./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8 --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 204d10239a0b36d2351863a85d337d8394fa6f65e7ffe92c9fae442e87993f63 --- 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-e04fb08 [2022-11-16 11:46:21,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:46:21,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:46:21,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:46:21,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:46:21,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:46:21,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:46:21,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:46:21,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:46:21,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:46:21,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:46:21,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:46:21,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:46:21,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:46:21,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:46:21,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:46:21,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:46:21,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:46:21,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:46:21,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:46:21,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:46:21,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:46:21,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:46:21,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:46:21,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:46:21,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:46:21,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:46:21,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:46:21,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:46:21,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:46:21,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:46:21,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:46:21,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:46:21,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:46:21,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:46:21,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:46:21,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:46:21,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:46:21,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:46:21,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:46:21,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:46:21,973 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:46:22,017 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:46:22,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:46:22,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:46:22,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:46:22,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:46:22,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:46:22,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:46:22,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:46:22,021 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:46:22,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:46:22,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:46:22,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:46:22,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:46:22,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:46:22,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:46:22,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:46:22,023 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:46:22,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:46:22,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:46:22,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:46:22,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:46:22,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:46:22,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:46:22,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:46:22,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:46:22,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:46:22,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:46:22,027 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:46:22,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:46:22,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:46:22,028 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_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 204d10239a0b36d2351863a85d337d8394fa6f65e7ffe92c9fae442e87993f63 [2022-11-16 11:46:22,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:46:22,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:46:22,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:46:22,329 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:46:22,329 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:46:22,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c [2022-11-16 11:46:22,389 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/data/e0d2f2c79/2fb1623c81e54867afb175dae871b899/FLAGb8835abbb [2022-11-16 11:46:23,007 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:46:23,008 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c [2022-11-16 11:46:23,040 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/data/e0d2f2c79/2fb1623c81e54867afb175dae871b899/FLAGb8835abbb [2022-11-16 11:46:23,209 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/data/e0d2f2c79/2fb1623c81e54867afb175dae871b899 [2022-11-16 11:46:23,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:46:23,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:46:23,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:46:23,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:46:23,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:46:23,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:46:23" (1/1) ... [2022-11-16 11:46:23,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7029d896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:23, skipping insertion in model container [2022-11-16 11:46:23,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:46:23" (1/1) ... [2022-11-16 11:46:23,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:46:23,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:46:23,546 WARN L229 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_2958883e-fece-434e-9ff8-cebbfe1d8a5e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c[1107,1120] [2022-11-16 11:46:23,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:46:23,985 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:46:24,006 WARN L229 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_2958883e-fece-434e-9ff8-cebbfe1d8a5e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c[1107,1120] [2022-11-16 11:46:24,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:46:24,180 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:46:24,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:24 WrapperNode [2022-11-16 11:46:24,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:46:24,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:46:24,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:46:24,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:46:24,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:24" (1/1) ... [2022-11-16 11:46:24,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:24" (1/1) ... [2022-11-16 11:46:24,402 INFO L138 Inliner]: procedures = 11, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3621 [2022-11-16 11:46:24,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:46:24,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:46:24,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:46:24,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:46:24,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:24" (1/1) ... [2022-11-16 11:46:24,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:24" (1/1) ... [2022-11-16 11:46:24,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:24" (1/1) ... [2022-11-16 11:46:24,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:24" (1/1) ... [2022-11-16 11:46:24,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:24" (1/1) ... [2022-11-16 11:46:24,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:24" (1/1) ... [2022-11-16 11:46:24,533 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:24" (1/1) ... [2022-11-16 11:46:24,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:24" (1/1) ... [2022-11-16 11:46:24,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:46:24,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:46:24,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:46:24,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:46:24,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:24" (1/1) ... [2022-11-16 11:46:24,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:46:24,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:24,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:46:24,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:46:24,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:46:24,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:46:24,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:46:24,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:46:25,249 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:46:25,251 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:46:28,563 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:46:28,583 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:46:28,583 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:46:28,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:46:28 BoogieIcfgContainer [2022-11-16 11:46:28,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:46:28,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:46:28,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:46:28,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:46:28,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:46:23" (1/3) ... [2022-11-16 11:46:28,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e14a487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:46:28, skipping insertion in model container [2022-11-16 11:46:28,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:24" (2/3) ... [2022-11-16 11:46:28,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e14a487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:46:28, skipping insertion in model container [2022-11-16 11:46:28,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:46:28" (3/3) ... [2022-11-16 11:46:28,604 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Vsa16.c [2022-11-16 11:46:28,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:46:28,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:46:28,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:46:28,737 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;@37a42519, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:46:28,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:46:28,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 531 states, 524 states have (on average 1.6564885496183206) internal successors, (868), 525 states have internal predecessors, (868), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:46:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:46:28,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:28,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:28,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:28,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1490619993, now seen corresponding path program 1 times [2022-11-16 11:46:28,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:28,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734139670] [2022-11-16 11:46:28,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:28,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:46:29,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:29,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734139670] [2022-11-16 11:46:29,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734139670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:29,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:29,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:46:29,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577591701] [2022-11-16 11:46:29,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:29,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:46:29,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:29,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:46:29,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:46:29,511 INFO L87 Difference]: Start difference. First operand has 531 states, 524 states have (on average 1.6564885496183206) internal successors, (868), 525 states have internal predecessors, (868), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2022-11-16 11:46:29,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:29,782 INFO L93 Difference]: Finished difference Result 1581 states and 2626 transitions. [2022-11-16 11:46:29,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:46:29,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 [2022-11-16 11:46:29,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:29,810 INFO L225 Difference]: With dead ends: 1581 [2022-11-16 11:46:29,811 INFO L226 Difference]: Without dead ends: 1052 [2022-11-16 11:46:29,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:46:29,824 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 1710 mSDsluCounter, 3524 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 4426 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:29,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 4426 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:46:29,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-11-16 11:46:29,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 533. [2022-11-16 11:46:29,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 525 states have (on average 1.6495238095238096) internal successors, (866), 526 states have internal predecessors, (866), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 11:46:29,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 876 transitions. [2022-11-16 11:46:29,912 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 876 transitions. Word has length 13 [2022-11-16 11:46:29,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:29,913 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 876 transitions. [2022-11-16 11:46:29,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2022-11-16 11:46:29,914 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 876 transitions. [2022-11-16 11:46:29,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 11:46:29,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:29,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:29,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:46:29,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:29,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:29,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1251197559, now seen corresponding path program 1 times [2022-11-16 11:46:29,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:29,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587053984] [2022-11-16 11:46:29,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:29,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:46:29,995 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:46:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:46:30,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:46:30,185 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:46:30,187 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 11:46:30,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:46:30,194 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:46:30,198 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:46:30,271 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-16 11:46:30,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:46:30 BoogieIcfgContainer [2022-11-16 11:46:30,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:46:30,293 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:46:30,293 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:46:30,294 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:46:30,294 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:46:28" (3/4) ... [2022-11-16 11:46:30,301 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 11:46:30,301 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:46:30,302 INFO L158 Benchmark]: Toolchain (without parser) took 7088.46ms. Allocated memory was 109.1MB in the beginning and 459.3MB in the end (delta: 350.2MB). Free memory was 64.1MB in the beginning and 361.9MB in the end (delta: -297.8MB). Peak memory consumption was 52.2MB. Max. memory is 16.1GB. [2022-11-16 11:46:30,302 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:46:30,303 INFO L158 Benchmark]: CACSL2BoogieTranslator took 962.22ms. Allocated memory was 109.1MB in the beginning and 144.7MB in the end (delta: 35.7MB). Free memory was 63.8MB in the beginning and 80.1MB in the end (delta: -16.3MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2022-11-16 11:46:30,303 INFO L158 Benchmark]: Boogie Procedure Inliner took 239.00ms. Allocated memory is still 144.7MB. Free memory was 80.1MB in the beginning and 90.4MB in the end (delta: -10.3MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB. [2022-11-16 11:46:30,304 INFO L158 Benchmark]: Boogie Preprocessor took 169.04ms. Allocated memory is still 144.7MB. Free memory was 90.4MB in the beginning and 75.8MB in the end (delta: 14.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-16 11:46:30,305 INFO L158 Benchmark]: RCFGBuilder took 3995.29ms. Allocated memory was 144.7MB in the beginning and 257.9MB in the end (delta: 113.2MB). Free memory was 75.8MB in the beginning and 186.4MB in the end (delta: -110.6MB). Peak memory consumption was 115.8MB. Max. memory is 16.1GB. [2022-11-16 11:46:30,305 INFO L158 Benchmark]: TraceAbstraction took 1703.22ms. Allocated memory was 257.9MB in the beginning and 459.3MB in the end (delta: 201.3MB). Free memory was 186.4MB in the beginning and 361.9MB in the end (delta: -175.5MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2022-11-16 11:46:30,306 INFO L158 Benchmark]: Witness Printer took 7.88ms. Allocated memory is still 459.3MB. Free memory is still 361.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:46:30,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 962.22ms. Allocated memory was 109.1MB in the beginning and 144.7MB in the end (delta: 35.7MB). Free memory was 63.8MB in the beginning and 80.1MB in the end (delta: -16.3MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 239.00ms. Allocated memory is still 144.7MB. Free memory was 80.1MB in the beginning and 90.4MB in the end (delta: -10.3MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 169.04ms. Allocated memory is still 144.7MB. Free memory was 90.4MB in the beginning and 75.8MB in the end (delta: 14.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 3995.29ms. Allocated memory was 144.7MB in the beginning and 257.9MB in the end (delta: 113.2MB). Free memory was 75.8MB in the beginning and 186.4MB in the end (delta: -110.6MB). Peak memory consumption was 115.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1703.22ms. Allocated memory was 257.9MB in the beginning and 459.3MB in the end (delta: 201.3MB). Free memory was 186.4MB in the beginning and 361.9MB in the end (delta: -175.5MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * Witness Printer took 7.88ms. Allocated memory is still 459.3MB. Free memory is still 361.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 340, overapproximation of bitwiseAnd at line 338. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 16); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L31] const SORT_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 12); [L32] const SORT_6 msb_SORT_6 = (SORT_6)1 << (12 - 1); [L34] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 32); [L35] const SORT_11 msb_SORT_11 = (SORT_11)1 << (32 - 1); [L37] const SORT_37 mask_SORT_37 = (SORT_37)-1 >> (sizeof(SORT_37) * 8 - 3); [L38] const SORT_37 msb_SORT_37 = (SORT_37)1 << (3 - 1); [L40] const SORT_44 mask_SORT_44 = (SORT_44)-1 >> (sizeof(SORT_44) * 8 - 2); [L41] const SORT_44 msb_SORT_44 = (SORT_44)1 << (2 - 1); [L43] const SORT_295 mask_SORT_295 = (SORT_295)-1 >> (sizeof(SORT_295) * 8 - 4); [L44] const SORT_295 msb_SORT_295 = (SORT_295)1 << (4 - 1); [L46] const SORT_297 mask_SORT_297 = (SORT_297)-1 >> (sizeof(SORT_297) * 8 - 5); [L47] const SORT_297 msb_SORT_297 = (SORT_297)1 << (5 - 1); [L49] const SORT_299 mask_SORT_299 = (SORT_299)-1 >> (sizeof(SORT_299) * 8 - 6); [L50] const SORT_299 msb_SORT_299 = (SORT_299)1 << (6 - 1); [L52] const SORT_301 mask_SORT_301 = (SORT_301)-1 >> (sizeof(SORT_301) * 8 - 7); [L53] const SORT_301 msb_SORT_301 = (SORT_301)1 << (7 - 1); [L55] const SORT_303 mask_SORT_303 = (SORT_303)-1 >> (sizeof(SORT_303) * 8 - 8); [L56] const SORT_303 msb_SORT_303 = (SORT_303)1 << (8 - 1); [L58] const SORT_305 mask_SORT_305 = (SORT_305)-1 >> (sizeof(SORT_305) * 8 - 9); [L59] const SORT_305 msb_SORT_305 = (SORT_305)1 << (9 - 1); [L61] const SORT_307 mask_SORT_307 = (SORT_307)-1 >> (sizeof(SORT_307) * 8 - 10); [L62] const SORT_307 msb_SORT_307 = (SORT_307)1 << (10 - 1); [L64] const SORT_309 mask_SORT_309 = (SORT_309)-1 >> (sizeof(SORT_309) * 8 - 11); [L65] const SORT_309 msb_SORT_309 = (SORT_309)1 << (11 - 1); [L67] const SORT_312 mask_SORT_312 = (SORT_312)-1 >> (sizeof(SORT_312) * 8 - 13); [L68] const SORT_312 msb_SORT_312 = (SORT_312)1 << (13 - 1); [L70] const SORT_314 mask_SORT_314 = (SORT_314)-1 >> (sizeof(SORT_314) * 8 - 14); [L71] const SORT_314 msb_SORT_314 = (SORT_314)1 << (14 - 1); [L73] const SORT_316 mask_SORT_316 = (SORT_316)-1 >> (sizeof(SORT_316) * 8 - 15); [L74] const SORT_316 msb_SORT_316 = (SORT_316)1 << (15 - 1); [L76] const SORT_533 mask_SORT_533 = (SORT_533)-1 >> (sizeof(SORT_533) * 8 - 17); [L77] const SORT_533 msb_SORT_533 = (SORT_533)1 << (17 - 1); [L79] const SORT_6 var_7 = 0; [L80] const SORT_11 var_13 = 0; [L81] const SORT_3 var_21 = 0; [L82] const SORT_1 var_26 = 0; [L83] const SORT_37 var_38 = 0; [L84] const SORT_1 var_57 = 1; [L85] const SORT_37 var_93 = 2; [L86] const SORT_37 var_97 = 1; [L87] const SORT_37 var_105 = 4; [L88] const SORT_37 var_107 = 5; [L89] const SORT_37 var_111 = 3; [L90] const SORT_6 var_128 = 2; [L91] const SORT_44 var_138 = 0; [L92] const SORT_3 var_145 = 65535; [L93] const SORT_297 var_534 = 0; [L94] const SORT_301 var_626 = 5; [L95] const SORT_301 var_630 = 4; [L96] const SORT_301 var_634 = 3; [L97] const SORT_301 var_638 = 2; [L98] const SORT_301 var_642 = 1; [L99] const SORT_301 var_646 = 0; [L101] SORT_1 input_2; [L102] SORT_3 input_4; [L103] SORT_3 input_5; [L104] SORT_6 input_114; [L105] SORT_6 input_115; [L106] SORT_6 input_116; [L107] SORT_3 input_134; [L108] SORT_3 input_135; [L109] SORT_3 input_136; [L110] SORT_3 input_144; [L111] SORT_3 input_153; [L112] SORT_3 input_154; [L113] SORT_3 input_155; [L114] SORT_3 input_158; [L115] SORT_3 input_176; [L116] SORT_3 input_177; [L117] SORT_3 input_178; [L118] SORT_3 input_181; [L119] SORT_3 input_183; [L120] SORT_44 input_197; [L121] SORT_44 input_198; [L122] SORT_44 input_199; [L123] SORT_3 input_529; [L124] SORT_3 input_530; [L125] SORT_3 input_531; [L126] SORT_3 input_532; [L127] SORT_3 input_555; [L128] SORT_3 input_557; [L129] SORT_3 input_559; [L130] SORT_3 input_563; [L131] SORT_3 input_564; [L132] SORT_3 input_565; [L133] SORT_3 input_566; [L134] SORT_3 input_585; [L135] SORT_3 input_589; [L136] SORT_3 input_591; [L137] SORT_3 input_598; [L138] SORT_3 input_600; [L139] SORT_3 input_605; [L140] SORT_3 input_607; [L141] SORT_3 input_611; [L142] SORT_3 input_612; [L143] SORT_3 input_613; [L144] SORT_3 input_614; [L145] SORT_3 input_615; [L146] SORT_3 input_616; [L147] SORT_3 input_617; [L148] SORT_3 input_618; [L149] SORT_3 input_619; [L150] SORT_3 input_620; [L151] SORT_3 input_621; [L152] SORT_3 input_622; [L153] SORT_3 input_629; [L154] SORT_3 input_633; [L155] SORT_3 input_637; [L156] SORT_3 input_641; [L157] SORT_3 input_645; [L158] SORT_3 input_650; [L159] SORT_3 input_656; [L160] SORT_3 input_658; [L161] SORT_3 input_660; [L162] SORT_3 input_662; [L163] SORT_3 input_665; [L164] SORT_3 input_671; [L165] SORT_3 input_673; [L166] SORT_3 input_675; [L167] SORT_3 input_678; [L168] SORT_3 input_684; [L169] SORT_3 input_686; [L170] SORT_3 input_689; [L171] SORT_3 input_695; [L172] SORT_3 input_698; [L173] SORT_3 input_705; [L174] SORT_3 input_710; [L175] SORT_1 input_729; [L176] SORT_1 input_730; [L177] SORT_1 input_731; [L178] SORT_1 input_732; [L179] SORT_1 input_735; [L180] SORT_1 input_737; [L181] SORT_1 input_739; [L182] SORT_1 input_744; [L183] SORT_1 input_746; [L184] SORT_1 input_751; [L185] SORT_3 input_764; [L186] SORT_3 input_765; [L187] SORT_3 input_766; [L189] SORT_6 state_8 = __VERIFIER_nondet_ushort() & mask_SORT_6; [L190] SORT_6 state_15 = __VERIFIER_nondet_ushort() & mask_SORT_6; [L191] SORT_3 state_22 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L192] SORT_3 state_24 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L193] SORT_3 state_28 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L194] SORT_3 state_30 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L195] SORT_37 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_37; [L196] SORT_3 state_80 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L197] SORT_3 state_82 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L198] SORT_3 state_84 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L199] SORT_1 state_86 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L200] SORT_3 state_88 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L201] SORT_3 state_90 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L203] SORT_6 init_9_arg_1 = var_7; [L204] state_8 = init_9_arg_1 [L205] SORT_6 init_16_arg_1 = var_7; [L206] state_15 = init_16_arg_1 [L207] SORT_3 init_23_arg_1 = var_21; [L208] state_22 = init_23_arg_1 [L209] SORT_3 init_25_arg_1 = var_21; [L210] state_24 = init_25_arg_1 [L211] SORT_3 init_29_arg_1 = var_21; [L212] state_28 = init_29_arg_1 [L213] SORT_3 init_31_arg_1 = var_21; [L214] state_30 = init_31_arg_1 [L215] SORT_37 init_40_arg_1 = var_38; [L216] state_39 = init_40_arg_1 [L217] SORT_3 init_81_arg_1 = var_21; [L218] state_80 = init_81_arg_1 [L219] SORT_3 init_83_arg_1 = var_21; [L220] state_82 = init_83_arg_1 [L221] SORT_3 init_85_arg_1 = var_21; [L222] state_84 = init_85_arg_1 [L223] SORT_1 init_87_arg_1 = var_26; [L224] state_86 = init_87_arg_1 [L225] SORT_3 init_89_arg_1 = var_21; [L226] state_88 = init_89_arg_1 [L227] SORT_3 init_91_arg_1 = var_21; [L228] state_90 = init_91_arg_1 VAL [init_16_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_40_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_89_arg_1=0, init_91_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_11=4294967295, mask_SORT_295=15, mask_SORT_297=31, mask_SORT_299=63, mask_SORT_3=65535, mask_SORT_301=127, mask_SORT_303=255, mask_SORT_305=511, mask_SORT_307=1023, mask_SORT_309=2047, mask_SORT_312=8191, mask_SORT_314=16383, mask_SORT_316=32767, mask_SORT_37=7, mask_SORT_44=3, mask_SORT_533=4294967295, mask_SORT_6=4095, msb_SORT_1=1, msb_SORT_11=2147483648, msb_SORT_295=8, msb_SORT_297=16, msb_SORT_299=32, msb_SORT_3=32768, msb_SORT_301=64, msb_SORT_303=128, msb_SORT_305=256, msb_SORT_307=512, msb_SORT_309=1024, msb_SORT_312=4096, msb_SORT_314=8192, msb_SORT_316=16384, msb_SORT_37=4, msb_SORT_44=2, msb_SORT_533=65536, msb_SORT_6=2048, state_15=0, state_22=0, state_24=0, state_28=0, state_30=0, state_39=0, state_8=0, state_80=0, state_82=0, state_84=0, state_86=0, state_88=0, state_90=0, var_105=4, var_107=5, var_111=3, var_128=2, var_13=0, var_138=0, var_145=65535, var_21=0, var_26=0, var_38=0, var_534=0, var_57=1, var_626=5, var_630=4, var_634=3, var_638=2, var_642=1, var_646=0, var_7=0, var_93=2, var_97=1] [L231] input_2 = __VERIFIER_nondet_uchar() [L232] input_4 = __VERIFIER_nondet_ushort() [L233] input_5 = __VERIFIER_nondet_ushort() [L234] input_114 = __VERIFIER_nondet_ushort() [L235] input_115 = __VERIFIER_nondet_ushort() [L236] input_116 = __VERIFIER_nondet_ushort() [L237] input_134 = __VERIFIER_nondet_ushort() [L238] input_135 = __VERIFIER_nondet_ushort() [L239] input_136 = __VERIFIER_nondet_ushort() [L240] input_144 = __VERIFIER_nondet_ushort() [L241] input_153 = __VERIFIER_nondet_ushort() [L242] input_154 = __VERIFIER_nondet_ushort() [L243] input_155 = __VERIFIER_nondet_ushort() [L244] input_158 = __VERIFIER_nondet_ushort() [L245] input_176 = __VERIFIER_nondet_ushort() [L246] input_177 = __VERIFIER_nondet_ushort() [L247] input_178 = __VERIFIER_nondet_ushort() [L248] input_181 = __VERIFIER_nondet_ushort() [L249] input_183 = __VERIFIER_nondet_ushort() [L250] input_197 = __VERIFIER_nondet_uchar() [L251] input_198 = __VERIFIER_nondet_uchar() [L252] input_199 = __VERIFIER_nondet_uchar() [L253] input_529 = __VERIFIER_nondet_ushort() [L254] input_530 = __VERIFIER_nondet_ushort() [L255] input_531 = __VERIFIER_nondet_ushort() [L256] input_532 = __VERIFIER_nondet_ushort() [L257] input_555 = __VERIFIER_nondet_ushort() [L258] input_557 = __VERIFIER_nondet_ushort() [L259] input_559 = __VERIFIER_nondet_ushort() [L260] input_563 = __VERIFIER_nondet_ushort() [L261] input_564 = __VERIFIER_nondet_ushort() [L262] input_565 = __VERIFIER_nondet_ushort() [L263] input_566 = __VERIFIER_nondet_ushort() [L264] input_585 = __VERIFIER_nondet_ushort() [L265] input_589 = __VERIFIER_nondet_ushort() [L266] input_591 = __VERIFIER_nondet_ushort() [L267] input_598 = __VERIFIER_nondet_ushort() [L268] input_600 = __VERIFIER_nondet_ushort() [L269] input_605 = __VERIFIER_nondet_ushort() [L270] input_607 = __VERIFIER_nondet_ushort() [L271] input_611 = __VERIFIER_nondet_ushort() [L272] input_612 = __VERIFIER_nondet_ushort() [L273] input_613 = __VERIFIER_nondet_ushort() [L274] input_614 = __VERIFIER_nondet_ushort() [L275] input_615 = __VERIFIER_nondet_ushort() [L276] input_616 = __VERIFIER_nondet_ushort() [L277] input_617 = __VERIFIER_nondet_ushort() [L278] input_618 = __VERIFIER_nondet_ushort() [L279] input_619 = __VERIFIER_nondet_ushort() [L280] input_620 = __VERIFIER_nondet_ushort() [L281] input_621 = __VERIFIER_nondet_ushort() [L282] input_622 = __VERIFIER_nondet_ushort() [L283] input_629 = __VERIFIER_nondet_ushort() [L284] input_633 = __VERIFIER_nondet_ushort() [L285] input_637 = __VERIFIER_nondet_ushort() [L286] input_641 = __VERIFIER_nondet_ushort() [L287] input_645 = __VERIFIER_nondet_ushort() [L288] input_650 = __VERIFIER_nondet_ushort() [L289] input_656 = __VERIFIER_nondet_ushort() [L290] input_658 = __VERIFIER_nondet_ushort() [L291] input_660 = __VERIFIER_nondet_ushort() [L292] input_662 = __VERIFIER_nondet_ushort() [L293] input_665 = __VERIFIER_nondet_ushort() [L294] input_671 = __VERIFIER_nondet_ushort() [L295] input_673 = __VERIFIER_nondet_ushort() [L296] input_675 = __VERIFIER_nondet_ushort() [L297] input_678 = __VERIFIER_nondet_ushort() [L298] input_684 = __VERIFIER_nondet_ushort() [L299] input_686 = __VERIFIER_nondet_ushort() [L300] input_689 = __VERIFIER_nondet_ushort() [L301] input_695 = __VERIFIER_nondet_ushort() [L302] input_698 = __VERIFIER_nondet_ushort() [L303] input_705 = __VERIFIER_nondet_ushort() [L304] input_710 = __VERIFIER_nondet_ushort() [L305] input_729 = __VERIFIER_nondet_uchar() [L306] input_730 = __VERIFIER_nondet_uchar() [L307] input_731 = __VERIFIER_nondet_uchar() [L308] input_732 = __VERIFIER_nondet_uchar() [L309] input_735 = __VERIFIER_nondet_uchar() [L310] input_737 = __VERIFIER_nondet_uchar() [L311] input_739 = __VERIFIER_nondet_uchar() [L312] input_744 = __VERIFIER_nondet_uchar() [L313] input_746 = __VERIFIER_nondet_uchar() [L314] input_751 = __VERIFIER_nondet_uchar() [L315] input_764 = __VERIFIER_nondet_ushort() [L316] input_765 = __VERIFIER_nondet_ushort() [L317] input_766 = __VERIFIER_nondet_ushort() [L320] SORT_6 var_10_arg_0 = state_8; [L321] SORT_1 var_10 = var_10_arg_0 >> 0; [L322] SORT_1 var_52_arg_0 = var_10; VAL [init_16_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_40_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_89_arg_1=0, init_91_arg_1=0, init_9_arg_1=0, input_114=24, input_115=37, input_116=56, input_134=77, input_135=11, input_136=47, input_144=9, input_153=63, input_154=29, input_155=10, input_158=84, input_176=13, input_177=87, input_178=57, input_181=71, input_183=73, input_197=36, input_198=79, input_199=40, input_2=83, input_4=44, input_5=41, input_529=55, input_530=62, input_531=5, input_532=35, input_555=33, input_557=34, input_559=1, input_563=74, input_564=86, input_565=80, input_566=20, input_585=75, input_589=2, input_591=58, input_598=28, input_600=23, input_605=69, input_607=78, input_611=38, input_612=32, input_613=14, input_614=85, input_615=50, input_616=52, input_617=21, input_618=51, input_619=4, input_620=49, input_621=6, input_622=81, input_629=25, input_633=60, input_637=8, input_641=17, input_645=68, input_650=70, input_656=19, input_658=53, input_660=31, input_662=46, input_665=22, input_671=64, input_673=7, input_675=43, input_678=26, input_684=48, input_686=39, input_689=12, input_695=82, input_698=61, input_705=45, input_710=15, input_729=27, input_730=30, input_731=65, input_732=66, input_735=72, input_737=42, input_739=18, input_744=16, input_746=59, input_751=76, input_764=54, input_765=3, input_766=67, mask_SORT_1=1, mask_SORT_11=4294967295, mask_SORT_295=15, mask_SORT_297=31, mask_SORT_299=63, mask_SORT_3=65535, mask_SORT_301=127, mask_SORT_303=255, mask_SORT_305=511, mask_SORT_307=1023, mask_SORT_309=2047, mask_SORT_312=8191, mask_SORT_314=16383, mask_SORT_316=32767, mask_SORT_37=7, mask_SORT_44=3, mask_SORT_533=4294967295, mask_SORT_6=4095, msb_SORT_1=1, msb_SORT_11=2147483648, msb_SORT_295=8, msb_SORT_297=16, msb_SORT_299=32, msb_SORT_3=32768, msb_SORT_301=64, msb_SORT_303=128, msb_SORT_305=256, msb_SORT_307=512, msb_SORT_309=1024, msb_SORT_312=4096, msb_SORT_314=8192, msb_SORT_316=16384, msb_SORT_37=4, msb_SORT_44=2, msb_SORT_533=65536, msb_SORT_6=2048, state_15=0, state_22=0, state_24=0, state_28=0, state_30=0, state_39=0, state_8=0, state_80=0, state_82=0, state_84=0, state_86=0, state_88=0, state_90=0, var_10=0, var_105=4, var_107=5, var_10_arg_0=0, var_111=3, var_128=2, var_13=0, var_138=0, var_145=65535, var_21=0, var_26=0, var_38=0, var_52_arg_0=0, var_534=0, var_57=1, var_626=5, var_630=4, var_634=3, var_638=2, var_642=1, var_646=0, var_7=0, var_93=2, var_97=1] [L323] var_52_arg_0 = var_52_arg_0 & mask_SORT_1 VAL [init_16_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_40_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_89_arg_1=0, init_91_arg_1=0, init_9_arg_1=0, input_114=24, input_115=37, input_116=56, input_134=77, input_135=11, input_136=47, input_144=9, input_153=63, input_154=29, input_155=10, input_158=84, input_176=13, input_177=87, input_178=57, input_181=71, input_183=73, input_197=36, input_198=79, input_199=40, input_2=83, input_4=44, input_5=41, input_529=55, input_530=62, input_531=5, input_532=35, input_555=33, input_557=34, input_559=1, input_563=74, input_564=86, input_565=80, input_566=20, input_585=75, input_589=2, input_591=58, input_598=28, input_600=23, input_605=69, input_607=78, input_611=38, input_612=32, input_613=14, input_614=85, input_615=50, input_616=52, input_617=21, input_618=51, input_619=4, input_620=49, input_621=6, input_622=81, input_629=25, input_633=60, input_637=8, input_641=17, input_645=68, input_650=70, input_656=19, input_658=53, input_660=31, input_662=46, input_665=22, input_671=64, input_673=7, input_675=43, input_678=26, input_684=48, input_686=39, input_689=12, input_695=82, input_698=61, input_705=45, input_710=15, input_729=27, input_730=30, input_731=65, input_732=66, input_735=72, input_737=42, input_739=18, input_744=16, input_746=59, input_751=76, input_764=54, input_765=3, input_766=67, mask_SORT_1=1, mask_SORT_11=4294967295, mask_SORT_295=15, mask_SORT_297=31, mask_SORT_299=63, mask_SORT_3=65535, mask_SORT_301=127, mask_SORT_303=255, mask_SORT_305=511, mask_SORT_307=1023, mask_SORT_309=2047, mask_SORT_312=8191, mask_SORT_314=16383, mask_SORT_316=32767, mask_SORT_37=7, mask_SORT_44=3, mask_SORT_533=4294967295, mask_SORT_6=4095, msb_SORT_1=1, msb_SORT_11=2147483648, msb_SORT_295=8, msb_SORT_297=16, msb_SORT_299=32, msb_SORT_3=32768, msb_SORT_301=64, msb_SORT_303=128, msb_SORT_305=256, msb_SORT_307=512, msb_SORT_309=1024, msb_SORT_312=4096, msb_SORT_314=8192, msb_SORT_316=16384, msb_SORT_37=4, msb_SORT_44=2, msb_SORT_533=65536, msb_SORT_6=2048, state_15=0, state_22=0, state_24=0, state_28=0, state_30=0, state_39=0, state_8=0, state_80=0, state_82=0, state_84=0, state_86=0, state_88=0, state_90=0, var_10=0, var_105=4, var_107=5, var_10_arg_0=0, var_111=3, var_128=2, var_13=0, var_138=0, var_145=65535, var_21=0, var_26=0, var_38=0, var_52_arg_0=0, var_534=0, var_57=1, var_626=5, var_630=4, var_634=3, var_638=2, var_642=1, var_646=0, var_7=0, var_93=2, var_97=1] [L324] SORT_11 var_52 = var_52_arg_0; [L325] SORT_11 var_53_arg_0 = var_52; [L326] SORT_11 var_53_arg_1 = var_13; [L327] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L328] SORT_6 var_17_arg_0 = state_15; [L329] SORT_1 var_17 = var_17_arg_0 >> 0; [L330] SORT_1 var_54_arg_0 = var_17; VAL [init_16_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_40_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_89_arg_1=0, init_91_arg_1=0, init_9_arg_1=0, input_114=24, input_115=37, input_116=56, input_134=77, input_135=11, input_136=47, input_144=9, input_153=63, input_154=29, input_155=10, input_158=84, input_176=13, input_177=87, input_178=57, input_181=71, input_183=73, input_197=36, input_198=79, input_199=40, input_2=83, input_4=44, input_5=41, input_529=55, input_530=62, input_531=5, input_532=35, input_555=33, input_557=34, input_559=1, input_563=74, input_564=86, input_565=80, input_566=20, input_585=75, input_589=2, input_591=58, input_598=28, input_600=23, input_605=69, input_607=78, input_611=38, input_612=32, input_613=14, input_614=85, input_615=50, input_616=52, input_617=21, input_618=51, input_619=4, input_620=49, input_621=6, input_622=81, input_629=25, input_633=60, input_637=8, input_641=17, input_645=68, input_650=70, input_656=19, input_658=53, input_660=31, input_662=46, input_665=22, input_671=64, input_673=7, input_675=43, input_678=26, input_684=48, input_686=39, input_689=12, input_695=82, input_698=61, input_705=45, input_710=15, input_729=27, input_730=30, input_731=65, input_732=66, input_735=72, input_737=42, input_739=18, input_744=16, input_746=59, input_751=76, input_764=54, input_765=3, input_766=67, mask_SORT_1=1, mask_SORT_11=4294967295, mask_SORT_295=15, mask_SORT_297=31, mask_SORT_299=63, mask_SORT_3=65535, mask_SORT_301=127, mask_SORT_303=255, mask_SORT_305=511, mask_SORT_307=1023, mask_SORT_309=2047, mask_SORT_312=8191, mask_SORT_314=16383, mask_SORT_316=32767, mask_SORT_37=7, mask_SORT_44=3, mask_SORT_533=4294967295, mask_SORT_6=4095, msb_SORT_1=1, msb_SORT_11=2147483648, msb_SORT_295=8, msb_SORT_297=16, msb_SORT_299=32, msb_SORT_3=32768, msb_SORT_301=64, msb_SORT_303=128, msb_SORT_305=256, msb_SORT_307=512, msb_SORT_309=1024, msb_SORT_312=4096, msb_SORT_314=8192, msb_SORT_316=16384, msb_SORT_37=4, msb_SORT_44=2, msb_SORT_533=65536, msb_SORT_6=2048, state_15=0, state_22=0, state_24=0, state_28=0, state_30=0, state_39=0, state_8=0, state_80=0, state_82=0, state_84=0, state_86=0, state_88=0, state_90=0, var_10=0, var_105=4, var_107=5, var_10_arg_0=0, var_111=3, var_128=2, var_13=0, var_138=0, var_145=65535, var_17=0, var_17_arg_0=0, var_21=0, var_26=0, var_38=0, var_52=0, var_52_arg_0=0, var_53=1, var_534=0, var_53_arg_0=0, var_53_arg_1=0, var_54_arg_0=0, var_57=1, var_626=5, var_630=4, var_634=3, var_638=2, var_642=1, var_646=0, var_7=0, var_93=2, var_97=1] [L331] var_54_arg_0 = var_54_arg_0 & mask_SORT_1 VAL [init_16_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_40_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_89_arg_1=0, init_91_arg_1=0, init_9_arg_1=0, input_114=24, input_115=37, input_116=56, input_134=77, input_135=11, input_136=47, input_144=9, input_153=63, input_154=29, input_155=10, input_158=84, input_176=13, input_177=87, input_178=57, input_181=71, input_183=73, input_197=36, input_198=79, input_199=40, input_2=83, input_4=44, input_5=41, input_529=55, input_530=62, input_531=5, input_532=35, input_555=33, input_557=34, input_559=1, input_563=74, input_564=86, input_565=80, input_566=20, input_585=75, input_589=2, input_591=58, input_598=28, input_600=23, input_605=69, input_607=78, input_611=38, input_612=32, input_613=14, input_614=85, input_615=50, input_616=52, input_617=21, input_618=51, input_619=4, input_620=49, input_621=6, input_622=81, input_629=25, input_633=60, input_637=8, input_641=17, input_645=68, input_650=70, input_656=19, input_658=53, input_660=31, input_662=46, input_665=22, input_671=64, input_673=7, input_675=43, input_678=26, input_684=48, input_686=39, input_689=12, input_695=82, input_698=61, input_705=45, input_710=15, input_729=27, input_730=30, input_731=65, input_732=66, input_735=72, input_737=42, input_739=18, input_744=16, input_746=59, input_751=76, input_764=54, input_765=3, input_766=67, mask_SORT_1=1, mask_SORT_11=4294967295, mask_SORT_295=15, mask_SORT_297=31, mask_SORT_299=63, mask_SORT_3=65535, mask_SORT_301=127, mask_SORT_303=255, mask_SORT_305=511, mask_SORT_307=1023, mask_SORT_309=2047, mask_SORT_312=8191, mask_SORT_314=16383, mask_SORT_316=32767, mask_SORT_37=7, mask_SORT_44=3, mask_SORT_533=4294967295, mask_SORT_6=4095, msb_SORT_1=1, msb_SORT_11=2147483648, msb_SORT_295=8, msb_SORT_297=16, msb_SORT_299=32, msb_SORT_3=32768, msb_SORT_301=64, msb_SORT_303=128, msb_SORT_305=256, msb_SORT_307=512, msb_SORT_309=1024, msb_SORT_312=4096, msb_SORT_314=8192, msb_SORT_316=16384, msb_SORT_37=4, msb_SORT_44=2, msb_SORT_533=65536, msb_SORT_6=2048, state_15=0, state_22=0, state_24=0, state_28=0, state_30=0, state_39=0, state_8=0, state_80=0, state_82=0, state_84=0, state_86=0, state_88=0, state_90=0, var_10=0, var_105=4, var_107=5, var_10_arg_0=0, var_111=3, var_128=2, var_13=0, var_138=0, var_145=65535, var_17=0, var_17_arg_0=0, var_21=0, var_26=0, var_38=0, var_52=0, var_52_arg_0=0, var_53=1, var_534=0, var_53_arg_0=0, var_53_arg_1=0, var_54_arg_0=0, var_57=1, var_626=5, var_630=4, var_634=3, var_638=2, var_642=1, var_646=0, var_7=0, var_93=2, var_97=1] [L332] SORT_11 var_54 = var_54_arg_0; [L333] SORT_11 var_55_arg_0 = var_54; [L334] SORT_11 var_55_arg_1 = var_13; [L335] SORT_1 var_55 = var_55_arg_0 == var_55_arg_1; [L336] SORT_1 var_56_arg_0 = var_53; [L337] SORT_1 var_56_arg_1 = var_55; [L338] SORT_1 var_56 = var_56_arg_0 & var_56_arg_1; [L339] SORT_1 var_58_arg_0 = var_56; [L340] SORT_1 var_58 = ~var_58_arg_0; [L341] SORT_1 var_59_arg_0 = var_57; [L342] SORT_1 var_59_arg_1 = var_58; [L343] SORT_1 var_59 = var_59_arg_0 & var_59_arg_1; VAL [init_16_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_40_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_89_arg_1=0, init_91_arg_1=0, init_9_arg_1=0, input_114=24, input_115=37, input_116=56, input_134=77, input_135=11, input_136=47, input_144=9, input_153=63, input_154=29, input_155=10, input_158=84, input_176=13, input_177=87, input_178=57, input_181=71, input_183=73, input_197=36, input_198=79, input_199=40, input_2=83, input_4=44, input_5=41, input_529=55, input_530=62, input_531=5, input_532=35, input_555=33, input_557=34, input_559=1, input_563=74, input_564=86, input_565=80, input_566=20, input_585=75, input_589=2, input_591=58, input_598=28, input_600=23, input_605=69, input_607=78, input_611=38, input_612=32, input_613=14, input_614=85, input_615=50, input_616=52, input_617=21, input_618=51, input_619=4, input_620=49, input_621=6, input_622=81, input_629=25, input_633=60, input_637=8, input_641=17, input_645=68, input_650=70, input_656=19, input_658=53, input_660=31, input_662=46, input_665=22, input_671=64, input_673=7, input_675=43, input_678=26, input_684=48, input_686=39, input_689=12, input_695=82, input_698=61, input_705=45, input_710=15, input_729=27, input_730=30, input_731=65, input_732=66, input_735=72, input_737=42, input_739=18, input_744=16, input_746=59, input_751=76, input_764=54, input_765=3, input_766=67, mask_SORT_1=1, mask_SORT_11=4294967295, mask_SORT_295=15, mask_SORT_297=31, mask_SORT_299=63, mask_SORT_3=65535, mask_SORT_301=127, mask_SORT_303=255, mask_SORT_305=511, mask_SORT_307=1023, mask_SORT_309=2047, mask_SORT_312=8191, mask_SORT_314=16383, mask_SORT_316=32767, mask_SORT_37=7, mask_SORT_44=3, mask_SORT_533=4294967295, mask_SORT_6=4095, msb_SORT_1=1, msb_SORT_11=2147483648, msb_SORT_295=8, msb_SORT_297=16, msb_SORT_299=32, msb_SORT_3=32768, msb_SORT_301=64, msb_SORT_303=128, msb_SORT_305=256, msb_SORT_307=512, msb_SORT_309=1024, msb_SORT_312=4096, msb_SORT_314=8192, msb_SORT_316=16384, msb_SORT_37=4, msb_SORT_44=2, msb_SORT_533=65536, msb_SORT_6=2048, state_15=0, state_22=0, state_24=0, state_28=0, state_30=0, state_39=0, state_8=0, state_80=0, state_82=0, state_84=0, state_86=0, state_88=0, state_90=0, var_10=0, var_105=4, var_107=5, var_10_arg_0=0, var_111=3, var_128=2, var_13=0, var_138=0, var_145=65535, var_17=0, var_17_arg_0=0, var_21=0, var_26=0, var_38=0, var_52=0, var_52_arg_0=0, var_53=1, var_534=0, var_53_arg_0=0, var_53_arg_1=0, var_54=0, var_54_arg_0=0, var_55=1, var_55_arg_0=0, var_55_arg_1=0, var_56=1, var_56_arg_0=1, var_56_arg_1=1, var_57=1, var_58=2, var_58_arg_0=1, var_59=1, var_59_arg_0=1, var_59_arg_1=2, var_626=5, var_630=4, var_634=3, var_638=2, var_642=1, var_646=0, var_7=0, var_93=2, var_97=1] [L344] var_59 = var_59 & mask_SORT_1 VAL [init_16_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_40_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_89_arg_1=0, init_91_arg_1=0, init_9_arg_1=0, input_114=24, input_115=37, input_116=56, input_134=77, input_135=11, input_136=47, input_144=9, input_153=63, input_154=29, input_155=10, input_158=84, input_176=13, input_177=87, input_178=57, input_181=71, input_183=73, input_197=36, input_198=79, input_199=40, input_2=83, input_4=44, input_5=41, input_529=55, input_530=62, input_531=5, input_532=35, input_555=33, input_557=34, input_559=1, input_563=74, input_564=86, input_565=80, input_566=20, input_585=75, input_589=2, input_591=58, input_598=28, input_600=23, input_605=69, input_607=78, input_611=38, input_612=32, input_613=14, input_614=85, input_615=50, input_616=52, input_617=21, input_618=51, input_619=4, input_620=49, input_621=6, input_622=81, input_629=25, input_633=60, input_637=8, input_641=17, input_645=68, input_650=70, input_656=19, input_658=53, input_660=31, input_662=46, input_665=22, input_671=64, input_673=7, input_675=43, input_678=26, input_684=48, input_686=39, input_689=12, input_695=82, input_698=61, input_705=45, input_710=15, input_729=27, input_730=30, input_731=65, input_732=66, input_735=72, input_737=42, input_739=18, input_744=16, input_746=59, input_751=76, input_764=54, input_765=3, input_766=67, mask_SORT_1=1, mask_SORT_11=4294967295, mask_SORT_295=15, mask_SORT_297=31, mask_SORT_299=63, mask_SORT_3=65535, mask_SORT_301=127, mask_SORT_303=255, mask_SORT_305=511, mask_SORT_307=1023, mask_SORT_309=2047, mask_SORT_312=8191, mask_SORT_314=16383, mask_SORT_316=32767, mask_SORT_37=7, mask_SORT_44=3, mask_SORT_533=4294967295, mask_SORT_6=4095, msb_SORT_1=1, msb_SORT_11=2147483648, msb_SORT_295=8, msb_SORT_297=16, msb_SORT_299=32, msb_SORT_3=32768, msb_SORT_301=64, msb_SORT_303=128, msb_SORT_305=256, msb_SORT_307=512, msb_SORT_309=1024, msb_SORT_312=4096, msb_SORT_314=8192, msb_SORT_316=16384, msb_SORT_37=4, msb_SORT_44=2, msb_SORT_533=65536, msb_SORT_6=2048, state_15=0, state_22=0, state_24=0, state_28=0, state_30=0, state_39=0, state_8=0, state_80=0, state_82=0, state_84=0, state_86=0, state_88=0, state_90=0, var_10=0, var_105=4, var_107=5, var_10_arg_0=0, var_111=3, var_128=2, var_13=0, var_138=0, var_145=65535, var_17=0, var_17_arg_0=0, var_21=0, var_26=0, var_38=0, var_52=0, var_52_arg_0=0, var_53=1, var_534=0, var_53_arg_0=0, var_53_arg_1=0, var_54=0, var_54_arg_0=0, var_55=1, var_55_arg_0=0, var_55_arg_1=0, var_56=1, var_56_arg_0=1, var_56_arg_1=1, var_57=1, var_58=2, var_58_arg_0=1, var_59=1, var_59_arg_0=1, var_59_arg_1=2, var_626=5, var_630=4, var_634=3, var_638=2, var_642=1, var_646=0, var_7=0, var_93=2, var_97=1] [L345] SORT_1 bad_60_arg_0 = var_59; VAL [bad_60_arg_0=1, init_16_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_40_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_89_arg_1=0, init_91_arg_1=0, init_9_arg_1=0, input_114=24, input_115=37, input_116=56, input_134=77, input_135=11, input_136=47, input_144=9, input_153=63, input_154=29, input_155=10, input_158=84, input_176=13, input_177=87, input_178=57, input_181=71, input_183=73, input_197=36, input_198=79, input_199=40, input_2=83, input_4=44, input_5=41, input_529=55, input_530=62, input_531=5, input_532=35, input_555=33, input_557=34, input_559=1, input_563=74, input_564=86, input_565=80, input_566=20, input_585=75, input_589=2, input_591=58, input_598=28, input_600=23, input_605=69, input_607=78, input_611=38, input_612=32, input_613=14, input_614=85, input_615=50, input_616=52, input_617=21, input_618=51, input_619=4, input_620=49, input_621=6, input_622=81, input_629=25, input_633=60, input_637=8, input_641=17, input_645=68, input_650=70, input_656=19, input_658=53, input_660=31, input_662=46, input_665=22, input_671=64, input_673=7, input_675=43, input_678=26, input_684=48, input_686=39, input_689=12, input_695=82, input_698=61, input_705=45, input_710=15, input_729=27, input_730=30, input_731=65, input_732=66, input_735=72, input_737=42, input_739=18, input_744=16, input_746=59, input_751=76, input_764=54, input_765=3, input_766=67, mask_SORT_1=1, mask_SORT_11=4294967295, mask_SORT_295=15, mask_SORT_297=31, mask_SORT_299=63, mask_SORT_3=65535, mask_SORT_301=127, mask_SORT_303=255, mask_SORT_305=511, mask_SORT_307=1023, mask_SORT_309=2047, mask_SORT_312=8191, mask_SORT_314=16383, mask_SORT_316=32767, mask_SORT_37=7, mask_SORT_44=3, mask_SORT_533=4294967295, mask_SORT_6=4095, msb_SORT_1=1, msb_SORT_11=2147483648, msb_SORT_295=8, msb_SORT_297=16, msb_SORT_299=32, msb_SORT_3=32768, msb_SORT_301=64, msb_SORT_303=128, msb_SORT_305=256, msb_SORT_307=512, msb_SORT_309=1024, msb_SORT_312=4096, msb_SORT_314=8192, msb_SORT_316=16384, msb_SORT_37=4, msb_SORT_44=2, msb_SORT_533=65536, msb_SORT_6=2048, state_15=0, state_22=0, state_24=0, state_28=0, state_30=0, state_39=0, state_8=0, state_80=0, state_82=0, state_84=0, state_86=0, state_88=0, state_90=0, var_10=0, var_105=4, var_107=5, var_10_arg_0=0, var_111=3, var_128=2, var_13=0, var_138=0, var_145=65535, var_17=0, var_17_arg_0=0, var_21=0, var_26=0, var_38=0, var_52=0, var_52_arg_0=0, var_53=1, var_534=0, var_53_arg_0=0, var_53_arg_1=0, var_54=0, var_54_arg_0=0, var_55=1, var_55_arg_0=0, var_55_arg_1=0, var_56=1, var_56_arg_0=1, var_56_arg_1=1, var_57=1, var_58=2, var_58_arg_0=1, var_59=1, var_59_arg_0=1, var_59_arg_1=2, var_626=5, var_630=4, var_634=3, var_638=2, var_642=1, var_646=0, var_7=0, var_93=2, var_97=1] [L346] CALL __VERIFIER_assert(!(bad_60_arg_0)) VAL [\old(cond)=0] [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 531 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1710 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1710 mSDsluCounter, 4426 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3524 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 902 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=533occurred in iteration=1, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 519 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 11:46:30,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8 --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 204d10239a0b36d2351863a85d337d8394fa6f65e7ffe92c9fae442e87993f63 --- 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-e04fb08 [2022-11-16 11:46:32,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:46:32,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:46:32,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:46:32,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:46:32,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:46:32,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:46:32,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:46:32,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:46:32,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:46:32,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:46:32,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:46:32,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:46:32,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:46:32,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:46:32,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:46:32,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:46:32,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:46:32,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:46:32,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:46:32,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:46:32,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:46:32,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:46:32,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:46:32,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:46:32,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:46:32,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:46:32,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:46:32,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:46:32,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:46:32,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:46:32,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:46:32,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:46:32,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:46:32,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:46:32,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:46:32,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:46:32,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:46:32,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:46:32,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:46:32,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:46:32,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-16 11:46:32,765 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:46:32,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:46:32,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:46:32,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:46:32,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:46:32,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:46:32,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:46:32,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:46:32,772 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:46:32,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:46:32,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:46:32,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:46:32,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:46:32,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:46:32,774 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:46:32,774 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:46:32,775 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:46:32,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:46:32,775 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:46:32,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:46:32,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:46:32,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:46:32,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:46:32,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:46:32,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:46:32,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:46:32,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:46:32,777 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:46:32,777 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:46:32,777 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:46:32,778 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:46:32,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:46:32,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:46:32,778 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 204d10239a0b36d2351863a85d337d8394fa6f65e7ffe92c9fae442e87993f63 [2022-11-16 11:46:33,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:46:33,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:46:33,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:46:33,162 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:46:33,165 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:46:33,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c [2022-11-16 11:46:33,238 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/data/abb37ea7c/35cd950bb0d446f7a620d5a034564dad/FLAG8a9b35e16 [2022-11-16 11:46:34,042 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:46:34,042 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c [2022-11-16 11:46:34,068 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/data/abb37ea7c/35cd950bb0d446f7a620d5a034564dad/FLAG8a9b35e16 [2022-11-16 11:46:34,196 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/data/abb37ea7c/35cd950bb0d446f7a620d5a034564dad [2022-11-16 11:46:34,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:46:34,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:46:34,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:46:34,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:46:34,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:46:34,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:46:34" (1/1) ... [2022-11-16 11:46:34,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196a85fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:34, skipping insertion in model container [2022-11-16 11:46:34,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:46:34" (1/1) ... [2022-11-16 11:46:34,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:46:34,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:46:34,461 WARN L229 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_2958883e-fece-434e-9ff8-cebbfe1d8a5e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c[1107,1120] [2022-11-16 11:46:34,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:46:34,978 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:46:34,989 WARN L229 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_2958883e-fece-434e-9ff8-cebbfe1d8a5e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c[1107,1120] [2022-11-16 11:46:35,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:46:35,245 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:46:35,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:35 WrapperNode [2022-11-16 11:46:35,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:46:35,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:46:35,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:46:35,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:46:35,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:35" (1/1) ... [2022-11-16 11:46:35,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:35" (1/1) ... [2022-11-16 11:46:35,452 INFO L138 Inliner]: procedures = 11, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2431 [2022-11-16 11:46:35,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:46:35,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:46:35,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:46:35,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:46:35,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:35" (1/1) ... [2022-11-16 11:46:35,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:35" (1/1) ... [2022-11-16 11:46:35,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:35" (1/1) ... [2022-11-16 11:46:35,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:35" (1/1) ... [2022-11-16 11:46:35,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:35" (1/1) ... [2022-11-16 11:46:35,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:35" (1/1) ... [2022-11-16 11:46:35,578 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:35" (1/1) ... [2022-11-16 11:46:35,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:35" (1/1) ... [2022-11-16 11:46:35,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:46:35,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:46:35,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:46:35,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:46:35,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:35" (1/1) ... [2022-11-16 11:46:35,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:46:35,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:35,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:46:35,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:46:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:46:35,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:46:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:46:35,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:46:36,314 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:46:36,316 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:46:40,609 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:46:40,616 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:46:40,617 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:46:40,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:46:40 BoogieIcfgContainer [2022-11-16 11:46:40,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:46:40,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:46:40,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:46:40,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:46:40,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:46:34" (1/3) ... [2022-11-16 11:46:40,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e7873c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:46:40, skipping insertion in model container [2022-11-16 11:46:40,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:35" (2/3) ... [2022-11-16 11:46:40,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e7873c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:46:40, skipping insertion in model container [2022-11-16 11:46:40,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:46:40" (3/3) ... [2022-11-16 11:46:40,627 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Vsa16.c [2022-11-16 11:46:40,646 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:46:40,646 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:46:40,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:46:40,702 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;@7c84d4f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:46:40,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:46:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:46:40,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:46:40,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:40,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:40,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:40,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1810462814, now seen corresponding path program 1 times [2022-11-16 11:46:40,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:46:40,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922670629] [2022-11-16 11:46:40,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:40,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:40,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:46:40,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:46:40,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 11:46:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:41,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 11:46:41,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:46:41,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:46:41,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:46:41,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922670629] [2022-11-16 11:46:41,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922670629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:41,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:41,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:46:41,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984319528] [2022-11-16 11:46:41,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:41,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:46:41,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:46:41,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:46:41,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:46:41,753 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-11-16 11:46:42,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:42,145 INFO L93 Difference]: Finished difference Result 42 states and 61 transitions. [2022-11-16 11:46:42,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:46:42,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 7 [2022-11-16 11:46:42,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:42,161 INFO L225 Difference]: With dead ends: 42 [2022-11-16 11:46:42,162 INFO L226 Difference]: Without dead ends: 23 [2022-11-16 11:46:42,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:46:42,174 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:42,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 73 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 8 Unchecked, 0.3s Time] [2022-11-16 11:46:42,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-16 11:46:42,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-16 11:46:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 11:46:42,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-16 11:46:42,219 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 7 [2022-11-16 11:46:42,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:42,220 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-16 11:46:42,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-11-16 11:46:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-16 11:46:42,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:46:42,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:42,223 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:42,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:42,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:42,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:42,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:42,437 INFO L85 PathProgramCache]: Analyzing trace with hash -995691336, now seen corresponding path program 1 times [2022-11-16 11:46:42,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:46:42,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719755922] [2022-11-16 11:46:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:42,439 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:42,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:46:42,440 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:46:42,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 11:46:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:42,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 11:46:42,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:46:43,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:46:43,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:46:43,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719755922] [2022-11-16 11:46:43,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719755922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:43,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:43,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:46:43,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727566745] [2022-11-16 11:46:43,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:43,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:46:43,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:46:43,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:46:43,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:46:43,193 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:46:43,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:43,587 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-11-16 11:46:43,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:46:43,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-16 11:46:43,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:43,589 INFO L225 Difference]: With dead ends: 31 [2022-11-16 11:46:43,589 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 11:46:43,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:46:43,591 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:43,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 83 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 10 Unchecked, 0.4s Time] [2022-11-16 11:46:43,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 11:46:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 11:46:43,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:46:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-11-16 11:46:43,600 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 13 [2022-11-16 11:46:43,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:43,601 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-11-16 11:46:43,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:46:43,601 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-11-16 11:46:43,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:46:43,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:43,602 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:43,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-16 11:46:43,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:43,815 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:43,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:43,815 INFO L85 PathProgramCache]: Analyzing trace with hash -53539184, now seen corresponding path program 1 times [2022-11-16 11:46:43,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:46:43,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89621779] [2022-11-16 11:46:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:43,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:43,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:46:43,818 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:46:43,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 11:46:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:44,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:46:44,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:46:44,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:46:44,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:46:44,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89621779] [2022-11-16 11:46:44,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89621779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:44,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:44,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:46:44,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26830505] [2022-11-16 11:46:44,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:44,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:46:44,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:46:44,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:46:44,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:46:44,496 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:46:45,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:45,009 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-11-16 11:46:45,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:46:45,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-16 11:46:45,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:45,010 INFO L225 Difference]: With dead ends: 37 [2022-11-16 11:46:45,010 INFO L226 Difference]: Without dead ends: 35 [2022-11-16 11:46:45,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:46:45,012 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:45,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 85 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 11 Unchecked, 0.5s Time] [2022-11-16 11:46:45,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-16 11:46:45,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-16 11:46:45,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 11:46:45,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-11-16 11:46:45,022 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 19 [2022-11-16 11:46:45,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:45,023 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-11-16 11:46:45,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:46:45,023 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-11-16 11:46:45,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:46:45,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:45,024 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:45,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:45,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:45,241 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:45,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:45,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1735839898, now seen corresponding path program 1 times [2022-11-16 11:46:45,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:46:45,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844557006] [2022-11-16 11:46:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:45,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:45,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:46:45,245 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:46:45,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 11:46:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:45,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-16 11:46:45,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:46:46,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:46:46,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:46:46,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844557006] [2022-11-16 11:46:46,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844557006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:46,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:46,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:46:46,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430809417] [2022-11-16 11:46:46,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:46,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:46:46,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:46:46,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:46:46,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:46:46,331 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:46:47,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:47,230 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2022-11-16 11:46:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:46:47,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-11-16 11:46:47,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:47,232 INFO L225 Difference]: With dead ends: 43 [2022-11-16 11:46:47,232 INFO L226 Difference]: Without dead ends: 41 [2022-11-16 11:46:47,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:46:47,233 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:47,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 110 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 13 Unchecked, 0.8s Time] [2022-11-16 11:46:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-16 11:46:47,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-16 11:46:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:46:47,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-11-16 11:46:47,244 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 25 [2022-11-16 11:46:47,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:47,244 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-11-16 11:46:47,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:46:47,245 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-11-16 11:46:47,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 11:46:47,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:47,246 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:47,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-16 11:46:47,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:47,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:47,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2127961366, now seen corresponding path program 1 times [2022-11-16 11:46:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:46:47,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241316930] [2022-11-16 11:46:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:47,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:47,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:46:47,466 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:46:47,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 11:46:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:48,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 2196 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-16 11:46:48,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:46:49,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:46:50,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:46:50,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241316930] [2022-11-16 11:46:50,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241316930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:46:50,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1090810004] [2022-11-16 11:46:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:50,723 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:46:50,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:46:50,731 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:46:50,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-16 11:46:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:53,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 2196 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-16 11:46:53,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:46:53,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:46:54,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1090810004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:46:54,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:46:54,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-16 11:46:54,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470374358] [2022-11-16 11:46:54,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:46:54,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:46:54,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:46:54,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:46:54,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:46:54,278 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 9 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 11:46:55,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:55,215 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2022-11-16 11:46:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:46:55,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 32 [2022-11-16 11:46:55,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:55,217 INFO L225 Difference]: With dead ends: 58 [2022-11-16 11:46:55,218 INFO L226 Difference]: Without dead ends: 56 [2022-11-16 11:46:55,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:46:55,219 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:55,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 165 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 23 Unchecked, 0.9s Time] [2022-11-16 11:46:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-16 11:46:55,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2022-11-16 11:46:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:46:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2022-11-16 11:46:55,231 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 32 [2022-11-16 11:46:55,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:55,231 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2022-11-16 11:46:55,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 11:46:55,232 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2022-11-16 11:46:55,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-16 11:46:55,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:55,233 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:55,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:55,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:55,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:46:55,657 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:55,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:55,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2047029104, now seen corresponding path program 2 times [2022-11-16 11:46:55,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:46:55,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975194824] [2022-11-16 11:46:55,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:46:55,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:55,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:46:55,660 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:46:55,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 11:46:56,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:46:56,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:46:56,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 259 conjunts are in the unsatisfiable core [2022-11-16 11:46:56,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:46:59,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:00,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:47:00,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975194824] [2022-11-16 11:47:00,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975194824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:00,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [947343321] [2022-11-16 11:47:00,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:47:00,470 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:47:00,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:47:00,475 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:47:00,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-16 11:47:02,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:47:02,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:47:02,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 262 conjunts are in the unsatisfiable core [2022-11-16 11:47:02,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:47:05,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:05,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [947343321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:05,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:47:05,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-11-16 11:47:05,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613645266] [2022-11-16 11:47:05,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:05,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:47:05,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:47:05,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:47:05,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:47:05,782 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:47:06,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:06,719 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-11-16 11:47:06,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:47:06,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2022-11-16 11:47:06,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:06,722 INFO L225 Difference]: With dead ends: 61 [2022-11-16 11:47:06,722 INFO L226 Difference]: Without dead ends: 59 [2022-11-16 11:47:06,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:47:06,723 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:06,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 89 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 12 Unchecked, 0.7s Time] [2022-11-16 11:47:06,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-16 11:47:06,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2022-11-16 11:47:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:47:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2022-11-16 11:47:06,736 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 38 [2022-11-16 11:47:06,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:06,737 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2022-11-16 11:47:06,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:47:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2022-11-16 11:47:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 11:47:06,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:06,739 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:06,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:06,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:07,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:47:07,144 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:07,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1813143368, now seen corresponding path program 3 times [2022-11-16 11:47:07,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:47:07,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657813517] [2022-11-16 11:47:07,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:47:07,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:47:07,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:47:07,147 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:47:07,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 11:47:08,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 11:47:08,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:47:08,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 11:47:08,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:47:08,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:08,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:47:08,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657813517] [2022-11-16 11:47:08,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657813517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:08,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [503414742] [2022-11-16 11:47:08,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:47:08,697 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:47:08,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:47:08,698 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:47:08,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-16 11:47:10,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 11:47:10,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:47:10,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-16 11:47:10,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:11,100 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:47:11,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:11,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [503414742] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:11,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:47:11,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-11-16 11:47:11,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370728548] [2022-11-16 11:47:11,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:11,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:47:11,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:47:11,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:47:11,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:47:11,218 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:47:11,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:11,759 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2022-11-16 11:47:11,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:47:11,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2022-11-16 11:47:11,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:11,761 INFO L225 Difference]: With dead ends: 62 [2022-11-16 11:47:11,761 INFO L226 Difference]: Without dead ends: 60 [2022-11-16 11:47:11,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:47:11,762 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:11,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 100 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 30 Unchecked, 0.5s Time] [2022-11-16 11:47:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-16 11:47:11,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-16 11:47:11,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 11:47:11,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2022-11-16 11:47:11,776 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 44 [2022-11-16 11:47:11,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:11,776 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2022-11-16 11:47:11,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:47:11,777 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2022-11-16 11:47:11,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 11:47:11,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:11,778 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:11,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:12,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:12,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:47:12,191 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:12,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:12,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1099634206, now seen corresponding path program 4 times [2022-11-16 11:47:12,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:47:12,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222070229] [2022-11-16 11:47:12,194 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:47:12,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:47:12,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:47:12,195 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:47:12,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 11:47:13,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:47:13,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:47:13,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 2318 conjuncts, 327 conjunts are in the unsatisfiable core [2022-11-16 11:47:13,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 11:47:17,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:19,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:47:19,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222070229] [2022-11-16 11:47:19,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222070229] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:19,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [285044444] [2022-11-16 11:47:19,361 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:47:19,361 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:47:19,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:47:19,362 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:47:19,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-16 11:47:21,647 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:47:21,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:47:21,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 2318 conjuncts, 333 conjunts are in the unsatisfiable core [2022-11-16 11:47:21,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 11:47:25,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:26,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [285044444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:26,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:47:26,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2022-11-16 11:47:26,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038126414] [2022-11-16 11:47:26,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:26,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:47:26,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:47:26,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:47:26,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:47:26,499 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 11:47:27,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:27,581 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2022-11-16 11:47:27,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:47:27,582 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 50 [2022-11-16 11:47:27,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:27,583 INFO L225 Difference]: With dead ends: 69 [2022-11-16 11:47:27,583 INFO L226 Difference]: Without dead ends: 67 [2022-11-16 11:47:27,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:47:27,584 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:27,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 162 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 105 Invalid, 0 Unknown, 15 Unchecked, 0.9s Time] [2022-11-16 11:47:27,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-16 11:47:27,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2022-11-16 11:47:27,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 45 states have internal predecessors, (45), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 11:47:27,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2022-11-16 11:47:27,598 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 50 [2022-11-16 11:47:27,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:27,598 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2022-11-16 11:47:27,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 11:47:27,599 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2022-11-16 11:47:27,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 11:47:27,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:27,600 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-16 11:47:27,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:27,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2022-11-16 11:47:28,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:47:28,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:28,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:28,024 INFO L85 PathProgramCache]: Analyzing trace with hash -623003810, now seen corresponding path program 5 times [2022-11-16 11:47:28,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:47:28,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224798487] [2022-11-16 11:47:28,027 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:47:28,027 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:47:28,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:47:28,027 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:47:28,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 11:47:29,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-16 11:47:29,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:47:29,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 4190 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-16 11:47:29,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 40 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-16 11:47:31,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:32,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:47:32,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224798487] [2022-11-16 11:47:32,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224798487] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:32,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [30846695] [2022-11-16 11:47:32,884 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:47:32,884 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:47:32,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:47:32,891 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:47:32,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-16 11:47:37,107 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-16 11:47:37,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:47:37,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 4190 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-16 11:47:37,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-16 11:47:38,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:39,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [30846695] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:39,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:47:39,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 19 [2022-11-16 11:47:39,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167916559] [2022-11-16 11:47:39,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:39,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:47:39,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:47:39,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:47:39,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:47:39,449 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 19 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 17 states have internal predecessors, (34), 9 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-16 11:47:42,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:42,174 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2022-11-16 11:47:42,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:47:42,175 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 17 states have internal predecessors, (34), 9 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) Word has length 57 [2022-11-16 11:47:42,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:42,176 INFO L225 Difference]: With dead ends: 83 [2022-11-16 11:47:42,177 INFO L226 Difference]: Without dead ends: 81 [2022-11-16 11:47:42,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=165, Invalid=957, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:47:42,178 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 29 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:42,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 175 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 282 Invalid, 0 Unknown, 171 Unchecked, 1.9s Time] [2022-11-16 11:47:42,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-16 11:47:42,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2022-11-16 11:47:42,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 50 states have internal predecessors, (50), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 11:47:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2022-11-16 11:47:42,197 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 57 [2022-11-16 11:47:42,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:42,197 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2022-11-16 11:47:42,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 17 states have internal predecessors, (34), 9 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-16 11:47:42,198 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2022-11-16 11:47:42,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:47:42,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:42,199 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-16 11:47:42,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:42,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:42,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:47:42,606 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:42,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:42,606 INFO L85 PathProgramCache]: Analyzing trace with hash -718277704, now seen corresponding path program 6 times [2022-11-16 11:47:42,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:47:42,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806575495] [2022-11-16 11:47:42,609 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:47:42,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:47:42,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:47:42,614 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:47:42,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 11:47:43,824 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-16 11:47:43,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:47:43,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 2194 conjuncts, 374 conjunts are in the unsatisfiable core [2022-11-16 11:47:43,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 32 proven. 24 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-16 11:47:53,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:54,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:47:54,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806575495] [2022-11-16 11:47:54,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806575495] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:54,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [619043656] [2022-11-16 11:47:54,523 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:47:54,523 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:47:54,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:47:54,524 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:47:54,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-16 11:47:57,109 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-16 11:47:57,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:47:57,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 2194 conjuncts, 445 conjunts are in the unsatisfiable core [2022-11-16 11:47:57,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 36 proven. 41 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-16 11:48:11,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:12,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [619043656] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:12,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:48:12,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 17 [2022-11-16 11:48:12,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663012835] [2022-11-16 11:48:12,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:12,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:48:12,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:48:12,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:48:12,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:48:12,024 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 17 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 16 states have internal predecessors, (34), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 9 states have call successors, (16) [2022-11-16 11:48:13,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:48:15,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:15,363 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2022-11-16 11:48:15,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:48:15,363 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 16 states have internal predecessors, (34), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 9 states have call successors, (16) Word has length 63 [2022-11-16 11:48:15,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:15,364 INFO L225 Difference]: With dead ends: 79 [2022-11-16 11:48:15,364 INFO L226 Difference]: Without dead ends: 77 [2022-11-16 11:48:15,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 117 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:48:15,366 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:15,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 87 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 162 Invalid, 0 Unknown, 38 Unchecked, 2.6s Time] [2022-11-16 11:48:15,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-16 11:48:15,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-16 11:48:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 53 states have internal predecessors, (53), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 11:48:15,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2022-11-16 11:48:15,391 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 63 [2022-11-16 11:48:15,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:48:15,392 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2022-11-16 11:48:15,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 16 states have internal predecessors, (34), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 9 states have call successors, (16) [2022-11-16 11:48:15,392 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2022-11-16 11:48:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:48:15,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:48:15,393 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-16 11:48:15,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:15,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:15,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:48:15,805 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:48:15,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash -597897840, now seen corresponding path program 7 times [2022-11-16 11:48:15,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:48:15,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375938841] [2022-11-16 11:48:15,809 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:48:15,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:48:15,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:48:15,810 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:48:15,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 11:48:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:17,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 4250 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 11:48:17,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-16 11:48:17,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:18,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:48:18,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375938841] [2022-11-16 11:48:18,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375938841] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:18,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1838672745] [2022-11-16 11:48:18,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:48:18,198 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:48:18,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:48:18,203 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:48:18,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-16 11:48:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:21,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 4250 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 11:48:21,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-16 11:48:22,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:22,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1838672745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:22,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:48:22,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-16 11:48:22,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049772584] [2022-11-16 11:48:22,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:22,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:48:22,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:48:22,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:48:22,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:48:22,629 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-16 11:48:23,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:23,752 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2022-11-16 11:48:23,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:48:23,753 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 69 [2022-11-16 11:48:23,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:23,754 INFO L225 Difference]: With dead ends: 87 [2022-11-16 11:48:23,754 INFO L226 Difference]: Without dead ends: 85 [2022-11-16 11:48:23,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 134 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:48:23,756 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 7 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:23,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 170 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 49 Unchecked, 1.0s Time] [2022-11-16 11:48:23,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-16 11:48:23,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-16 11:48:23,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 58 states have internal predecessors, (58), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 11:48:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2022-11-16 11:48:23,781 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 69 [2022-11-16 11:48:23,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:48:23,782 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2022-11-16 11:48:23,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-16 11:48:23,782 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2022-11-16 11:48:23,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 11:48:23,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:48:23,784 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2022-11-16 11:48:23,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:24,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-11-16 11:48:24,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:48:24,188 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:48:24,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1601458586, now seen corresponding path program 8 times [2022-11-16 11:48:24,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:48:24,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212185625] [2022-11-16 11:48:24,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:48:24,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:48:24,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:48:24,192 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:48:24,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 11:48:25,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:48:25,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:48:25,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 4312 conjuncts, 571 conjunts are in the unsatisfiable core [2022-11-16 11:48:25,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-16 11:48:35,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:37,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:48:37,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212185625] [2022-11-16 11:48:37,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212185625] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:37,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2009568512] [2022-11-16 11:48:37,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:48:37,677 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:48:37,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:48:37,678 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:48:37,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-16 11:48:41,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:48:41,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:48:41,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 4312 conjuncts, 578 conjunts are in the unsatisfiable core [2022-11-16 11:48:41,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-16 11:48:50,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:51,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2009568512] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:51,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:48:51,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2022-11-16 11:48:51,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771445812] [2022-11-16 11:48:51,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:51,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:48:51,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:48:51,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:48:51,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:48:51,898 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-16 11:48:53,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:53,995 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2022-11-16 11:48:53,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:48:53,996 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 75 [2022-11-16 11:48:53,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:53,997 INFO L225 Difference]: With dead ends: 94 [2022-11-16 11:48:53,997 INFO L226 Difference]: Without dead ends: 92 [2022-11-16 11:48:53,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:48:53,998 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:53,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 227 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 182 Invalid, 0 Unknown, 21 Unchecked, 1.9s Time] [2022-11-16 11:48:53,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-16 11:48:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2022-11-16 11:48:54,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 62 states have internal predecessors, (62), 16 states have call successors, (16), 13 states have call predecessors, (16), 13 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 11:48:54,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2022-11-16 11:48:54,026 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 75 [2022-11-16 11:48:54,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:48:54,027 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2022-11-16 11:48:54,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-16 11:48:54,027 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2022-11-16 11:48:54,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 11:48:54,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:48:54,029 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2022-11-16 11:48:54,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2022-11-16 11:48:54,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:54,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:48:54,432 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:48:54,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:54,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2049524202, now seen corresponding path program 9 times [2022-11-16 11:48:54,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:48:54,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827444982] [2022-11-16 11:48:54,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:48:54,439 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:48:54,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:48:54,440 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:48:54,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 11:48:57,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-16 11:48:57,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:48:57,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 6092 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-16 11:48:57,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 56 proven. 34 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-16 11:48:58,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:49:00,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:49:00,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827444982] [2022-11-16 11:49:00,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827444982] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:49:00,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1717341303] [2022-11-16 11:49:00,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:49:00,237 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:49:00,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:49:00,238 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:49:00,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-16 11:49:06,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-16 11:49:06,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:49:06,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 6092 conjuncts, 127 conjunts are in the unsatisfiable core [2022-11-16 11:49:06,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-16 11:49:08,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:49:09,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1717341303] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:49:09,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:49:09,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 19 [2022-11-16 11:49:09,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799622309] [2022-11-16 11:49:09,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:49:09,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:49:09,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:49:09,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:49:09,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:49:09,493 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 19 states, 16 states have (on average 2.75) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-11-16 11:49:12,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:12,732 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2022-11-16 11:49:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:49:12,732 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 2.75) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 82 [2022-11-16 11:49:12,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:12,734 INFO L225 Difference]: With dead ends: 100 [2022-11-16 11:49:12,734 INFO L226 Difference]: Without dead ends: 98 [2022-11-16 11:49:12,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=216, Invalid=1190, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 11:49:12,735 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:12,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 128 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 170 Unchecked, 1.7s Time] [2022-11-16 11:49:12,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-16 11:49:12,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-16 11:49:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 67 states have internal predecessors, (67), 17 states have call successors, (17), 14 states have call predecessors, (17), 14 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 11:49:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2022-11-16 11:49:12,762 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 82 [2022-11-16 11:49:12,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:12,763 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2022-11-16 11:49:12,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 2.75) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-11-16 11:49:12,763 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2022-11-16 11:49:12,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-16 11:49:12,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:12,765 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2022-11-16 11:49:12,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:13,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:13,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:49:13,171 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:13,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:13,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1512669256, now seen corresponding path program 10 times [2022-11-16 11:49:13,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:49:13,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794611574] [2022-11-16 11:49:13,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:49:13,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:49:13,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:49:13,176 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:49:13,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-16 11:49:15,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:49:15,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:49:15,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 6244 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-16 11:49:15,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 28 proven. 45 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-16 11:49:16,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:49:16,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:49:16,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794611574] [2022-11-16 11:49:16,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794611574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:49:16,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [930564352] [2022-11-16 11:49:16,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:49:16,402 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:49:16,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:49:16,404 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:49:16,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-16 11:49:21,313 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:49:21,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:49:21,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 6244 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-16 11:49:21,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 28 proven. 45 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-16 11:49:22,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:49:22,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [930564352] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:49:22,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:49:22,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-16 11:49:22,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777656823] [2022-11-16 11:49:22,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:49:22,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:49:22,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:49:22,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:49:22,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:49:22,638 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 14 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-16 11:49:25,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:25,316 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2022-11-16 11:49:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:49:25,317 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) Word has length 94 [2022-11-16 11:49:25,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:25,318 INFO L225 Difference]: With dead ends: 116 [2022-11-16 11:49:25,318 INFO L226 Difference]: Without dead ends: 114 [2022-11-16 11:49:25,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 182 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:49:25,319 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 25 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:25,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 277 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 300 Invalid, 0 Unknown, 1 Unchecked, 2.4s Time] [2022-11-16 11:49:25,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-16 11:49:25,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2022-11-16 11:49:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 72 states have internal predecessors, (72), 19 states have call successors, (19), 15 states have call predecessors, (19), 15 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-16 11:49:25,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2022-11-16 11:49:25,361 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 94 [2022-11-16 11:49:25,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:25,361 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2022-11-16 11:49:25,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 10 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-16 11:49:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2022-11-16 11:49:25,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 11:49:25,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:25,363 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2022-11-16 11:49:25,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:25,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:25,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:49:25,763 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:25,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:25,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1341819106, now seen corresponding path program 11 times [2022-11-16 11:49:25,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:49:25,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603900773] [2022-11-16 11:49:25,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:49:25,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:49:25,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:49:25,770 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:49:25,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-16 11:49:28,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-16 11:49:28,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:49:28,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 6306 conjuncts, 190 conjunts are in the unsatisfiable core [2022-11-16 11:49:28,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 95 proven. 118 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-11-16 11:49:31,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:49:33,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:49:33,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603900773] [2022-11-16 11:49:33,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603900773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:49:33,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [138200929] [2022-11-16 11:49:33,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:49:33,923 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:49:33,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:49:33,924 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:49:33,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-16 11:49:40,751 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-16 11:49:40,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:49:40,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 6306 conjuncts, 833 conjunts are in the unsatisfiable core [2022-11-16 11:49:41,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 30 proven. 51 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-11-16 11:50:00,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:50:02,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [138200929] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:02,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:50:02,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11] total 27 [2022-11-16 11:50:02,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082908132] [2022-11-16 11:50:02,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:50:02,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 11:50:02,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:50:02,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 11:50:02,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:50:02,041 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand has 27 states, 21 states have (on average 2.380952380952381) internal successors, (50), 24 states have internal predecessors, (50), 16 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 12 states have call predecessors, (30), 14 states have call successors, (30) [2022-11-16 11:50:11,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:11,466 INFO L93 Difference]: Finished difference Result 119 states and 122 transitions. [2022-11-16 11:50:11,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:50:11,467 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 21 states have (on average 2.380952380952381) internal successors, (50), 24 states have internal predecessors, (50), 16 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 12 states have call predecessors, (30), 14 states have call successors, (30) Word has length 100 [2022-11-16 11:50:11,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:11,468 INFO L225 Difference]: With dead ends: 119 [2022-11-16 11:50:11,468 INFO L226 Difference]: Without dead ends: 117 [2022-11-16 11:50:11,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 182 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 11:50:11,470 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 51 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:11,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 261 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 533 Invalid, 0 Unknown, 274 Unchecked, 3.4s Time] [2022-11-16 11:50:11,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-16 11:50:11,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2022-11-16 11:50:11,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 79 states have internal predecessors, (79), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:50:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2022-11-16 11:50:11,515 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 100 [2022-11-16 11:50:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:11,515 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2022-11-16 11:50:11,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 21 states have (on average 2.380952380952381) internal successors, (50), 24 states have internal predecessors, (50), 16 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 12 states have call predecessors, (30), 14 states have call successors, (30) [2022-11-16 11:50:11,516 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2022-11-16 11:50:11,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-16 11:50:11,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:11,517 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2022-11-16 11:50:11,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-16 11:50:11,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:11,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:50:11,931 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:11,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:11,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1629763166, now seen corresponding path program 12 times [2022-11-16 11:50:11,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:50:11,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635707917] [2022-11-16 11:50:11,936 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:50:11,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:50:11,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:50:11,937 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:50:11,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-16 11:50:15,149 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-11-16 11:50:15,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:50:15,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 8058 conjuncts, 258 conjunts are in the unsatisfiable core [2022-11-16 11:50:15,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:26,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:50:26,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635707917] [2022-11-16 11:50:26,587 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-16 11:50:26,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:26,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:50:26,788 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-16 11:50:26,791 INFO L158 Benchmark]: Toolchain (without parser) took 232591.58ms. Allocated memory was 69.2MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 47.2MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-16 11:50:26,792 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory was 50.4MB in the beginning and 50.3MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:50:26,792 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1045.04ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 47.0MB in the beginning and 51.0MB in the end (delta: -4.0MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2022-11-16 11:50:26,792 INFO L158 Benchmark]: Boogie Procedure Inliner took 205.59ms. Allocated memory is still 92.3MB. Free memory was 50.6MB in the beginning and 51.7MB in the end (delta: -1.1MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2022-11-16 11:50:26,792 INFO L158 Benchmark]: Boogie Preprocessor took 169.22ms. Allocated memory is still 92.3MB. Free memory was 51.7MB in the beginning and 41.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:50:26,793 INFO L158 Benchmark]: RCFGBuilder took 4995.03ms. Allocated memory was 92.3MB in the beginning and 239.1MB in the end (delta: 146.8MB). Free memory was 40.6MB in the beginning and 66.1MB in the end (delta: -25.4MB). Peak memory consumption was 136.6MB. Max. memory is 16.1GB. [2022-11-16 11:50:26,793 INFO L158 Benchmark]: TraceAbstraction took 226169.83ms. Allocated memory was 239.1MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 66.1MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 974.1MB. Max. memory is 16.1GB. [2022-11-16 11:50:26,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory was 50.4MB in the beginning and 50.3MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1045.04ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 47.0MB in the beginning and 51.0MB in the end (delta: -4.0MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 205.59ms. Allocated memory is still 92.3MB. Free memory was 50.6MB in the beginning and 51.7MB in the end (delta: -1.1MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 169.22ms. Allocated memory is still 92.3MB. Free memory was 51.7MB in the beginning and 41.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 4995.03ms. Allocated memory was 92.3MB in the beginning and 239.1MB in the end (delta: 146.8MB). Free memory was 40.6MB in the beginning and 66.1MB in the end (delta: -25.4MB). Peak memory consumption was 136.6MB. Max. memory is 16.1GB. * TraceAbstraction took 226169.83ms. Allocated memory was 239.1MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 66.1MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 974.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-16 11:50:26,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2958883e-fece-434e-9ff8-cebbfe1d8a5e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Maybe an infinite loop