./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5d2e3d2da64545cb55955230543ccece093594c714793fa68629cfbe91e63b67 --- 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-4e7fbc6 [2022-11-23 15:26:46,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:26:46,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:26:46,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:26:46,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:26:46,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:26:46,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:26:46,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:26:46,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:26:46,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:26:47,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:26:47,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:26:47,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:26:47,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:26:47,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:26:47,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:26:47,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:26:47,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:26:47,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:26:47,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:26:47,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:26:47,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:26:47,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:26:47,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:26:47,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:26:47,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:26:47,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:26:47,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:26:47,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:26:47,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:26:47,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:26:47,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:26:47,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:26:47,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:26:47,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:26:47,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:26:47,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:26:47,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:26:47,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:26:47,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:26:47,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:26:47,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:26:47,084 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:26:47,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:26:47,084 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:26:47,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:26:47,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:26:47,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:26:47,086 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:26:47,087 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:26:47,087 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:26:47,087 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:26:47,087 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:26:47,088 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:26:47,088 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:26:47,088 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:26:47,088 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:26:47,089 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:26:47,089 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:26:47,089 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:26:47,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:26:47,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:26:47,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:26:47,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:26:47,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:26:47,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:26:47,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:26:47,093 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:26:47,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:26:47,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:26:47,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:26:47,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:26:47,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:26:47,096 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:26:47,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:26:47,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:26:47,097 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:26:47,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:26:47,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:26:47,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:26:47,099 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_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d2e3d2da64545cb55955230543ccece093594c714793fa68629cfbe91e63b67 [2022-11-23 15:26:47,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:26:47,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:26:47,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:26:47,429 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:26:47,430 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:26:47,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2022-11-23 15:26:50,638 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:26:51,095 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:26:51,096 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2022-11-23 15:26:51,109 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/data/e3fdbd8ac/edfaa977327a49b0bcee9d7bda872d53/FLAG9edde937b [2022-11-23 15:26:51,125 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/data/e3fdbd8ac/edfaa977327a49b0bcee9d7bda872d53 [2022-11-23 15:26:51,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:26:51,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:26:51,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:26:51,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:26:51,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:26:51,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:26:51" (1/1) ... [2022-11-23 15:26:51,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f1d777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:51, skipping insertion in model container [2022-11-23 15:26:51,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:26:51" (1/1) ... [2022-11-23 15:26:51,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:26:51,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:26:51,376 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1107,1120] [2022-11-23 15:26:51,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:26:51,565 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:26:51,578 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1107,1120] [2022-11-23 15:26:51,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:26:51,777 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:26:51,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:51 WrapperNode [2022-11-23 15:26:51,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:26:51,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:26:51,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:26:51,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:26:51,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:51" (1/1) ... [2022-11-23 15:26:51,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:51" (1/1) ... [2022-11-23 15:26:51,889 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 742 [2022-11-23 15:26:51,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:26:51,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:26:51,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:26:51,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:26:51,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:51" (1/1) ... [2022-11-23 15:26:51,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:51" (1/1) ... [2022-11-23 15:26:51,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:51" (1/1) ... [2022-11-23 15:26:51,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:51" (1/1) ... [2022-11-23 15:26:51,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:51" (1/1) ... [2022-11-23 15:26:51,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:51" (1/1) ... [2022-11-23 15:26:51,972 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:51" (1/1) ... [2022-11-23 15:26:51,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:51" (1/1) ... [2022-11-23 15:26:51,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:26:51,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:26:51,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:26:52,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:26:52,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:51" (1/1) ... [2022-11-23 15:26:52,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:26:52,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:26:52,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:26:52,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:26:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:26:52,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:26:52,468 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:26:52,471 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:26:56,172 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:26:56,196 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:26:56,196 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:26:56,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:26:56 BoogieIcfgContainer [2022-11-23 15:26:56,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:26:56,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:26:56,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:26:56,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:26:56,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:26:51" (1/3) ... [2022-11-23 15:26:56,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d196abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:26:56, skipping insertion in model container [2022-11-23 15:26:56,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:51" (2/3) ... [2022-11-23 15:26:56,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d196abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:26:56, skipping insertion in model container [2022-11-23 15:26:56,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:26:56" (3/3) ... [2022-11-23 15:26:56,217 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2022-11-23 15:26:56,246 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:26:56,246 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:26:56,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:26:56,315 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=FINITE_AUTOMATA, 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;@4db34a77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:26:56,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:26:56,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:26:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:26:56,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:26:56,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:26:56,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:26:56,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:26:56,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-23 15:26:56,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:26:56,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477918753] [2022-11-23 15:26:56,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:26:56,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:26:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:26:56,754 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:26:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:26:56,889 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:26:56,891 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:26:56,892 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:26:56,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:26:56,900 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:26:56,905 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:26:56,937 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 15:26:56,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:26:56 BoogieIcfgContainer [2022-11-23 15:26:56,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:26:56,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:26:56,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:26:56,960 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:26:56,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:26:56" (3/4) ... [2022-11-23 15:26:56,967 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:26:56,969 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:26:56,972 INFO L158 Benchmark]: Toolchain (without parser) took 5840.67ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 134.3MB in the beginning and 233.9MB in the end (delta: -99.6MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2022-11-23 15:26:56,973 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory was 77.0MB in the beginning and 76.9MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:26:56,974 INFO L158 Benchmark]: CACSL2BoogieTranslator took 646.28ms. Allocated memory is still 167.8MB. Free memory was 133.5MB in the beginning and 107.3MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-23 15:26:56,975 INFO L158 Benchmark]: Boogie Procedure Inliner took 110.72ms. Allocated memory is still 167.8MB. Free memory was 107.3MB in the beginning and 100.1MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 15:26:56,980 INFO L158 Benchmark]: Boogie Preprocessor took 107.68ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 96.1MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:26:56,982 INFO L158 Benchmark]: RCFGBuilder took 4200.53ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 96.1MB in the beginning and 79.9MB in the end (delta: 16.2MB). Peak memory consumption was 120.9MB. Max. memory is 16.1GB. [2022-11-23 15:26:56,984 INFO L158 Benchmark]: TraceAbstraction took 756.24ms. Allocated memory was 243.3MB in the beginning and 293.6MB in the end (delta: 50.3MB). Free memory was 78.8MB in the beginning and 233.9MB in the end (delta: -155.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:26:56,984 INFO L158 Benchmark]: Witness Printer took 10.26ms. Allocated memory is still 293.6MB. Free memory was 233.9MB in the beginning and 233.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:26:56,988 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory was 77.0MB in the beginning and 76.9MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 646.28ms. Allocated memory is still 167.8MB. Free memory was 133.5MB in the beginning and 107.3MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 110.72ms. Allocated memory is still 167.8MB. Free memory was 107.3MB in the beginning and 100.1MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 107.68ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 96.1MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 4200.53ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 96.1MB in the beginning and 79.9MB in the end (delta: 16.2MB). Peak memory consumption was 120.9MB. Max. memory is 16.1GB. * TraceAbstraction took 756.24ms. Allocated memory was 243.3MB in the beginning and 293.6MB in the end (delta: 50.3MB). Free memory was 78.8MB in the beginning and 233.9MB in the end (delta: -155.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 10.26ms. Allocated memory is still 293.6MB. Free memory was 233.9MB in the beginning and 233.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 218, overapproximation of bitwiseOr at line 221, overapproximation of bitwiseAnd at line 197. 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_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 8); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (8 - 1); [L34] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L35] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L37] const SORT_45 mask_SORT_45 = (SORT_45)-1 >> (sizeof(SORT_45) * 8 - 6); [L38] const SORT_45 msb_SORT_45 = (SORT_45)1 << (6 - 1); [L40] const SORT_55 mask_SORT_55 = (SORT_55)-1 >> (sizeof(SORT_55) * 8 - 32); [L41] const SORT_55 msb_SORT_55 = (SORT_55)1 << (32 - 1); [L43] const SORT_61 mask_SORT_61 = (SORT_61)-1 >> (sizeof(SORT_61) * 8 - 25); [L44] const SORT_61 msb_SORT_61 = (SORT_61)1 << (25 - 1); [L46] const SORT_63 mask_SORT_63 = (SORT_63)-1 >> (sizeof(SORT_63) * 8 - 7); [L47] const SORT_63 msb_SORT_63 = (SORT_63)1 << (7 - 1); [L49] const SORT_84 mask_SORT_84 = (SORT_84)-1 >> (sizeof(SORT_84) * 8 - 2); [L50] const SORT_84 msb_SORT_84 = (SORT_84)1 << (2 - 1); [L52] const SORT_122 mask_SORT_122 = (SORT_122)-1 >> (sizeof(SORT_122) * 8 - 3); [L53] const SORT_122 msb_SORT_122 = (SORT_122)1 << (3 - 1); [L55] const SORT_1 var_17 = 0; [L56] const SORT_1 var_41 = 1; [L57] const SORT_45 var_46 = 0; [L58] const SORT_5 var_50 = 0; [L59] const SORT_5 var_56 = 2; [L60] const SORT_55 var_58 = 2; [L61] const SORT_61 var_62 = 0; [L62] const SORT_55 var_66 = 1; [L63] const SORT_55 var_112 = 0; [L64] const SORT_45 var_218 = 33; [L65] const SORT_5 var_227 = 1; [L67] SORT_1 input_2; [L68] SORT_3 input_4; [L69] SORT_5 input_6; [L70] SORT_7 input_8; [L71] SORT_1 input_9; [L72] SORT_1 input_10; [L73] SORT_1 input_11; [L74] SORT_1 input_12; [L75] SORT_7 input_13; [L76] SORT_1 input_14; [L77] SORT_1 input_15; [L78] SORT_1 input_16; [L79] SORT_84 input_85; [L80] SORT_1 input_87; [L81] SORT_1 input_89; [L82] SORT_1 input_91; [L83] SORT_1 input_99; [L84] SORT_1 input_105; [L85] SORT_1 input_134; [L86] SORT_1 input_149; [L87] SORT_7 input_162; [L88] SORT_1 input_164; [L89] SORT_3 input_166; [L90] SORT_5 input_168; [L91] SORT_1 input_179; [L93] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_45 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_45; [L101] SORT_5 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L102] SORT_1 state_70 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_76 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_80 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] SORT_1 state_82 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] SORT_1 state_93 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_1 state_95 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] SORT_1 state_97 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] SORT_1 state_101 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] SORT_1 state_103 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] SORT_1 state_107 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] SORT_1 state_136 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L113] SORT_1 state_138 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L114] SORT_1 state_140 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_1 state_142 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_1 state_144 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] SORT_1 state_151 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] SORT_1 state_153 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L119] SORT_1 state_170 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L120] SORT_1 state_172 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L121] SORT_1 state_181 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L122] SORT_1 state_183 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] SORT_1 state_185 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L125] SORT_1 init_19_arg_1 = var_17; [L126] state_18 = init_19_arg_1 [L127] SORT_1 init_22_arg_1 = var_17; [L128] state_21 = init_22_arg_1 [L129] SORT_1 init_24_arg_1 = var_17; [L130] state_23 = init_24_arg_1 [L131] SORT_1 init_27_arg_1 = var_17; [L132] state_26 = init_27_arg_1 [L133] SORT_1 init_30_arg_1 = var_17; [L134] state_29 = init_30_arg_1 [L135] SORT_1 init_33_arg_1 = var_17; [L136] state_32 = init_33_arg_1 [L137] SORT_1 init_36_arg_1 = var_17; [L138] state_35 = init_36_arg_1 [L139] SORT_45 init_48_arg_1 = var_46; [L140] state_47 = init_48_arg_1 [L141] SORT_5 init_52_arg_1 = var_50; [L142] state_51 = init_52_arg_1 [L143] SORT_1 init_71_arg_1 = var_17; [L144] state_70 = init_71_arg_1 [L145] SORT_1 init_77_arg_1 = var_17; [L146] state_76 = init_77_arg_1 [L147] SORT_1 init_81_arg_1 = var_17; [L148] state_80 = init_81_arg_1 [L149] SORT_1 init_83_arg_1 = var_17; [L150] state_82 = init_83_arg_1 [L151] SORT_1 init_94_arg_1 = var_17; [L152] state_93 = init_94_arg_1 [L153] SORT_1 init_96_arg_1 = var_17; [L154] state_95 = init_96_arg_1 [L155] SORT_1 init_98_arg_1 = var_17; [L156] state_97 = init_98_arg_1 [L157] SORT_1 init_102_arg_1 = var_17; [L158] state_101 = init_102_arg_1 [L159] SORT_1 init_104_arg_1 = var_17; [L160] state_103 = init_104_arg_1 [L161] SORT_1 init_108_arg_1 = var_17; [L162] state_107 = init_108_arg_1 [L163] SORT_1 init_137_arg_1 = var_17; [L164] state_136 = init_137_arg_1 [L165] SORT_1 init_139_arg_1 = var_17; [L166] state_138 = init_139_arg_1 [L167] SORT_1 init_141_arg_1 = var_17; [L168] state_140 = init_141_arg_1 [L169] SORT_1 init_143_arg_1 = var_17; [L170] state_142 = init_143_arg_1 [L171] SORT_1 init_145_arg_1 = var_17; [L172] state_144 = init_145_arg_1 [L173] SORT_1 init_152_arg_1 = var_17; [L174] state_151 = init_152_arg_1 [L175] SORT_1 init_154_arg_1 = var_17; [L176] state_153 = init_154_arg_1 [L177] SORT_1 init_171_arg_1 = var_17; [L178] state_170 = init_171_arg_1 [L179] SORT_1 init_173_arg_1 = var_17; [L180] state_172 = init_173_arg_1 [L181] SORT_1 init_182_arg_1 = var_17; [L182] state_181 = init_182_arg_1 [L183] SORT_1 init_184_arg_1 = var_17; [L184] state_183 = init_184_arg_1 [L185] SORT_1 init_186_arg_1 = var_17; [L186] state_185 = init_186_arg_1 VAL [init_102_arg_1=0, init_104_arg_1=0, init_108_arg_1=0, init_137_arg_1=0, init_139_arg_1=0, init_141_arg_1=0, init_143_arg_1=0, init_145_arg_1=0, init_152_arg_1=0, init_154_arg_1=0, init_171_arg_1=0, init_173_arg_1=0, init_182_arg_1=0, init_184_arg_1=0, init_186_arg_1=0, init_19_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_27_arg_1=0, init_30_arg_1=0, init_33_arg_1=0, init_36_arg_1=0, init_48_arg_1=0, init_52_arg_1=0, init_71_arg_1=0, init_77_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_94_arg_1=0, init_96_arg_1=0, init_98_arg_1=0, mask_SORT_1=1, mask_SORT_122=7, mask_SORT_3=65535, mask_SORT_45=63, mask_SORT_5=255, mask_SORT_55=4294967295, mask_SORT_61=4294967295, mask_SORT_63=127, mask_SORT_7=31, mask_SORT_84=3, msb_SORT_1=1, msb_SORT_122=4, msb_SORT_3=32768, msb_SORT_45=32, msb_SORT_5=128, msb_SORT_55=2147483648, msb_SORT_61=16777216, msb_SORT_63=64, msb_SORT_7=16, msb_SORT_84=2, state_101=0, state_103=0, state_107=0, state_136=0, state_138=0, state_140=0, state_142=0, state_144=0, state_151=0, state_153=0, state_170=0, state_172=0, state_18=0, state_181=0, state_183=0, state_185=0, state_21=0, state_23=0, state_26=0, state_29=0, state_32=0, state_35=0, state_47=0, state_51=0, state_70=0, state_76=0, state_80=0, state_82=0, state_93=0, state_95=0, state_97=0, var_112=0, var_17=0, var_218=33, var_227=1, var_41=1, var_46=0, var_50=0, var_56=2, var_58=2, var_62=0, var_66=1] [L189] input_2 = __VERIFIER_nondet_uchar() [L190] input_4 = __VERIFIER_nondet_ushort() [L191] input_6 = __VERIFIER_nondet_uchar() [L192] input_8 = __VERIFIER_nondet_uchar() [L193] input_9 = __VERIFIER_nondet_uchar() [L194] input_10 = __VERIFIER_nondet_uchar() [L195] input_11 = __VERIFIER_nondet_uchar() [L196] input_12 = __VERIFIER_nondet_uchar() [L197] input_12 = input_12 & mask_SORT_1 [L198] input_13 = __VERIFIER_nondet_uchar() [L199] input_14 = __VERIFIER_nondet_uchar() [L200] input_15 = __VERIFIER_nondet_uchar() [L201] input_16 = __VERIFIER_nondet_uchar() [L202] input_85 = __VERIFIER_nondet_uchar() [L203] input_87 = __VERIFIER_nondet_uchar() [L204] input_89 = __VERIFIER_nondet_uchar() [L205] input_91 = __VERIFIER_nondet_uchar() [L206] input_99 = __VERIFIER_nondet_uchar() [L207] input_105 = __VERIFIER_nondet_uchar() [L208] input_134 = __VERIFIER_nondet_uchar() [L209] input_149 = __VERIFIER_nondet_uchar() [L210] input_162 = __VERIFIER_nondet_uchar() [L211] input_164 = __VERIFIER_nondet_uchar() [L212] input_166 = __VERIFIER_nondet_ushort() [L213] input_168 = __VERIFIER_nondet_uchar() [L214] input_179 = __VERIFIER_nondet_uchar() [L217] SORT_1 var_20_arg_0 = state_18; [L218] SORT_1 var_20 = ~var_20_arg_0; [L219] SORT_1 var_25_arg_0 = state_21; [L220] SORT_1 var_25_arg_1 = state_23; [L221] SORT_1 var_25 = var_25_arg_0 | var_25_arg_1; [L222] SORT_1 var_28_arg_0 = var_25; [L223] SORT_1 var_28_arg_1 = state_26; [L224] SORT_1 var_28 = var_28_arg_0 | var_28_arg_1; [L225] SORT_1 var_31_arg_0 = var_28; [L226] SORT_1 var_31_arg_1 = state_29; [L227] SORT_1 var_31 = var_31_arg_0 | var_31_arg_1; [L228] SORT_1 var_34_arg_0 = var_31; [L229] SORT_1 var_34_arg_1 = state_32; [L230] SORT_1 var_34 = var_34_arg_0 | var_34_arg_1; [L231] SORT_1 var_37_arg_0 = var_34; [L232] SORT_1 var_37_arg_1 = state_35; [L233] SORT_1 var_37 = var_37_arg_0 | var_37_arg_1; [L234] SORT_1 var_38_arg_0 = var_20; [L235] SORT_1 var_38_arg_1 = var_37; [L236] SORT_1 var_38 = var_38_arg_0 | var_38_arg_1; [L237] SORT_1 var_42_arg_0 = var_38; [L238] SORT_1 var_42 = ~var_42_arg_0; [L239] SORT_1 var_43_arg_0 = var_41; [L240] SORT_1 var_43_arg_1 = var_42; [L241] SORT_1 var_43 = var_43_arg_0 & var_43_arg_1; [L242] var_43 = var_43 & mask_SORT_1 [L243] SORT_1 bad_44_arg_0 = var_43; [L244] CALL __VERIFIER_assert(!(bad_44_arg_0)) [L20] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L20] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2022-11-23 15:26:57,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5d2e3d2da64545cb55955230543ccece093594c714793fa68629cfbe91e63b67 --- 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-4e7fbc6 [2022-11-23 15:26:59,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:26:59,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:26:59,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:26:59,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:26:59,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:26:59,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:26:59,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:26:59,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:26:59,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:26:59,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:26:59,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:26:59,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:26:59,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:26:59,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:26:59,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:26:59,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:26:59,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:26:59,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:26:59,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:26:59,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:26:59,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:26:59,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:26:59,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:26:59,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:26:59,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:26:59,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:26:59,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:26:59,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:26:59,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:26:59,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:26:59,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:26:59,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:26:59,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:26:59,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:26:59,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:26:59,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:26:59,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:26:59,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:26:59,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:26:59,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:26:59,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 15:26:59,679 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:26:59,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:26:59,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:26:59,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:26:59,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:26:59,683 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:26:59,683 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:26:59,684 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:26:59,684 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:26:59,684 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:26:59,685 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:26:59,686 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:26:59,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:26:59,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:26:59,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:26:59,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:26:59,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:26:59,688 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:26:59,688 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:26:59,688 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:26:59,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:26:59,689 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:26:59,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:26:59,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:26:59,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:26:59,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:26:59,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:26:59,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:26:59,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:26:59,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:26:59,691 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:26:59,691 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:26:59,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:26:59,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:26:59,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:26:59,692 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_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d2e3d2da64545cb55955230543ccece093594c714793fa68629cfbe91e63b67 [2022-11-23 15:27:00,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:27:00,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:27:00,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:27:00,154 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:27:00,154 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:27:00,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2022-11-23 15:27:03,328 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:27:03,594 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:27:03,595 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2022-11-23 15:27:03,607 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/data/199b7b8f6/cc437bff352644379cf8e832b880591b/FLAG626517de5 [2022-11-23 15:27:03,624 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/data/199b7b8f6/cc437bff352644379cf8e832b880591b [2022-11-23 15:27:03,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:27:03,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:27:03,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:27:03,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:27:03,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:27:03,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:27:03" (1/1) ... [2022-11-23 15:27:03,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f49eec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:03, skipping insertion in model container [2022-11-23 15:27:03,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:27:03" (1/1) ... [2022-11-23 15:27:03,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:27:03,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:27:03,849 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1107,1120] [2022-11-23 15:27:04,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:27:04,138 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:27:04,151 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1107,1120] [2022-11-23 15:27:04,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:27:04,338 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:27:04,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:04 WrapperNode [2022-11-23 15:27:04,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:27:04,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:27:04,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:27:04,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:27:04,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:04" (1/1) ... [2022-11-23 15:27:04,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:04" (1/1) ... [2022-11-23 15:27:04,467 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 742 [2022-11-23 15:27:04,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:27:04,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:27:04,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:27:04,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:27:04,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:04" (1/1) ... [2022-11-23 15:27:04,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:04" (1/1) ... [2022-11-23 15:27:04,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:04" (1/1) ... [2022-11-23 15:27:04,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:04" (1/1) ... [2022-11-23 15:27:04,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:04" (1/1) ... [2022-11-23 15:27:04,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:04" (1/1) ... [2022-11-23 15:27:04,550 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:04" (1/1) ... [2022-11-23 15:27:04,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:04" (1/1) ... [2022-11-23 15:27:04,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:27:04,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:27:04,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:27:04,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:27:04,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:04" (1/1) ... [2022-11-23 15:27:04,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:27:04,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:27:04,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:27:04,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:27:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:27:04,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:27:04,977 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:27:04,979 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:27:06,010 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:27:06,022 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:27:06,022 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:27:06,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:27:06 BoogieIcfgContainer [2022-11-23 15:27:06,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:27:06,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:27:06,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:27:06,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:27:06,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:27:03" (1/3) ... [2022-11-23 15:27:06,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652be12f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:27:06, skipping insertion in model container [2022-11-23 15:27:06,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:27:04" (2/3) ... [2022-11-23 15:27:06,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652be12f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:27:06, skipping insertion in model container [2022-11-23 15:27:06,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:27:06" (3/3) ... [2022-11-23 15:27:06,039 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2022-11-23 15:27:06,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:27:06,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:27:06,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:27:06,113 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=FINITE_AUTOMATA, 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;@7a5c85e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:27:06,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:27:06,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:06,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:27:06,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:27:06,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:27:06,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:27:06,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:27:06,135 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 15:27:06,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:27:06,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930867304] [2022-11-23 15:27:06,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:27:06,155 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 [2022-11-23 15:27:06,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:27:06,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:27:06,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:27:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:27:06,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 15:27:06,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:27:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:06,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:27:06,648 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:27:06,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930867304] [2022-11-23 15:27:06,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930867304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:27:06,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:27:06,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:27:06,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317291630] [2022-11-23 15:27:06,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:27:06,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:27:06,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:27:06,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:27:06,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:27:06,694 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:06,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:27:06,861 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 15:27:06,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:27:06,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 15:27:06,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:27:06,873 INFO L225 Difference]: With dead ends: 20 [2022-11-23 15:27:06,873 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 15:27:06,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:27:06,879 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:27:06,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:27:06,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 15:27:06,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 15:27:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:06,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 15:27:06,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 15:27:06,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:27:06,919 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 15:27:06,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:06,920 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 15:27:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:27:06,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:27:06,920 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 15:27:06,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:27:07,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:27:07,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:27:07,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:27:07,123 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 15:27:07,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:27:07,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168348903] [2022-11-23 15:27:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:27:07,126 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 [2022-11-23 15:27:07,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:27:07,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:27:07,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:27:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:27:07,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-23 15:27:07,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:27:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:07,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:27:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:07,973 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:27:07,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168348903] [2022-11-23 15:27:07,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168348903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:27:07,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1639923099] [2022-11-23 15:27:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:27:07,974 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:27:07,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:27:07,982 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:27:07,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-23 15:27:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:27:08,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-23 15:27:08,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:27:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:08,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:27:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:09,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1639923099] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:27:09,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528062914] [2022-11-23 15:27:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:27:09,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:27:09,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:27:09,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:27:09,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:27:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:27:09,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 15:27:09,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:27:09,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:09,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:27:09,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:09,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528062914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:27:09,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:27:09,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-23 15:27:09,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082466748] [2022-11-23 15:27:09,768 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:27:09,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 15:27:09,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:27:09,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 15:27:09,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:27:09,771 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:10,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:27:10,017 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-23 15:27:10,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:27:10,018 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 15:27:10,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:27:10,018 INFO L225 Difference]: With dead ends: 16 [2022-11-23 15:27:10,018 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 15:27:10,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-23 15:27:10,020 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:27:10,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 22 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:27:10,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 15:27:10,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-23 15:27:10,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-23 15:27:10,025 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-23 15:27:10,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:27:10,026 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-23 15:27:10,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:10,026 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-23 15:27:10,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:27:10,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:27:10,027 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 15:27:10,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 15:27:10,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:27:10,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:27:10,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:27:10,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:27:10,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:27:10,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-23 15:27:10,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:27:10,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367328462] [2022-11-23 15:27:10,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:27:10,644 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 [2022-11-23 15:27:10,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:27:10,645 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:27:10,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:27:11,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:27:11,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:27:11,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 15:27:11,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:27:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:11,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:27:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:11,639 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:27:11,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367328462] [2022-11-23 15:27:11,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367328462] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:27:11,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [572993146] [2022-11-23 15:27:11,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:27:11,641 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:27:11,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:27:11,642 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:27:11,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-23 15:27:12,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:27:12,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:27:12,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 15:27:12,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:27:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:12,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:27:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:13,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [572993146] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:27:13,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062983844] [2022-11-23 15:27:13,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:27:13,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:27:13,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:27:13,086 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:27:13,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:27:13,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:27:13,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:27:13,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 15:27:13,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:27:13,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:13,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:27:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:13,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062983844] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:27:13,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:27:13,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 12 [2022-11-23 15:27:13,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328895644] [2022-11-23 15:27:13,933 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:27:13,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 15:27:13,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:27:13,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 15:27:13,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:27:13,937 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:14,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:27:14,254 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-23 15:27:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:27:14,256 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 15:27:14,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:27:14,256 INFO L225 Difference]: With dead ends: 19 [2022-11-23 15:27:14,256 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 15:27:14,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:27:14,258 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:27:14,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:27:14,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 15:27:14,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-23 15:27:14,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-23 15:27:14,267 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-23 15:27:14,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:27:14,267 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-23 15:27:14,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:14,268 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-23 15:27:14,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 15:27:14,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:27:14,269 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-23 15:27:14,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:27:14,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:27:14,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 15:27:14,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:27:14,870 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:27:14,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:27:14,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-23 15:27:14,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:27:14,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906388138] [2022-11-23 15:27:14,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:27:14,874 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 [2022-11-23 15:27:14,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:27:14,875 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:27:14,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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 (9)] Waiting until timeout for monitored process [2022-11-23 15:27:15,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 15:27:15,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:27:15,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-23 15:27:15,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:27:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:15,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:27:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:16,565 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:27:16,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906388138] [2022-11-23 15:27:16,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906388138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:27:16,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1303018527] [2022-11-23 15:27:16,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:27:16,566 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:27:16,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:27:16,567 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:27:16,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-23 15:27:18,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 15:27:18,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:27:18,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-23 15:27:18,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:27:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:18,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:27:19,372 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:19,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1303018527] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:27:19,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451332094] [2022-11-23 15:27:19,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:27:19,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:27:19,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:27:19,375 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:27:19,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 15:27:20,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 15:27:20,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:27:20,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-23 15:27:20,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:27:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:20,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:27:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:21,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451332094] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:27:21,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:27:21,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 15 [2022-11-23 15:27:21,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134405613] [2022-11-23 15:27:21,179 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:27:21,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 15:27:21,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:27:21,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 15:27:21,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-23 15:27:21,181 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:27:21,750 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-23 15:27:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:27:21,751 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 15:27:21,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:27:21,752 INFO L225 Difference]: With dead ends: 22 [2022-11-23 15:27:21,752 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 15:27:21,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2022-11-23 15:27:21,754 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 25 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:27:21,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 37 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:27:21,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 15:27:21,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-23 15:27:21,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-23 15:27:21,764 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-23 15:27:21,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:27:21,764 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-23 15:27:21,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:27:21,765 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-23 15:27:21,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:27:21,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:27:21,766 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-23 15:27:21,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-23 15:27:21,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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 (9)] Forceful destruction successful, exit code 0 [2022-11-23 15:27:22,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 15:27:22,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:27:22,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:27:22,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:27:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-11-23 15:27:22,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:27:22,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145573899] [2022-11-23 15:27:22,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:27:22,381 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 [2022-11-23 15:27:22,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:27:22,383 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:27:22,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:27:23,287 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:27:23,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:27:23,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 160 conjunts are in the unsatisfiable core [2022-11-23 15:27:23,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:27:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:27:25,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:28:43,665 WARN L233 SmtUtils]: Spent 1.20m on a formula simplification. DAG size of input: 612 DAG size of output: 377 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:28:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:52,920 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:28:52,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145573899] [2022-11-23 15:28:52,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145573899] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:28:52,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [453867639] [2022-11-23 15:28:52,920 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:28:52,921 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:28:52,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:28:52,924 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:28:52,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-23 15:28:54,643 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:28:54,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:28:54,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 142 conjunts are in the unsatisfiable core [2022-11-23 15:28:54,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:28:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:28:55,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:29:59,531 WARN L233 SmtUtils]: Spent 43.62s on a formula simplification. DAG size of input: 510 DAG size of output: 274 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:29:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:59,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [453867639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:29:59,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002189883] [2022-11-23 15:29:59,641 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:29:59,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:29:59,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:29:59,645 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:29:59,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 15:30:00,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:30:00,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:30:00,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 136 conjunts are in the unsatisfiable core [2022-11-23 15:30:00,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:30:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:30:01,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:31:16,627 WARN L233 SmtUtils]: Spent 1.01m on a formula simplification. DAG size of input: 444 DAG size of output: 186 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:31:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:31:21,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002189883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:31:21,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:31:21,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8, 8, 9, 9] total 24 [2022-11-23 15:31:21,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712604735] [2022-11-23 15:31:21,030 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:31:21,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 15:31:21,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:31:21,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 15:31:21,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=454, Unknown=17, NotChecked=0, Total=552 [2022-11-23 15:31:21,032 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:31:22,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:31:22,387 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-11-23 15:31:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 15:31:22,389 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 15:31:22,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:31:22,389 INFO L225 Difference]: With dead ends: 25 [2022-11-23 15:31:22,389 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 15:31:22,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 224.0s TimeCoverageRelationStatistics Valid=174, Invalid=679, Unknown=17, NotChecked=0, Total=870 [2022-11-23 15:31:22,391 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:31:22,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 40 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 15:31:22,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 15:31:22,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-11-23 15:31:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:31:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-23 15:31:22,397 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2022-11-23 15:31:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:31:22,398 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-23 15:31:22,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:31:22,398 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-23 15:31:22,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 15:31:22,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:31:22,399 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1] [2022-11-23 15:31:22,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-23 15:31:22,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-23 15:31:22,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:31:23,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:31:23,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:31:23,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:31:23,011 INFO L85 PathProgramCache]: Analyzing trace with hash -826954269, now seen corresponding path program 5 times [2022-11-23 15:31:23,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:31:23,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921620830] [2022-11-23 15:31:23,013 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 15:31:23,013 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 [2022-11-23 15:31:23,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:31:23,015 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:31:23,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/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)] Waiting until timeout for monitored process [2022-11-23 15:31:24,053 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-23 15:31:24,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:31:24,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 291 conjunts are in the unsatisfiable core [2022-11-23 15:31:24,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:31:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:31:29,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:34:23,844 WARN L233 SmtUtils]: Spent 2.73m on a formula simplification. DAG size of input: 606 DAG size of output: 297 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:34:40,961 WARN L233 SmtUtils]: Spent 12.72s on a formula simplification. DAG size of input: 296 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:37:13,306 WARN L233 SmtUtils]: Spent 1.79m on a formula simplification. DAG size of input: 1162 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:37:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:37:18,909 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:37:18,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921620830] [2022-11-23 15:37:18,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921620830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:37:18,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1578588461] [2022-11-23 15:37:18,912 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 15:37:18,912 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:37:18,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:37:18,917 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:37:18,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07662cbc-906b-43dc-bde1-e917a513b839/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-23 15:37:21,208 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-23 15:37:21,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:37:21,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 265 conjunts are in the unsatisfiable core [2022-11-23 15:37:21,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:37:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:37:24,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:39:28,688 WARN L233 SmtUtils]: Spent 1.66m on a formula simplification. DAG size of input: 497 DAG size of output: 190 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)