./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mpeg.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mpeg.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0 --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 b6304bbe462b12fec4277ffb860d5f110fe5dc3d9c9a5595a3a99ec48e2713d6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 20:03:48,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:03:48,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:03:48,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:03:48,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:03:48,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:03:48,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:03:48,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:03:48,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:03:48,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:03:48,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:03:48,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:03:48,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:03:48,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:03:48,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:03:48,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:03:48,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:03:48,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:03:48,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:03:48,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:03:48,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:03:48,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:03:48,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:03:48,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:03:48,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:03:48,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:03:48,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:03:48,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:03:48,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:03:48,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:03:48,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:03:48,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:03:48,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:03:48,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:03:48,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:03:48,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:03:48,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:03:48,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:03:48,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:03:48,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:03:48,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:03:48,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 20:03:48,277 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:03:48,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:03:48,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:03:48,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:03:48,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:03:48,278 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:03:48,279 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:03:48,279 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:03:48,279 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:03:48,279 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:03:48,279 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:03:48,279 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:03:48,280 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:03:48,280 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:03:48,280 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:03:48,280 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:03:48,280 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:03:48,281 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:03:48,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:03:48,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:03:48,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:03:48,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:03:48,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:03:48,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:03:48,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:03:48,282 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:03:48,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:03:48,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:03:48,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:03:48,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:03:48,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:03:48,284 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:03:48,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:03:48,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:03:48,284 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:03:48,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:03:48,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:03:48,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:03:48,285 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_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6304bbe462b12fec4277ffb860d5f110fe5dc3d9c9a5595a3a99ec48e2713d6 [2022-11-16 20:03:48,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:03:48,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:03:48,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:03:48,641 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:03:48,642 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:03:48,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mpeg.c [2022-11-16 20:03:48,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/data/2cd8df0fc/f788902943d6448c8711dac41d2d06d0/FLAG4acf1c61d [2022-11-16 20:03:49,369 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:03:49,370 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mpeg.c [2022-11-16 20:03:49,390 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/data/2cd8df0fc/f788902943d6448c8711dac41d2d06d0/FLAG4acf1c61d [2022-11-16 20:03:49,541 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/data/2cd8df0fc/f788902943d6448c8711dac41d2d06d0 [2022-11-16 20:03:49,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:03:49,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:03:49,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:03:49,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:03:49,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:03:49,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:03:49" (1/1) ... [2022-11-16 20:03:49,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd4cf3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:49, skipping insertion in model container [2022-11-16 20:03:49,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:03:49" (1/1) ... [2022-11-16 20:03:49,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:03:49,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:03:49,926 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mpeg.c[1107,1120] [2022-11-16 20:03:50,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:03:50,460 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:03:50,471 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mpeg.c[1107,1120] [2022-11-16 20:03:50,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:03:50,730 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:03:50,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:50 WrapperNode [2022-11-16 20:03:50,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:03:50,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:03:50,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:03:50,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:03:50,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:50" (1/1) ... [2022-11-16 20:03:50,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:50" (1/1) ... [2022-11-16 20:03:51,008 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4100 [2022-11-16 20:03:51,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:03:51,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:03:51,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:03:51,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:03:51,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:50" (1/1) ... [2022-11-16 20:03:51,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:50" (1/1) ... [2022-11-16 20:03:51,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:50" (1/1) ... [2022-11-16 20:03:51,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:50" (1/1) ... [2022-11-16 20:03:51,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:50" (1/1) ... [2022-11-16 20:03:51,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:50" (1/1) ... [2022-11-16 20:03:51,171 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:50" (1/1) ... [2022-11-16 20:03:51,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:50" (1/1) ... [2022-11-16 20:03:51,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:03:51,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:03:51,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:03:51,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:03:51,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:50" (1/1) ... [2022-11-16 20:03:51,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:03:51,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:03:51,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:03:51,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:03:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:03:51,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:03:52,004 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:03:52,006 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:03:54,173 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:04:00,545 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:04:00,545 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:04:00,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:04:00 BoogieIcfgContainer [2022-11-16 20:04:00,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:04:00,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:04:00,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:04:00,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:04:00,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:03:49" (1/3) ... [2022-11-16 20:04:00,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adbc02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:04:00, skipping insertion in model container [2022-11-16 20:04:00,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:50" (2/3) ... [2022-11-16 20:04:00,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adbc02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:04:00, skipping insertion in model container [2022-11-16 20:04:00,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:04:00" (3/3) ... [2022-11-16 20:04:00,557 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mpeg.c [2022-11-16 20:04:00,575 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:04:00,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:04:00,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:04:00,627 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;@e9125f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:04:00,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:04:00,632 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) [2022-11-16 20:04:00,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 20:04:00,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:04:00,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 20:04:00,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:04:00,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:04:00,644 INFO L85 PathProgramCache]: Analyzing trace with hash 49984525, now seen corresponding path program 1 times [2022-11-16 20:04:00,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:04:00,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687516273] [2022-11-16 20:04:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:04:00,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:04:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:04:01,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 20:04:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:04:01,184 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 20:04:01,186 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 20:04:01,187 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 20:04:01,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:04:01,194 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 20:04:01,198 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 20:04:01,274 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-16 20:04:01,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:04:01 BoogieIcfgContainer [2022-11-16 20:04:01,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 20:04:01,305 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 20:04:01,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 20:04:01,305 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 20:04:01,306 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:04:00" (3/4) ... [2022-11-16 20:04:01,309 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 20:04:01,309 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 20:04:01,309 INFO L158 Benchmark]: Toolchain (without parser) took 11763.67ms. Allocated memory was 127.9MB in the beginning and 868.2MB in the end (delta: 740.3MB). Free memory was 83.8MB in the beginning and 475.5MB in the end (delta: -391.7MB). Peak memory consumption was 348.0MB. Max. memory is 16.1GB. [2022-11-16 20:04:01,310 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 127.9MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:04:01,310 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1179.28ms. Allocated memory is still 127.9MB. Free memory was 83.5MB in the beginning and 76.9MB in the end (delta: 6.6MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. [2022-11-16 20:04:01,311 INFO L158 Benchmark]: Boogie Procedure Inliner took 276.45ms. Allocated memory was 127.9MB in the beginning and 182.5MB in the end (delta: 54.5MB). Free memory was 76.9MB in the beginning and 121.5MB in the end (delta: -44.6MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2022-11-16 20:04:01,312 INFO L158 Benchmark]: Boogie Preprocessor took 197.31ms. Allocated memory is still 182.5MB. Free memory was 121.5MB in the beginning and 106.1MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 20:04:01,312 INFO L158 Benchmark]: RCFGBuilder took 9341.23ms. Allocated memory was 182.5MB in the beginning and 868.2MB in the end (delta: 685.8MB). Free memory was 106.1MB in the beginning and 538.4MB in the end (delta: -432.3MB). Peak memory consumption was 559.0MB. Max. memory is 16.1GB. [2022-11-16 20:04:01,313 INFO L158 Benchmark]: TraceAbstraction took 754.45ms. Allocated memory is still 868.2MB. Free memory was 537.3MB in the beginning and 475.5MB in the end (delta: 61.9MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2022-11-16 20:04:01,313 INFO L158 Benchmark]: Witness Printer took 3.66ms. Allocated memory is still 868.2MB. Free memory is still 475.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:04:01,317 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 127.9MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1179.28ms. Allocated memory is still 127.9MB. Free memory was 83.5MB in the beginning and 76.9MB in the end (delta: 6.6MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 276.45ms. Allocated memory was 127.9MB in the beginning and 182.5MB in the end (delta: 54.5MB). Free memory was 76.9MB in the beginning and 121.5MB in the end (delta: -44.6MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 197.31ms. Allocated memory is still 182.5MB. Free memory was 121.5MB in the beginning and 106.1MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * RCFGBuilder took 9341.23ms. Allocated memory was 182.5MB in the beginning and 868.2MB in the end (delta: 685.8MB). Free memory was 106.1MB in the beginning and 538.4MB in the end (delta: -432.3MB). Peak memory consumption was 559.0MB. Max. memory is 16.1GB. * TraceAbstraction took 754.45ms. Allocated memory is still 868.2MB. Free memory was 537.3MB in the beginning and 475.5MB in the end (delta: 61.9MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * Witness Printer took 3.66ms. Allocated memory is still 868.2MB. Free memory is still 475.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 513, overapproximation of bitwiseAnd at line 368. 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_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 32); [L29] const SORT_7 msb_SORT_7 = (SORT_7)1 << (32 - 1); [L31] const SORT_23 mask_SORT_23 = (SORT_23)-1 >> (sizeof(SORT_23) * 8 - 8); [L32] const SORT_23 msb_SORT_23 = (SORT_23)1 << (8 - 1); [L34] const SORT_27 mask_SORT_27 = (SORT_27)-1 >> (sizeof(SORT_27) * 8 - 7); [L35] const SORT_27 msb_SORT_27 = (SORT_27)1 << (7 - 1); [L37] const SORT_32 mask_SORT_32 = (SORT_32)-1 >> (sizeof(SORT_32) * 8 - 3); [L38] const SORT_32 msb_SORT_32 = (SORT_32)1 << (3 - 1); [L40] const SORT_40 mask_SORT_40 = (SORT_40)-1 >> (sizeof(SORT_40) * 8 - 24); [L41] const SORT_40 msb_SORT_40 = (SORT_40)1 << (24 - 1); [L43] const SORT_43 mask_SORT_43 = (SORT_43)-1 >> (sizeof(SORT_43) * 8 - 40); [L44] const SORT_43 msb_SORT_43 = (SORT_43)1 << (40 - 1); [L46] const SORT_70 mask_SORT_70 = (SORT_70)-1 >> (sizeof(SORT_70) * 8 - 2); [L47] const SORT_70 msb_SORT_70 = (SORT_70)1 << (2 - 1); [L49] const SORT_76 mask_SORT_76 = (SORT_76)-1 >> (sizeof(SORT_76) * 8 - 16); [L50] const SORT_76 msb_SORT_76 = (SORT_76)1 << (16 - 1); [L52] const SORT_100 mask_SORT_100 = (SORT_100)-1 >> (sizeof(SORT_100) * 8 - 13); [L53] const SORT_100 msb_SORT_100 = (SORT_100)1 << (13 - 1); [L55] const SORT_111 mask_SORT_111 = (SORT_111)-1 >> (sizeof(SORT_111) * 8 - 33); [L56] const SORT_111 msb_SORT_111 = (SORT_111)1 << (33 - 1); [L58] const SORT_118 mask_SORT_118 = (SORT_118)-1 >> (sizeof(SORT_118) * 8 - 4); [L59] const SORT_118 msb_SORT_118 = (SORT_118)1 << (4 - 1); [L61] const SORT_1 var_4 = 0; [L62] const SORT_7 var_9 = 0; [L63] const SORT_1 var_11 = 1; [L64] const SORT_7 var_15 = 1; [L65] const SORT_23 var_24 = 255; [L66] const SORT_32 var_33 = 0; [L67] const SORT_70 var_71 = 0; [L68] const SORT_23 var_85 = 0; [L69] const SORT_76 var_91 = 0; [L70] const SORT_118 var_119 = 0; [L71] const SORT_118 var_128 = 15; [L72] const SORT_23 var_153 = 93; [L73] const SORT_32 var_156 = 3; [L74] const SORT_32 var_177 = 7; [L75] const SORT_32 var_189 = 1; [L76] const SORT_32 var_199 = 2; [L77] const SORT_23 var_209 = 1; [L78] const SORT_32 var_258 = 5; [L79] const SORT_32 var_266 = 6; [L80] const SORT_32 var_270 = 4; [L81] const SORT_23 var_327 = 128; [L82] const SORT_23 var_335 = 221; [L83] const SORT_70 var_426 = 2; [L84] const SORT_70 var_429 = 1; [L85] const SORT_23 var_476 = 3; [L86] const SORT_23 var_479 = 131; [L87] const SORT_23 var_482 = 195; [L88] const SORT_23 var_485 = 7; [L89] const SORT_23 var_488 = 67; [L90] const SORT_118 var_522 = 3; [L91] const SORT_118 var_531 = 4; [L92] const SORT_118 var_552 = 6; [L93] const SORT_118 var_567 = 7; [L94] const SORT_118 var_572 = 5; [L95] const SORT_23 var_584 = 185; [L96] const SORT_23 var_588 = 186; [L97] const SORT_118 var_609 = 8; [L98] const SORT_70 var_627 = 3; [L99] const SORT_23 var_688 = 15; [L100] const SORT_118 var_714 = 13; [L101] const SORT_118 var_731 = 1; [L102] const SORT_118 var_733 = 2; [L103] const SORT_118 var_784 = 9; [L104] const SORT_118 var_785 = 10; [L105] const SORT_118 var_791 = 11; [L106] const SORT_118 var_792 = 12; [L107] const SORT_23 var_867 = 191; [L109] SORT_1 input_2; [L110] SORT_1 input_3; [L111] SORT_27 input_28; [L112] SORT_40 input_41; [L113] SORT_43 input_44; [L114] SORT_40 input_52; [L115] SORT_40 input_54; [L116] SORT_40 input_56; [L117] SORT_40 input_58; [L118] SORT_40 input_60; [L119] SORT_40 input_62; [L120] SORT_40 input_64; [L121] SORT_40 input_66; [L122] SORT_76 input_77; [L123] SORT_40 input_79; [L124] SORT_23 input_81; [L125] SORT_76 input_88; [L126] SORT_23 input_90; [L127] SORT_76 input_94; [L128] SORT_1 input_98; [L129] SORT_100 input_101; [L130] SORT_23 input_103; [L131] SORT_111 input_112; [L132] SORT_111 input_114; [L133] SORT_1 input_124; [L134] SORT_1 input_131; [L135] SORT_1 input_150; [L136] SORT_1 input_151; [L137] SORT_1 input_152; [L138] SORT_32 input_186; [L139] SORT_32 input_187; [L140] SORT_32 input_188; [L141] SORT_32 input_197; [L142] SORT_32 input_198; [L143] SORT_32 input_207; [L144] SORT_32 input_208; [L145] SORT_32 input_217; [L146] SORT_32 input_218; [L147] SORT_32 input_232; [L148] SORT_1 input_281; [L149] SORT_32 input_304; [L150] SORT_32 input_305; [L151] SORT_32 input_306; [L152] SORT_32 input_316; [L153] SORT_32 input_317; [L154] SORT_32 input_325; [L155] SORT_32 input_326; [L156] SORT_32 input_333; [L157] SORT_32 input_334; [L158] SORT_1 input_351; [L159] SORT_1 input_352; [L160] SORT_1 input_353; [L161] SORT_32 input_366; [L162] SORT_70 input_415; [L163] SORT_70 input_416; [L164] SORT_70 input_417; [L165] SORT_1 input_439; [L166] SORT_1 input_470; [L167] SORT_1 input_471; [L168] SORT_1 input_472; [L169] SORT_1 input_473; [L170] SORT_1 input_474; [L171] SORT_1 input_475; [L172] SORT_23 input_509; [L173] SORT_23 input_510; [L174] SORT_23 input_511; [L175] SORT_76 input_525; [L176] SORT_76 input_539; [L177] SORT_76 input_540; [L178] SORT_76 input_541; [L179] SORT_76 input_560; [L180] SORT_1 input_579; [L181] SORT_1 input_580; [L182] SORT_1 input_581; [L183] SORT_1 input_582; [L184] SORT_1 input_583; [L185] SORT_1 input_587; [L186] SORT_1 input_605; [L187] SORT_1 input_617; [L188] SORT_1 input_623; [L189] SORT_70 input_636; [L190] SORT_70 input_645; [L191] SORT_70 input_646; [L192] SORT_70 input_659; [L193] SORT_70 input_660; [L194] SORT_70 input_661; [L195] SORT_70 input_675; [L196] SORT_1 input_685; [L197] SORT_1 input_686; [L198] SORT_1 input_687; [L199] SORT_1 input_704; [L200] SORT_118 input_723; [L201] SORT_118 input_724; [L202] SORT_118 input_725; [L203] SORT_118 input_726; [L204] SORT_118 input_727; [L205] SORT_118 input_728; [L206] SORT_118 input_729; [L207] SORT_118 input_730; [L208] SORT_118 input_766; [L209] SORT_118 input_812; [L210] SORT_118 input_813; [L211] SORT_118 input_814; [L212] SORT_118 input_838; [L213] SORT_118 input_846; [L214] SORT_118 input_847; [L215] SORT_118 input_848; [L216] SORT_118 input_849; [L217] SORT_118 input_850; [L218] SORT_118 input_852; [L219] SORT_118 input_866; [L220] SORT_118 input_877; [L221] SORT_118 input_878; [L222] SORT_118 input_879; [L223] SORT_118 input_891; [L224] SORT_118 input_892; [L225] SORT_118 input_893; [L226] SORT_118 input_894; [L227] SORT_118 input_895; [L228] SORT_118 input_896; [L229] SORT_118 input_897; [L230] SORT_118 input_901; [L231] SORT_118 input_909; [L232] SORT_118 input_923; [L233] SORT_118 input_927; [L234] SORT_23 input_943; [L235] SORT_23 input_944; [L236] SORT_23 input_945; [L237] SORT_23 input_946; [L238] SORT_23 input_947; [L239] SORT_23 input_949; [L240] SORT_1 input_964; [L241] SORT_1 input_965; [L242] SORT_1 input_966; [L243] SORT_1 input_976; [L244] SORT_1 input_977; [L245] SORT_1 input_978; [L246] SORT_1 input_992; [L247] SORT_1 input_998; [L248] SORT_1 input_999; [L249] SORT_1 input_1000; [L250] SORT_1 input_1010; [L251] SORT_1 input_1011; [L252] SORT_1 input_1012; [L254] SORT_1 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L255] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L256] SORT_23 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_23; [L257] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L258] SORT_32 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_32; [L259] SORT_32 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_32; [L260] SORT_32 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_32; [L261] SORT_1 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L262] SORT_32 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_32; [L263] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L264] SORT_32 state_68 = __VERIFIER_nondet_uchar() & mask_SORT_32; [L265] SORT_70 state_72 = __VERIFIER_nondet_uchar() & mask_SORT_70; [L266] SORT_1 state_74 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L267] SORT_1 state_83 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L268] SORT_23 state_86 = __VERIFIER_nondet_uchar() & mask_SORT_23; [L269] SORT_76 state_96 = __VERIFIER_nondet_ushort() & mask_SORT_76; [L270] SORT_1 state_105 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L271] SORT_1 state_107 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L272] SORT_70 state_109 = __VERIFIER_nondet_uchar() & mask_SORT_70; [L273] SORT_1 state_116 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L274] SORT_118 state_120 = __VERIFIER_nondet_uchar() & mask_SORT_118; [L275] SORT_118 state_122 = __VERIFIER_nondet_uchar() & mask_SORT_118; [L276] SORT_76 state_126 = __VERIFIER_nondet_ushort() & mask_SORT_76; [L277] SORT_118 state_129 = __VERIFIER_nondet_uchar() & mask_SORT_118; [L278] SORT_23 state_133 = __VERIFIER_nondet_uchar() & mask_SORT_23; [L279] SORT_1 state_135 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L280] SORT_1 state_137 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L281] SORT_1 state_139 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L282] SORT_1 state_141 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L283] SORT_1 state_146 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L284] SORT_1 state_148 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L286] SORT_1 init_6_arg_1 = var_4; [L287] state_5 = init_6_arg_1 [L288] SORT_1 init_13_arg_1 = var_11; [L289] state_12 = init_13_arg_1 [L290] SORT_23 init_26_arg_1 = var_24; [L291] state_25 = init_26_arg_1 [L292] SORT_1 init_31_arg_1 = var_4; [L293] state_30 = init_31_arg_1 [L294] SORT_32 init_35_arg_1 = var_33; [L295] state_34 = init_35_arg_1 [L296] SORT_32 init_37_arg_1 = var_33; [L297] state_36 = init_37_arg_1 [L298] SORT_32 init_39_arg_1 = var_33; [L299] state_38 = init_39_arg_1 [L300] SORT_1 init_47_arg_1 = var_4; [L301] state_46 = init_47_arg_1 [L302] SORT_32 init_49_arg_1 = var_33; [L303] state_48 = init_49_arg_1 [L304] SORT_1 init_51_arg_1 = var_4; [L305] state_50 = init_51_arg_1 [L306] SORT_32 init_69_arg_1 = var_33; [L307] state_68 = init_69_arg_1 [L308] SORT_70 init_73_arg_1 = var_71; [L309] state_72 = init_73_arg_1 [L310] SORT_1 init_75_arg_1 = var_4; [L311] state_74 = init_75_arg_1 [L312] SORT_1 init_84_arg_1 = var_4; [L313] state_83 = init_84_arg_1 [L314] SORT_23 init_87_arg_1 = var_85; [L315] state_86 = init_87_arg_1 [L316] SORT_76 init_97_arg_1 = var_91; [L317] state_96 = init_97_arg_1 [L318] SORT_1 init_106_arg_1 = var_4; [L319] state_105 = init_106_arg_1 [L320] SORT_1 init_108_arg_1 = var_4; [L321] state_107 = init_108_arg_1 [L322] SORT_70 init_110_arg_1 = var_71; [L323] state_109 = init_110_arg_1 [L324] SORT_1 init_117_arg_1 = var_4; [L325] state_116 = init_117_arg_1 [L326] SORT_118 init_121_arg_1 = var_119; [L327] state_120 = init_121_arg_1 [L328] SORT_118 init_123_arg_1 = var_119; [L329] state_122 = init_123_arg_1 [L330] SORT_76 init_127_arg_1 = var_91; [L331] state_126 = init_127_arg_1 [L332] SORT_118 init_130_arg_1 = var_128; [L333] state_129 = init_130_arg_1 [L334] SORT_23 init_134_arg_1 = var_85; [L335] state_133 = init_134_arg_1 [L336] SORT_1 init_136_arg_1 = var_4; [L337] state_135 = init_136_arg_1 [L338] SORT_1 init_138_arg_1 = var_4; [L339] state_137 = init_138_arg_1 [L340] SORT_1 init_140_arg_1 = var_4; [L341] state_139 = init_140_arg_1 [L342] SORT_1 init_142_arg_1 = var_4; [L343] state_141 = init_142_arg_1 [L344] SORT_1 init_147_arg_1 = var_4; [L345] state_146 = init_147_arg_1 [L346] SORT_1 init_149_arg_1 = var_4; [L347] state_148 = init_149_arg_1 VAL [init_106_arg_1=0, init_108_arg_1=0, init_110_arg_1=0, init_117_arg_1=0, init_121_arg_1=0, init_123_arg_1=0, init_127_arg_1=0, init_130_arg_1=15, init_134_arg_1=0, init_136_arg_1=0, init_138_arg_1=0, init_13_arg_1=1, init_140_arg_1=0, init_142_arg_1=0, init_147_arg_1=0, init_149_arg_1=0, init_26_arg_1=255, init_31_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_39_arg_1=0, init_47_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_69_arg_1=0, init_6_arg_1=0, init_73_arg_1=0, init_75_arg_1=0, init_84_arg_1=0, init_87_arg_1=0, init_97_arg_1=0, mask_SORT_1=1, mask_SORT_100=8191, mask_SORT_111=18446744073709551615, mask_SORT_118=15, mask_SORT_23=255, mask_SORT_27=127, mask_SORT_32=7, mask_SORT_40=4294967295, mask_SORT_43=18446744073709551615, mask_SORT_7=4294967295, mask_SORT_70=3, mask_SORT_76=65535, msb_SORT_1=1, msb_SORT_100=4096, msb_SORT_111=4294967296, msb_SORT_118=8, msb_SORT_23=128, msb_SORT_27=64, msb_SORT_32=4, msb_SORT_40=8388608, msb_SORT_43=549755813888, msb_SORT_7=2147483648, msb_SORT_70=2, msb_SORT_76=32768, state_105=0, state_107=0, state_109=0, state_116=0, state_12=1, state_120=0, state_122=0, state_126=0, state_129=15, state_133=0, state_135=0, state_137=0, state_139=0, state_141=0, state_146=0, state_148=0, state_25=255, state_30=0, state_34=0, state_36=0, state_38=0, state_46=0, state_48=0, state_5=0, state_50=0, state_68=0, state_72=0, state_74=0, state_83=0, state_86=0, state_96=0, var_11=1, var_119=0, var_128=15, var_15=1, var_153=93, var_156=3, var_177=7, var_189=1, var_199=2, var_209=1, var_24=255, var_258=5, var_266=6, var_270=4, var_327=128, var_33=0, var_335=221, var_4=0, var_426=2, var_429=1, var_476=3, var_479=131, var_482=195, var_485=7, var_488=67, var_522=3, var_531=4, var_552=6, var_567=7, var_572=5, var_584=185, var_588=186, var_609=8, var_627=3, var_688=15, var_71=0, var_714=13, var_731=1, var_733=2, var_784=9, var_785=10, var_791=11, var_792=12, var_85=0, var_867=191, var_9=0, var_91=0] [L350] input_2 = __VERIFIER_nondet_uchar() [L351] input_3 = __VERIFIER_nondet_uchar() [L352] input_28 = __VERIFIER_nondet_uchar() [L353] input_41 = __VERIFIER_nondet_uint() [L354] input_44 = __VERIFIER_nondet_ulong() [L355] input_52 = __VERIFIER_nondet_uint() [L356] input_54 = __VERIFIER_nondet_uint() [L357] input_56 = __VERIFIER_nondet_uint() [L358] input_58 = __VERIFIER_nondet_uint() [L359] input_60 = __VERIFIER_nondet_uint() [L360] input_62 = __VERIFIER_nondet_uint() [L361] input_64 = __VERIFIER_nondet_uint() [L362] input_66 = __VERIFIER_nondet_uint() [L363] input_77 = __VERIFIER_nondet_ushort() [L364] input_79 = __VERIFIER_nondet_uint() [L365] input_81 = __VERIFIER_nondet_uchar() [L366] input_88 = __VERIFIER_nondet_ushort() [L367] input_90 = __VERIFIER_nondet_uchar() [L368] input_90 = input_90 & mask_SORT_23 [L369] input_94 = __VERIFIER_nondet_ushort() [L370] input_98 = __VERIFIER_nondet_uchar() [L371] input_101 = __VERIFIER_nondet_ushort() [L372] input_103 = __VERIFIER_nondet_uchar() [L373] input_112 = __VERIFIER_nondet_ulong() [L374] input_114 = __VERIFIER_nondet_ulong() [L375] input_124 = __VERIFIER_nondet_uchar() [L376] input_131 = __VERIFIER_nondet_uchar() [L377] input_150 = __VERIFIER_nondet_uchar() [L378] input_151 = __VERIFIER_nondet_uchar() [L379] input_152 = __VERIFIER_nondet_uchar() [L380] input_186 = __VERIFIER_nondet_uchar() [L381] input_187 = __VERIFIER_nondet_uchar() [L382] input_188 = __VERIFIER_nondet_uchar() [L383] input_197 = __VERIFIER_nondet_uchar() [L384] input_198 = __VERIFIER_nondet_uchar() [L385] input_207 = __VERIFIER_nondet_uchar() [L386] input_208 = __VERIFIER_nondet_uchar() [L387] input_217 = __VERIFIER_nondet_uchar() [L388] input_218 = __VERIFIER_nondet_uchar() [L389] input_232 = __VERIFIER_nondet_uchar() [L390] input_281 = __VERIFIER_nondet_uchar() [L391] input_304 = __VERIFIER_nondet_uchar() [L392] input_305 = __VERIFIER_nondet_uchar() [L393] input_306 = __VERIFIER_nondet_uchar() [L394] input_316 = __VERIFIER_nondet_uchar() [L395] input_317 = __VERIFIER_nondet_uchar() [L396] input_325 = __VERIFIER_nondet_uchar() [L397] input_326 = __VERIFIER_nondet_uchar() [L398] input_333 = __VERIFIER_nondet_uchar() [L399] input_334 = __VERIFIER_nondet_uchar() [L400] input_351 = __VERIFIER_nondet_uchar() [L401] input_352 = __VERIFIER_nondet_uchar() [L402] input_353 = __VERIFIER_nondet_uchar() [L403] input_366 = __VERIFIER_nondet_uchar() [L404] input_415 = __VERIFIER_nondet_uchar() [L405] input_416 = __VERIFIER_nondet_uchar() [L406] input_417 = __VERIFIER_nondet_uchar() [L407] input_439 = __VERIFIER_nondet_uchar() [L408] input_470 = __VERIFIER_nondet_uchar() [L409] input_471 = __VERIFIER_nondet_uchar() [L410] input_472 = __VERIFIER_nondet_uchar() [L411] input_473 = __VERIFIER_nondet_uchar() [L412] input_474 = __VERIFIER_nondet_uchar() [L413] input_475 = __VERIFIER_nondet_uchar() [L414] input_509 = __VERIFIER_nondet_uchar() [L415] input_510 = __VERIFIER_nondet_uchar() [L416] input_511 = __VERIFIER_nondet_uchar() [L417] input_525 = __VERIFIER_nondet_ushort() [L418] input_539 = __VERIFIER_nondet_ushort() [L419] input_540 = __VERIFIER_nondet_ushort() [L420] input_541 = __VERIFIER_nondet_ushort() [L421] input_560 = __VERIFIER_nondet_ushort() [L422] input_579 = __VERIFIER_nondet_uchar() [L423] input_580 = __VERIFIER_nondet_uchar() [L424] input_581 = __VERIFIER_nondet_uchar() [L425] input_582 = __VERIFIER_nondet_uchar() [L426] input_583 = __VERIFIER_nondet_uchar() [L427] input_587 = __VERIFIER_nondet_uchar() [L428] input_605 = __VERIFIER_nondet_uchar() [L429] input_617 = __VERIFIER_nondet_uchar() [L430] input_623 = __VERIFIER_nondet_uchar() [L431] input_636 = __VERIFIER_nondet_uchar() [L432] input_645 = __VERIFIER_nondet_uchar() [L433] input_646 = __VERIFIER_nondet_uchar() [L434] input_659 = __VERIFIER_nondet_uchar() [L435] input_660 = __VERIFIER_nondet_uchar() [L436] input_661 = __VERIFIER_nondet_uchar() [L437] input_675 = __VERIFIER_nondet_uchar() [L438] input_685 = __VERIFIER_nondet_uchar() [L439] input_686 = __VERIFIER_nondet_uchar() [L440] input_687 = __VERIFIER_nondet_uchar() [L441] input_704 = __VERIFIER_nondet_uchar() [L442] input_723 = __VERIFIER_nondet_uchar() [L443] input_724 = __VERIFIER_nondet_uchar() [L444] input_725 = __VERIFIER_nondet_uchar() [L445] input_726 = __VERIFIER_nondet_uchar() [L446] input_727 = __VERIFIER_nondet_uchar() [L447] input_728 = __VERIFIER_nondet_uchar() [L448] input_729 = __VERIFIER_nondet_uchar() [L449] input_730 = __VERIFIER_nondet_uchar() [L450] input_766 = __VERIFIER_nondet_uchar() [L451] input_812 = __VERIFIER_nondet_uchar() [L452] input_813 = __VERIFIER_nondet_uchar() [L453] input_814 = __VERIFIER_nondet_uchar() [L454] input_838 = __VERIFIER_nondet_uchar() [L455] input_846 = __VERIFIER_nondet_uchar() [L456] input_847 = __VERIFIER_nondet_uchar() [L457] input_848 = __VERIFIER_nondet_uchar() [L458] input_849 = __VERIFIER_nondet_uchar() [L459] input_850 = __VERIFIER_nondet_uchar() [L460] input_852 = __VERIFIER_nondet_uchar() [L461] input_866 = __VERIFIER_nondet_uchar() [L462] input_877 = __VERIFIER_nondet_uchar() [L463] input_878 = __VERIFIER_nondet_uchar() [L464] input_879 = __VERIFIER_nondet_uchar() [L465] input_891 = __VERIFIER_nondet_uchar() [L466] input_892 = __VERIFIER_nondet_uchar() [L467] input_893 = __VERIFIER_nondet_uchar() [L468] input_894 = __VERIFIER_nondet_uchar() [L469] input_895 = __VERIFIER_nondet_uchar() [L470] input_896 = __VERIFIER_nondet_uchar() [L471] input_897 = __VERIFIER_nondet_uchar() [L472] input_901 = __VERIFIER_nondet_uchar() [L473] input_909 = __VERIFIER_nondet_uchar() [L474] input_923 = __VERIFIER_nondet_uchar() [L475] input_927 = __VERIFIER_nondet_uchar() [L476] input_943 = __VERIFIER_nondet_uchar() [L477] input_944 = __VERIFIER_nondet_uchar() [L478] input_945 = __VERIFIER_nondet_uchar() [L479] input_946 = __VERIFIER_nondet_uchar() [L480] input_947 = __VERIFIER_nondet_uchar() [L481] input_949 = __VERIFIER_nondet_uchar() [L482] input_964 = __VERIFIER_nondet_uchar() [L483] input_965 = __VERIFIER_nondet_uchar() [L484] input_966 = __VERIFIER_nondet_uchar() [L485] input_976 = __VERIFIER_nondet_uchar() [L486] input_977 = __VERIFIER_nondet_uchar() [L487] input_978 = __VERIFIER_nondet_uchar() [L488] input_992 = __VERIFIER_nondet_uchar() [L489] input_998 = __VERIFIER_nondet_uchar() [L490] input_999 = __VERIFIER_nondet_uchar() [L491] input_1000 = __VERIFIER_nondet_uchar() [L492] input_1010 = __VERIFIER_nondet_uchar() [L493] input_1011 = __VERIFIER_nondet_uchar() [L494] input_1012 = __VERIFIER_nondet_uchar() [L497] SORT_1 var_8_arg_0 = state_5; [L498] var_8_arg_0 = var_8_arg_0 & mask_SORT_1 [L499] SORT_7 var_8 = var_8_arg_0; [L500] SORT_7 var_10_arg_0 = var_8; [L501] SORT_7 var_10_arg_1 = var_9; [L502] SORT_1 var_10 = var_10_arg_0 == var_10_arg_1; [L503] SORT_1 var_14_arg_0 = state_12; [L504] var_14_arg_0 = var_14_arg_0 & mask_SORT_1 [L505] SORT_7 var_14 = var_14_arg_0; [L506] SORT_7 var_16_arg_0 = var_14; [L507] SORT_7 var_16_arg_1 = var_15; [L508] SORT_1 var_16 = var_16_arg_0 == var_16_arg_1; [L509] SORT_1 var_17_arg_0 = var_10; [L510] SORT_1 var_17_arg_1 = var_16; [L511] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L512] SORT_1 var_20_arg_0 = var_17; [L513] SORT_1 var_20 = ~var_20_arg_0; [L514] SORT_1 var_21_arg_0 = var_11; [L515] SORT_1 var_21_arg_1 = var_20; [L516] SORT_1 var_21 = var_21_arg_0 & var_21_arg_1; [L517] var_21 = var_21 & mask_SORT_1 [L518] SORT_1 bad_22_arg_0 = var_21; [L519] CALL __VERIFIER_assert(!(bad_22_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 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, 0.2s 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 [2022-11-16 20:04:01,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mpeg.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0 --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 b6304bbe462b12fec4277ffb860d5f110fe5dc3d9c9a5595a3a99ec48e2713d6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 20:04:03,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:04:03,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:04:03,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:04:03,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:04:03,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:04:03,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:04:03,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:04:03,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:04:03,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:04:03,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:04:03,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:04:03,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:04:03,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:04:03,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:04:03,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:04:03,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:04:03,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:04:03,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:04:03,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:04:03,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:04:03,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:04:03,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:04:03,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:04:03,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:04:03,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:04:03,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:04:03,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:04:03,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:04:03,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:04:03,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:04:03,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:04:03,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:04:03,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:04:03,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:04:03,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:04:03,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:04:03,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:04:03,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:04:03,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:04:03,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:04:03,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-16 20:04:03,788 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:04:03,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:04:03,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:04:03,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:04:03,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:04:03,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:04:03,800 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:04:03,800 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:04:03,800 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:04:03,801 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:04:03,802 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:04:03,802 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:04:03,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:04:03,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:04:03,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:04:03,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:04:03,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:04:03,805 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 20:04:03,805 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 20:04:03,806 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 20:04:03,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:04:03,806 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:04:03,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:04:03,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:04:03,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 20:04:03,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:04:03,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:04:03,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:04:03,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:04:03,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:04:03,809 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 20:04:03,809 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 20:04:03,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:04:03,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:04:03,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 20:04:03,811 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_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6304bbe462b12fec4277ffb860d5f110fe5dc3d9c9a5595a3a99ec48e2713d6 [2022-11-16 20:04:04,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:04:04,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:04:04,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:04:04,246 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:04:04,247 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:04:04,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mpeg.c [2022-11-16 20:04:04,325 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/data/330aee5c0/f2838a8cf0984f93bef9ebaa169d2869/FLAG8c6e3819c [2022-11-16 20:04:05,023 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:04:05,024 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mpeg.c [2022-11-16 20:04:05,053 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/data/330aee5c0/f2838a8cf0984f93bef9ebaa169d2869/FLAG8c6e3819c [2022-11-16 20:04:05,181 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/data/330aee5c0/f2838a8cf0984f93bef9ebaa169d2869 [2022-11-16 20:04:05,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:04:05,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:04:05,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:04:05,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:04:05,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:04:05,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:04:05" (1/1) ... [2022-11-16 20:04:05,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dcb5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:05, skipping insertion in model container [2022-11-16 20:04:05,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:04:05" (1/1) ... [2022-11-16 20:04:05,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:04:05,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:04:05,512 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mpeg.c[1107,1120] [2022-11-16 20:04:06,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:04:06,089 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:04:06,100 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mpeg.c[1107,1120] [2022-11-16 20:04:06,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:04:06,315 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:04:06,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:06 WrapperNode [2022-11-16 20:04:06,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:04:06,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:04:06,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:04:06,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:04:06,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:06" (1/1) ... [2022-11-16 20:04:06,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:06" (1/1) ... [2022-11-16 20:04:06,567 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3197 [2022-11-16 20:04:06,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:04:06,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:04:06,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:04:06,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:04:06,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:06" (1/1) ... [2022-11-16 20:04:06,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:06" (1/1) ... [2022-11-16 20:04:06,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:06" (1/1) ... [2022-11-16 20:04:06,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:06" (1/1) ... [2022-11-16 20:04:06,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:06" (1/1) ... [2022-11-16 20:04:06,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:06" (1/1) ... [2022-11-16 20:04:06,722 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:06" (1/1) ... [2022-11-16 20:04:06,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:06" (1/1) ... [2022-11-16 20:04:06,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:04:06,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:04:06,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:04:06,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:04:06,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:06" (1/1) ... [2022-11-16 20:04:06,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:04:06,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:04:06,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:04:06,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:04:06,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:04:06,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:04:07,614 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:04:07,616 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:04:13,199 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:04:13,205 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:04:13,205 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:04:13,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:04:13 BoogieIcfgContainer [2022-11-16 20:04:13,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:04:13,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:04:13,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:04:13,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:04:13,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:04:05" (1/3) ... [2022-11-16 20:04:13,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c47250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:04:13, skipping insertion in model container [2022-11-16 20:04:13,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:06" (2/3) ... [2022-11-16 20:04:13,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c47250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:04:13, skipping insertion in model container [2022-11-16 20:04:13,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:04:13" (3/3) ... [2022-11-16 20:04:13,219 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mpeg.c [2022-11-16 20:04:13,237 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:04:13,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:04:13,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:04:13,306 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;@1795f53c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:04:13,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:04:13,311 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) [2022-11-16 20:04:13,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 20:04:13,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:04:13,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 20:04:13,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:04:13,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:04:13,323 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-16 20:04:13,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:04:13,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012007606] [2022-11-16 20:04:13,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:04:13,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:04:13,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:04:13,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:04:13,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 20:04:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:04:14,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 20:04:14,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:04:14,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:04:14,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:04:14,425 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:04:14,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012007606] [2022-11-16 20:04:14,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012007606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:04:14,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:04:14,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:04:14,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263725139] [2022-11-16 20:04:14,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:04:14,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:04:14,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:04:14,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:04:14,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:04:14,461 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) [2022-11-16 20:04:15,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:04:15,254 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-16 20:04:15,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:04:15,257 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 [2022-11-16 20:04:15,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:04:15,265 INFO L225 Difference]: With dead ends: 20 [2022-11-16 20:04:15,266 INFO L226 Difference]: Without dead ends: 11 [2022-11-16 20:04:15,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:04:15,274 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 20:04:15,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 20:04:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-16 20:04:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-16 20:04:15,305 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) [2022-11-16 20:04:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-16 20:04:15,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-16 20:04:15,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:04:15,308 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-16 20:04:15,308 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) [2022-11-16 20:04:15,309 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-16 20:04:15,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 20:04:15,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:04:15,309 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 20:04:15,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 20:04:15,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:04:15,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:04:15,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:04:15,535 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-16 20:04:15,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:04:15,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908671861] [2022-11-16 20:04:15,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:04:15,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:04:15,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:04:15,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:04:15,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 20:04:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:04:17,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-16 20:04:17,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:04:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:04:17,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:04:21,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:04:21,338 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:04:21,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908671861] [2022-11-16 20:04:21,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908671861] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:04:21,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [413121930] [2022-11-16 20:04:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:04:21,345 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:04:21,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:04:21,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:04:21,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-16 20:04:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:04:24,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-16 20:04:24,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:04:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:04:24,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:04:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:04:26,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [413121930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:04:26,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090205612] [2022-11-16 20:04:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:04:26,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:04:26,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:04:26,954 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:04:26,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 20:04:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:04:28,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-16 20:04:28,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:04:28,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:04:28,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:04:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:04:30,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090205612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:04:30,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 20:04:30,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 12 [2022-11-16 20:04:30,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070835957] [2022-11-16 20:04:30,540 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 20:04:30,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 20:04:30,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:04:30,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 20:04:30,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-16 20:04:30,544 INFO L87 Difference]: Start difference. First operand 9 states and 9 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) [2022-11-16 20:04:31,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:04:31,551 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-16 20:04:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 20:04:31,552 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 8 [2022-11-16 20:04:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:04:31,552 INFO L225 Difference]: With dead ends: 16 [2022-11-16 20:04:31,552 INFO L226 Difference]: Without dead ends: 14 [2022-11-16 20:04:31,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-16 20:04:31,554 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 20:04:31,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 23 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 13 Unchecked, 0.7s Time] [2022-11-16 20:04:31,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-16 20:04:31,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-16 20:04:31,560 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) [2022-11-16 20:04:31,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-16 20:04:31,561 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-16 20:04:31,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:04:31,562 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-16 20:04:31,562 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) [2022-11-16 20:04:31,562 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-16 20:04:31,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 20:04:31,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:04:31,563 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 20:04:31,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 20:04:31,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-16 20:04:31,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-16 20:04:32,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/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_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 20:04:32,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:04:32,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:04:32,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-16 20:04:32,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:04:32,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647957734] [2022-11-16 20:04:32,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:04:32,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:04:32,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:04:32,182 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:04:32,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 20:04:34,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:04:34,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:04:34,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 5451 conjuncts, 178 conjunts are in the unsatisfiable core [2022-11-16 20:04:34,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:04:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:04:35,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:05:16,978 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:05:16,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647957734] [2022-11-16 20:05:16,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Maybe an infinite loop [2022-11-16 20:05:16,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [130377894] [2022-11-16 20:05:16,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:05:16,980 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:05:16,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:05:16,981 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:05:16,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-16 20:05:22,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:05:22,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:05:22,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 5451 conjuncts, 229 conjunts are in the unsatisfiable core [2022-11-16 20:05:22,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:05:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:05:24,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:05:30,764 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Maybe an infinite loop [2022-11-16 20:05:30,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707521087] [2022-11-16 20:05:30,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:05:30,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:05:30,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:05:30,766 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:05:30,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 20:05:32,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:05:32,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:05:32,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 5451 conjuncts, 217 conjunts are in the unsatisfiable core [2022-11-16 20:05:32,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:05:34,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:05:34,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:06:37,774 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 729 DAG size of output: 195 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:06:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:38,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707521087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:06:38,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:06:38,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-16 20:06:38,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670629695] [2022-11-16 20:06:38,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 20:06:38,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 20:06:38,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:06:38,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 20:06:38,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-11-16 20:06:38,883 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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) [2022-11-16 20:06:40,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:06:40,654 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-16 20:06:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 20:06:40,655 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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 [2022-11-16 20:06:40,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:06:40,656 INFO L225 Difference]: With dead ends: 19 [2022-11-16 20:06:40,656 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 20:06:40,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-11-16 20:06:40,658 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:06:40,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 25 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 25 Unchecked, 1.4s Time] [2022-11-16 20:06:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 20:06:40,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-16 20:06:40,663 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) [2022-11-16 20:06:40,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-16 20:06:40,664 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-16 20:06:40,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:06:40,664 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-16 20:06:40,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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) [2022-11-16 20:06:40,665 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-16 20:06:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 20:06:40,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:06:40,665 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-16 20:06:40,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-16 20:06:40,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/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)] Ended with exit code 0 [2022-11-16 20:06:41,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 20:06:41,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:06:41,279 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:06:41,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:06:41,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-16 20:06:41,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:06:41,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761818418] [2022-11-16 20:06:41,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:06:41,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:06:41,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:06:41,289 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:06:41,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:06:44,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 20:06:44,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:06:44,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 8025 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-16 20:06:44,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:06:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:46,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:06:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:06:55,764 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:06:55,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761818418] [2022-11-16 20:06:55,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761818418] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:06:55,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [273934118] [2022-11-16 20:06:55,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:06:55,766 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:06:55,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:06:55,772 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:06:55,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-16 20:07:07,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 20:07:07,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:07:07,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 8025 conjuncts, 266 conjunts are in the unsatisfiable core [2022-11-16 20:07:07,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:07:10,237 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:07:10,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:07:50,564 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 324 DAG size of output: 227 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:10:26,031 WARN L233 SmtUtils]: Spent 18.30s on a formula simplification. DAG size of input: 788 DAG size of output: 279 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:10:28,395 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:10:28,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [273934118] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:10:28,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202262189] [2022-11-16 20:10:28,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:10:28,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:10:28,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:10:28,399 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:10:28,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 20:10:33,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 20:10:33,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:10:33,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 8025 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-16 20:10:33,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:10:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:10:35,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:10:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:10:41,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202262189] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:10:41,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 20:10:41,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 10, 10] total 38 [2022-11-16 20:10:41,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882485305] [2022-11-16 20:10:41,983 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 20:10:41,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 20:10:41,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:10:41,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 20:10:41,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1178, Unknown=1, NotChecked=0, Total=1406 [2022-11-16 20:10:41,986 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 38 states, 38 states have (on average 1.736842105263158) internal successors, (66), 38 states have internal predecessors, (66), 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) [2022-11-16 20:10:47,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:10:47,256 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-11-16 20:10:47,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 20:10:47,257 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.736842105263158) internal successors, (66), 38 states have internal predecessors, (66), 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 [2022-11-16 20:10:47,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:10:47,261 INFO L225 Difference]: With dead ends: 26 [2022-11-16 20:10:47,261 INFO L226 Difference]: Without dead ends: 24 [2022-11-16 20:10:47,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 41.6s TimeCoverageRelationStatistics Valid=438, Invalid=1723, Unknown=1, NotChecked=0, Total=2162 [2022-11-16 20:10:47,264 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 62 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:10:47,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 54 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 93 Unchecked, 0.5s Time] [2022-11-16 20:10:47,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-16 20:10:47,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-16 20:10:47,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 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) [2022-11-16 20:10:47,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-11-16 20:10:47,282 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 14 [2022-11-16 20:10:47,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:10:47,282 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-11-16 20:10:47,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.736842105263158) internal successors, (66), 38 states have internal predecessors, (66), 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) [2022-11-16 20:10:47,285 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-11-16 20:10:47,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 20:10:47,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:10:47,292 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-11-16 20:10:47,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 20:10:47,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-16 20:10:47,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:10:47,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:10:47,920 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:10:47,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:10:47,920 INFO L85 PathProgramCache]: Analyzing trace with hash 142558665, now seen corresponding path program 4 times [2022-11-16 20:10:47,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:10:47,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228151136] [2022-11-16 20:10:47,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:10:47,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:10:47,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:10:47,932 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:10:47,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 20:10:53,484 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:10:53,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:10:53,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 15747 conjuncts, 977 conjunts are in the unsatisfiable core [2022-11-16 20:10:53,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:11:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:11:12,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:11:20,964 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:11:20,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228151136] [2022-11-16 20:11:20,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Maybe an infinite loop [2022-11-16 20:11:20,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [638501184] [2022-11-16 20:11:20,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:11:20,965 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:11:20,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:11:20,966 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:11:20,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-16 20:11:38,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:11:38,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:11:39,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 15747 conjuncts, 1050 conjunts are in the unsatisfiable core [2022-11-16 20:11:39,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:11:57,538 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:11:57,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:12:16,464 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Maybe an infinite loop [2022-11-16 20:12:16,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392270209] [2022-11-16 20:12:16,464 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:12:16,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:12:16,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:12:16,467 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:12:16,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 20:12:23,873 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:12:23,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:12:24,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 15747 conjuncts, 142 conjunts are in the unsatisfiable core [2022-11-16 20:12:24,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:12:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:12:31,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:12:55,466 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:12:55,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392270209] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:12:55,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:12:55,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-16 20:12:55,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297804740] [2022-11-16 20:12:55,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 20:12:55,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 20:12:55,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:12:55,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 20:12:55,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=865, Unknown=10, NotChecked=0, Total=1056 [2022-11-16 20:12:55,473 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 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) [2022-11-16 20:13:42,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:13:42,475 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-11-16 20:13:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 20:13:42,476 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 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 23 [2022-11-16 20:13:42,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:13:42,477 INFO L225 Difference]: With dead ends: 32 [2022-11-16 20:13:42,477 INFO L226 Difference]: Without dead ends: 30 [2022-11-16 20:13:42,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 63 SyntacticMatches, 10 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 78.5s TimeCoverageRelationStatistics Valid=474, Invalid=1763, Unknown=19, NotChecked=0, Total=2256 [2022-11-16 20:13:42,479 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:13:42,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 42 Unchecked, 0.9s Time] [2022-11-16 20:13:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-16 20:13:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-16 20:13:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 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) [2022-11-16 20:13:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2022-11-16 20:13:42,493 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2022-11-16 20:13:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:13:42,493 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2022-11-16 20:13:42,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 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) [2022-11-16 20:13:42,494 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2022-11-16 20:13:42,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 20:13:42,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:13:42,495 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1] [2022-11-16 20:13:42,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 20:13:42,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 20:13:42,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-16 20:13:43,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 20:13:43,113 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:13:43,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:13:43,113 INFO L85 PathProgramCache]: Analyzing trace with hash 637038473, now seen corresponding path program 5 times [2022-11-16 20:13:43,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:13:43,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943788328] [2022-11-16 20:13:43,124 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 20:13:43,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:13:43,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:13:43,127 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:13:43,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7895423-f263-44fb-997c-78176ef43fa0/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:14:02,273 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-11-16 20:14:02,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:14:02,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 20895 conjuncts, 1374 conjunts are in the unsatisfiable core [2022-11-16 20:14:02,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:15:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:15:15,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:17:08,349 WARN L233 SmtUtils]: Spent 10.54s on a formula simplification. DAG size of input: 474 DAG size of output: 286 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)