (1159), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2022-10-17 10:11:12,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-17 10:11:12,402 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:12,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:12,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:12,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:12,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2093746445, now seen corresponding path program 1 times [2022-10-17 10:11:12,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:12,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110702101] [2022-10-17 10:11:12,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:12,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:13,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:11:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:11:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:13,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:13,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110702101] [2022-10-17 10:11:13,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110702101] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:13,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:13,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:11:13,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659428685] [2022-10-17 10:11:13,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:13,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:11:13,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:13,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:11:13,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:11:13,424 INFO L87 Difference]: Start difference. First operand has 935 states, 738 states have (on average 1.570460704607046) internal successors, (1159), 745 states have internal predecessors, (1159), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:11:15,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:15,545 INFO L93 Difference]: Finished difference Result 2950 states and 4940 transitions. [2022-10-17 10:11:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:11:15,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-10-17 10:11:15,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:15,614 INFO L225 Difference]: With dead ends: 2950 [2022-10-17 10:11:15,614 INFO L226 Difference]: Without dead ends: 2010 [2022-10-17 10:11:15,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:11:15,640 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 1528 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:15,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 4165 Invalid, 959 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [401 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:11:15,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-10-17 10:11:15,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1833. [2022-10-17 10:11:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1451 states have (on average 1.4624396967608546) internal successors, (2122), 1456 states have internal predecessors, (2122), 333 states have call successors, (333), 49 states have call predecessors, (333), 48 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2022-10-17 10:11:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2782 transitions. [2022-10-17 10:11:15,920 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2782 transitions. Word has length 30 [2022-10-17 10:11:15,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:15,928 INFO L495 AbstractCegarLoop]: Abstraction has 1833 states and 2782 transitions. [2022-10-17 10:11:15,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:11:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2782 transitions. [2022-10-17 10:11:15,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-17 10:11:15,939 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:15,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:15,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:11:15,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:15,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:15,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1170799053, now seen corresponding path program 1 times [2022-10-17 10:11:15,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:15,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008488243] [2022-10-17 10:11:15,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:15,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:16,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-17 10:11:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:16,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:11:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:16,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:16,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008488243] [2022-10-17 10:11:16,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008488243] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:16,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:16,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:11:16,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293501501] [2022-10-17 10:11:16,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:16,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:11:16,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:16,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:11:16,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:11:16,447 INFO L87 Difference]: Start difference. First operand 1833 states and 2782 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:11:18,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:18,362 INFO L93 Difference]: Finished difference Result 5797 states and 8876 transitions. [2022-10-17 10:11:18,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:11:18,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-10-17 10:11:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:18,397 INFO L225 Difference]: With dead ends: 5797 [2022-10-17 10:11:18,397 INFO L226 Difference]: Without dead ends: 3967 [2022-10-17 10:11:18,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:11:18,412 INFO L413 NwaCegarLoop]: 1714 mSDtfsCounter, 1515 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 4170 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:18,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 4170 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-17 10:11:18,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3967 states. [2022-10-17 10:11:18,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3967 to 3628. [2022-10-17 10:11:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 2875 states have (on average 1.4615652173913043) internal successors, (4202), 2880 states have internal predecessors, (4202), 656 states have call successors, (656), 97 states have call predecessors, (656), 96 states have return successors, (650), 650 states have call predecessors, (650), 650 states have call successors, (650) [2022-10-17 10:11:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 5508 transitions. [2022-10-17 10:11:18,646 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 5508 transitions. Word has length 36 [2022-10-17 10:11:18,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:18,647 INFO L495 AbstractCegarLoop]: Abstraction has 3628 states and 5508 transitions. [2022-10-17 10:11:18,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:11:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 5508 transitions. [2022-10-17 10:11:18,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 10:11:18,650 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:18,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:18,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:11:18,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:18,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:18,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2057944644, now seen corresponding path program 1 times [2022-10-17 10:11:18,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:18,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421867006] [2022-10-17 10:11:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:18,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:18,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:11:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:11:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:18,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:18,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421867006] [2022-10-17 10:11:18,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421867006] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:19,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:19,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:11:19,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576399787] [2022-10-17 10:11:19,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:19,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:11:19,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:19,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:11:19,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:11:19,005 INFO L87 Difference]: Start difference. First operand 3628 states and 5508 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:11:21,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:21,051 INFO L93 Difference]: Finished difference Result 11502 states and 17614 transitions. [2022-10-17 10:11:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:11:21,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-10-17 10:11:21,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:21,123 INFO L225 Difference]: With dead ends: 11502 [2022-10-17 10:11:21,123 INFO L226 Difference]: Without dead ends: 7877 [2022-10-17 10:11:21,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:11:21,155 INFO L413 NwaCegarLoop]: 1730 mSDtfsCounter, 1523 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 4204 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:21,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4204 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-17 10:11:21,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7877 states. [2022-10-17 10:11:21,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7877 to 7214. [2022-10-17 10:11:21,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7214 states, 5719 states have (on average 1.4607448854694878) internal successors, (8354), 5724 states have internal predecessors, (8354), 1302 states have call successors, (1302), 193 states have call predecessors, (1302), 192 states have return successors, (1296), 1296 states have call predecessors, (1296), 1296 states have call successors, (1296) [2022-10-17 10:11:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7214 states to 7214 states and 10952 transitions. [2022-10-17 10:11:21,632 INFO L78 Accepts]: Start accepts. Automaton has 7214 states and 10952 transitions. Word has length 34 [2022-10-17 10:11:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:21,632 INFO L495 AbstractCegarLoop]: Abstraction has 7214 states and 10952 transitions. [2022-10-17 10:11:21,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:11:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 7214 states and 10952 transitions. [2022-10-17 10:11:21,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-17 10:11:21,637 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:21,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:21,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:11:21,638 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:21,639 INFO L85 PathProgramCache]: Analyzing trace with hash -880553717, now seen corresponding path program 1 times [2022-10-17 10:11:21,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:21,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885537074] [2022-10-17 10:11:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:21,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:21,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-17 10:11:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:11:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:21,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:21,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885537074] [2022-10-17 10:11:21,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885537074] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:21,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:21,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:11:21,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730900856] [2022-10-17 10:11:21,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:21,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:11:21,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:21,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:11:21,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:11:21,977 INFO L87 Difference]: Start difference. First operand 7214 states and 10952 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:11:24,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:24,411 INFO L93 Difference]: Finished difference Result 22852 states and 34986 transitions. [2022-10-17 10:11:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:11:24,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-10-17 10:11:24,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:24,549 INFO L225 Difference]: With dead ends: 22852 [2022-10-17 10:11:24,550 INFO L226 Difference]: Without dead ends: 15641 [2022-10-17 10:11:24,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:11:24,595 INFO L413 NwaCegarLoop]: 1740 mSDtfsCounter, 1514 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 4219 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:24,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 4219 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:11:24,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15641 states. [2022-10-17 10:11:25,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15641 to 14330. [2022-10-17 10:11:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14330 states, 11363 states have (on average 1.4592977206723576) internal successors, (16582), 11368 states have internal predecessors, (16582), 2582 states have call successors, (2582), 385 states have call predecessors, (2582), 384 states have return successors, (2576), 2576 states have call predecessors, (2576), 2576 states have call successors, (2576) [2022-10-17 10:11:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14330 states to 14330 states and 21740 transitions. [2022-10-17 10:11:25,501 INFO L78 Accepts]: Start accepts. Automaton has 14330 states and 21740 transitions. Word has length 36 [2022-10-17 10:11:25,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:25,502 INFO L495 AbstractCegarLoop]: Abstraction has 14330 states and 21740 transitions. [2022-10-17 10:11:25,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:11:25,503 INFO L276 IsEmpty]: Start isEmpty. Operand 14330 states and 21740 transitions. [2022-10-17 10:11:25,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-17 10:11:25,505 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:25,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:25,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:11:25,506 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:25,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:25,506 INFO L85 PathProgramCache]: Analyzing trace with hash 978092325, now seen corresponding path program 1 times [2022-10-17 10:11:25,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:25,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036839563] [2022-10-17 10:11:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:25,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:25,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:11:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:25,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:11:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:25,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:25,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036839563] [2022-10-17 10:11:25,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036839563] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:25,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:25,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:11:25,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897231980] [2022-10-17 10:11:25,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:25,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:11:25,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:11:25,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:11:25,815 INFO L87 Difference]: Start difference. First operand 14330 states and 21740 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:11:28,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:28,742 INFO L93 Difference]: Finished difference Result 45448 states and 69534 transitions. [2022-10-17 10:11:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:11:28,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-10-17 10:11:28,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:28,914 INFO L225 Difference]: With dead ends: 45448 [2022-10-17 10:11:28,914 INFO L226 Difference]: Without dead ends: 31121 [2022-10-17 10:11:28,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:11:28,974 INFO L413 NwaCegarLoop]: 1838 mSDtfsCounter, 1523 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 4410 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:28,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4410 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-17 10:11:29,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31121 states. [2022-10-17 10:11:30,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31121 to 28514. [2022-10-17 10:11:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28514 states, 22603 states have (on average 1.4581250276511968) internal successors, (32958), 22608 states have internal predecessors, (32958), 5142 states have call successors, (5142), 769 states have call predecessors, (5142), 768 states have return successors, (5136), 5136 states have call predecessors, (5136), 5136 states have call successors, (5136) [2022-10-17 10:11:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28514 states to 28514 states and 43236 transitions. [2022-10-17 10:11:30,912 INFO L78 Accepts]: Start accepts. Automaton has 28514 states and 43236 transitions. Word has length 29 [2022-10-17 10:11:30,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:30,913 INFO L495 AbstractCegarLoop]: Abstraction has 28514 states and 43236 transitions. [2022-10-17 10:11:30,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:11:30,913 INFO L276 IsEmpty]: Start isEmpty. Operand 28514 states and 43236 transitions. [2022-10-17 10:11:30,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-17 10:11:30,915 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:30,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:11:30,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:11:30,915 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:30,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:30,916 INFO L85 PathProgramCache]: Analyzing trace with hash -758457314, now seen corresponding path program 1 times [2022-10-17 10:11:30,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:30,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773144561] [2022-10-17 10:11:30,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:30,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:31,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:11:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:31,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:11:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:11:31,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:31,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773144561] [2022-10-17 10:11:31,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773144561] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:31,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:31,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:11:31,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046664402] [2022-10-17 10:11:31,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:31,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:11:31,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:31,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:11:31,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:11:31,229 INFO L87 Difference]: Start difference. First operand 28514 states and 43236 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)