./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS --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 7079b3b743df1a5b92403bcbdc45dcbd5b2b4b373695675f6bb47b5ecc70ce4f --- 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-8393723 [2022-11-19 07:35:01,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:35:01,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:35:01,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:35:01,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:35:01,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:35:01,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:35:01,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:35:01,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:35:01,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:35:01,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:35:01,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:35:01,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:35:01,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:35:01,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:35:01,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:35:01,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:35:01,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:35:01,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:35:01,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:35:01,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:35:01,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:35:01,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:35:01,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:35:01,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:35:01,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:35:01,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:35:01,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:35:01,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:35:01,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:35:01,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:35:01,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:35:01,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:35:01,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:35:01,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:35:01,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:35:01,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:35:01,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:35:01,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:35:01,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:35:01,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:35:01,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:35:01,219 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:35:01,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:35:01,220 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:35:01,220 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:35:01,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:35:01,221 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:35:01,222 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:35:01,222 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:35:01,222 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:35:01,222 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:35:01,223 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:35:01,224 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:35:01,224 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:35:01,224 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:35:01,224 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:35:01,225 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:35:01,225 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:35:01,225 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:35:01,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:35:01,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:35:01,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:35:01,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:35:01,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:35:01,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:35:01,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:35:01,229 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:35:01,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:35:01,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:35:01,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:35:01,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:35:01,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:35:01,230 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:35:01,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:35:01,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:35:01,231 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:35:01,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:35:01,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:35:01,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:35:01,232 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_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7079b3b743df1a5b92403bcbdc45dcbd5b2b4b373695675f6bb47b5ecc70ce4f [2022-11-19 07:35:01,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:35:01,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:35:01,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:35:01,485 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:35:01,486 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:35:01,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c [2022-11-19 07:35:01,583 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/data/176891e86/60879ffbfbb34a23988d54b6cffcb00d/FLAG0cc79b8f6 [2022-11-19 07:35:02,209 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:35:02,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c [2022-11-19 07:35:02,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/data/176891e86/60879ffbfbb34a23988d54b6cffcb00d/FLAG0cc79b8f6 [2022-11-19 07:35:02,406 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/data/176891e86/60879ffbfbb34a23988d54b6cffcb00d [2022-11-19 07:35:02,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:35:02,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:35:02,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:35:02,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:35:02,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:35:02,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:02" (1/1) ... [2022-11-19 07:35:02,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c3705e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:02, skipping insertion in model container [2022-11-19 07:35:02,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:02" (1/1) ... [2022-11-19 07:35:02,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:35:02,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:35:02,779 WARN L234 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_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c[1014,1027] [2022-11-19 07:35:03,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:35:03,209 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:35:03,220 WARN L234 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_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c[1014,1027] [2022-11-19 07:35:03,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:35:03,371 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:35:03,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:03 WrapperNode [2022-11-19 07:35:03,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:35:03,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:35:03,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:35:03,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:35:03,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:03" (1/1) ... [2022-11-19 07:35:03,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:03" (1/1) ... [2022-11-19 07:35:03,591 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2883 [2022-11-19 07:35:03,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:35:03,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:35:03,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:35:03,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:35:03,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:03" (1/1) ... [2022-11-19 07:35:03,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:03" (1/1) ... [2022-11-19 07:35:03,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:03" (1/1) ... [2022-11-19 07:35:03,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:03" (1/1) ... [2022-11-19 07:35:03,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:03" (1/1) ... [2022-11-19 07:35:03,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:03" (1/1) ... [2022-11-19 07:35:03,795 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:03" (1/1) ... [2022-11-19 07:35:03,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:03" (1/1) ... [2022-11-19 07:35:03,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:35:03,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:35:03,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:35:03,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:35:03,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:03" (1/1) ... [2022-11-19 07:35:03,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:35:03,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:35:03,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:35:03,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:35:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:35:03,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:35:04,490 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:35:04,492 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:35:09,111 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:35:25,842 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:35:25,842 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:35:25,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:25 BoogieIcfgContainer [2022-11-19 07:35:25,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:35:25,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:35:25,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:35:25,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:35:25,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:02" (1/3) ... [2022-11-19 07:35:25,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26abca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:25, skipping insertion in model container [2022-11-19 07:35:25,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:03" (2/3) ... [2022-11-19 07:35:25,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26abca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:25, skipping insertion in model container [2022-11-19 07:35:25,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:25" (3/3) ... [2022-11-19 07:35:25,854 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.4.prop1-func-interl.c [2022-11-19 07:35:25,874 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:35:25,875 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:35:25,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:35:25,926 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;@429b4f0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:35:25,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:35:25,930 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) [2022-11-19 07:35:25,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:35:25,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:25,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:35:25,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash 57108221, now seen corresponding path program 1 times [2022-11-19 07:35:25,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:35:25,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374958382] [2022-11-19 07:35:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:25,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:35:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:35:26,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:35:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:35:26,650 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:35:26,652 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:35:26,653 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:35:26,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:35:26,660 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 07:35:26,664 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:35:26,703 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 07:35:26,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:35:26 BoogieIcfgContainer [2022-11-19 07:35:26,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:35:26,723 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:35:26,724 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:35:26,724 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:35:26,725 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:25" (3/4) ... [2022-11-19 07:35:26,728 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:35:26,729 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:35:26,730 INFO L158 Benchmark]: Toolchain (without parser) took 24320.18ms. Allocated memory was 151.0MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 113.5MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 913.0MB. Max. memory is 16.1GB. [2022-11-19 07:35:26,731 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory was 52.3MB in the beginning and 52.2MB in the end (delta: 16.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:35:26,732 INFO L158 Benchmark]: CACSL2BoogieTranslator took 959.98ms. Allocated memory is still 151.0MB. Free memory was 113.2MB in the beginning and 72.2MB in the end (delta: 40.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-19 07:35:26,734 INFO L158 Benchmark]: Boogie Procedure Inliner took 219.33ms. Allocated memory is still 151.0MB. Free memory was 72.2MB in the beginning and 106.3MB in the end (delta: -34.1MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2022-11-19 07:35:26,738 INFO L158 Benchmark]: Boogie Preprocessor took 307.62ms. Allocated memory is still 151.0MB. Free memory was 106.3MB in the beginning and 102.3MB in the end (delta: 4.0MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2022-11-19 07:35:26,740 INFO L158 Benchmark]: RCFGBuilder took 21944.62ms. Allocated memory was 151.0MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 102.3MB in the beginning and 3.1GB in the end (delta: -3.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-19 07:35:26,741 INFO L158 Benchmark]: TraceAbstraction took 874.30ms. Allocated memory is still 4.0GB. Free memory was 3.1GB in the beginning and 3.0GB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2022-11-19 07:35:26,742 INFO L158 Benchmark]: Witness Printer took 5.36ms. Allocated memory is still 4.0GB. Free memory was 3.0GB in the beginning and 3.0GB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:35:26,746 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory was 52.3MB in the beginning and 52.2MB in the end (delta: 16.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 959.98ms. Allocated memory is still 151.0MB. Free memory was 113.2MB in the beginning and 72.2MB in the end (delta: 40.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 219.33ms. Allocated memory is still 151.0MB. Free memory was 72.2MB in the beginning and 106.3MB in the end (delta: -34.1MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 307.62ms. Allocated memory is still 151.0MB. Free memory was 106.3MB in the beginning and 102.3MB in the end (delta: 4.0MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. * RCFGBuilder took 21944.62ms. Allocated memory was 151.0MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 102.3MB in the beginning and 3.1GB in the end (delta: -3.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * TraceAbstraction took 874.30ms. Allocated memory is still 4.0GB. Free memory was 3.1GB in the beginning and 3.0GB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Witness Printer took 5.36ms. Allocated memory is still 4.0GB. Free memory was 3.0GB in the beginning and 3.0GB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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 235, overapproximation of bitwiseAnd at line 177. 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_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_24 = 0; [L39] const SORT_4 var_67 = 1; [L40] const SORT_4 var_68 = 0; [L41] const SORT_2 var_79 = 1; [L42] const SORT_3 var_81 = 0; [L43] const SORT_4 var_84 = 4; [L44] const SORT_2 var_88 = 0; [L45] const SORT_4 var_155 = 2; [L46] const SORT_2 var_158 = 2; [L47] const SORT_4 var_182 = 3; [L48] const SORT_2 var_185 = 3; [L50] SORT_1 input_80; [L51] SORT_1 input_90; [L52] SORT_1 input_92; [L53] SORT_1 input_99; [L54] SORT_1 input_101; [L55] SORT_1 input_108; [L56] SORT_1 input_110; [L57] SORT_1 input_117; [L58] SORT_1 input_209; [L59] SORT_1 input_213; [L60] SORT_1 input_216; [L61] SORT_1 input_217; [L62] SORT_1 input_218; [L63] SORT_1 input_219; [L64] SORT_1 input_220; [L65] SORT_1 input_221; [L66] SORT_1 input_231; [L67] SORT_1 input_237; [L68] SORT_1 input_243; [L69] SORT_1 input_249; [L70] SORT_1 input_264; [L71] SORT_1 input_282; [L72] SORT_1 input_300; [L73] SORT_1 input_318; [L75] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L80] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L81] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L82] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L83] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L84] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] SORT_2 init_7_arg_1 = var_5; [L107] state_6 = init_7_arg_1 [L108] SORT_2 init_9_arg_1 = var_5; [L109] state_8 = init_9_arg_1 [L110] SORT_2 init_11_arg_1 = var_5; [L111] state_10 = init_11_arg_1 [L112] SORT_2 init_13_arg_1 = var_5; [L113] state_12 = init_13_arg_1 [L114] SORT_2 init_15_arg_1 = var_5; [L115] state_14 = init_15_arg_1 [L116] SORT_2 init_17_arg_1 = var_5; [L117] state_16 = init_17_arg_1 [L118] SORT_2 init_19_arg_1 = var_5; [L119] state_18 = init_19_arg_1 [L120] SORT_2 init_21_arg_1 = var_5; [L121] state_20 = init_21_arg_1 [L122] SORT_2 init_23_arg_1 = var_5; [L123] state_22 = init_23_arg_1 [L124] SORT_1 init_26_arg_1 = var_24; [L125] state_25 = init_26_arg_1 [L126] SORT_1 init_28_arg_1 = var_24; [L127] state_27 = init_28_arg_1 [L128] SORT_1 init_30_arg_1 = var_24; [L129] state_29 = init_30_arg_1 [L130] SORT_1 init_32_arg_1 = var_24; [L131] state_31 = init_32_arg_1 [L132] SORT_1 init_34_arg_1 = var_24; [L133] state_33 = init_34_arg_1 [L134] SORT_1 init_36_arg_1 = var_24; [L135] state_35 = init_36_arg_1 [L136] SORT_1 init_38_arg_1 = var_24; [L137] state_37 = init_38_arg_1 [L138] SORT_1 init_40_arg_1 = var_24; [L139] state_39 = init_40_arg_1 [L140] SORT_1 init_42_arg_1 = var_24; [L141] state_41 = init_42_arg_1 [L142] SORT_1 init_44_arg_1 = var_24; [L143] state_43 = init_44_arg_1 [L144] SORT_1 init_46_arg_1 = var_24; [L145] state_45 = init_46_arg_1 [L146] SORT_1 init_48_arg_1 = var_24; [L147] state_47 = init_48_arg_1 [L148] SORT_1 init_50_arg_1 = var_24; [L149] state_49 = init_50_arg_1 [L150] SORT_1 init_52_arg_1 = var_24; [L151] state_51 = init_52_arg_1 [L152] SORT_1 init_54_arg_1 = var_24; [L153] state_53 = init_54_arg_1 [L154] SORT_1 init_56_arg_1 = var_24; [L155] state_55 = init_56_arg_1 [L156] SORT_1 init_58_arg_1 = var_24; [L157] state_57 = init_58_arg_1 [L158] SORT_1 init_60_arg_1 = var_24; [L159] state_59 = init_60_arg_1 [L160] SORT_1 init_62_arg_1 = var_24; [L161] state_61 = init_62_arg_1 [L162] SORT_1 init_64_arg_1 = var_24; [L163] state_63 = init_64_arg_1 [L164] SORT_1 init_66_arg_1 = var_24; [L165] state_65 = init_66_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_8=0, var_155=2, var_158=2, var_182=3, var_185=3, var_24=0, var_5=0, var_67=1, var_68=0, var_79=1, var_81=0, var_84=4, var_88=0] [L168] input_80 = __VERIFIER_nondet_uchar() [L169] input_90 = __VERIFIER_nondet_uchar() [L170] input_92 = __VERIFIER_nondet_uchar() [L171] input_99 = __VERIFIER_nondet_uchar() [L172] input_101 = __VERIFIER_nondet_uchar() [L173] input_108 = __VERIFIER_nondet_uchar() [L174] input_110 = __VERIFIER_nondet_uchar() [L175] input_117 = __VERIFIER_nondet_uchar() [L176] input_209 = __VERIFIER_nondet_uchar() [L177] input_209 = input_209 & mask_SORT_1 [L178] input_213 = __VERIFIER_nondet_uchar() [L179] input_213 = input_213 & mask_SORT_1 [L180] input_216 = __VERIFIER_nondet_uchar() [L181] input_216 = input_216 & mask_SORT_1 [L182] input_217 = __VERIFIER_nondet_uchar() [L183] input_217 = input_217 & mask_SORT_1 [L184] input_218 = __VERIFIER_nondet_uchar() [L185] input_218 = input_218 & mask_SORT_1 [L186] input_219 = __VERIFIER_nondet_uchar() [L187] input_219 = input_219 & mask_SORT_1 [L188] input_220 = __VERIFIER_nondet_uchar() [L189] input_220 = input_220 & mask_SORT_1 [L190] input_221 = __VERIFIER_nondet_uchar() [L191] input_221 = input_221 & mask_SORT_1 [L192] input_231 = __VERIFIER_nondet_uchar() [L193] input_231 = input_231 & mask_SORT_1 [L194] input_237 = __VERIFIER_nondet_uchar() [L195] input_237 = input_237 & mask_SORT_1 [L196] input_243 = __VERIFIER_nondet_uchar() [L197] input_243 = input_243 & mask_SORT_1 [L198] input_249 = __VERIFIER_nondet_uchar() [L199] input_249 = input_249 & mask_SORT_1 [L200] input_264 = __VERIFIER_nondet_uchar() [L201] input_282 = __VERIFIER_nondet_uchar() [L202] input_300 = __VERIFIER_nondet_uchar() [L203] input_318 = __VERIFIER_nondet_uchar() [L206] SORT_1 var_69_arg_0 = state_33; [L207] SORT_4 var_69_arg_1 = var_67; [L208] SORT_4 var_69_arg_2 = var_68; [L209] SORT_4 var_69 = var_69_arg_0 ? var_69_arg_1 : var_69_arg_2; [L210] SORT_1 var_70_arg_0 = state_43; [L211] SORT_4 var_70_arg_1 = var_67; [L212] SORT_4 var_70_arg_2 = var_68; [L213] SORT_4 var_70 = var_70_arg_0 ? var_70_arg_1 : var_70_arg_2; [L214] SORT_4 var_71_arg_0 = var_69; [L215] SORT_4 var_71_arg_1 = var_70; [L216] SORT_4 var_71 = var_71_arg_0 + var_71_arg_1; [L217] SORT_1 var_72_arg_0 = state_53; [L218] SORT_4 var_72_arg_1 = var_67; [L219] SORT_4 var_72_arg_2 = var_68; [L220] SORT_4 var_72 = var_72_arg_0 ? var_72_arg_1 : var_72_arg_2; [L221] SORT_4 var_73_arg_0 = var_71; [L222] SORT_4 var_73_arg_1 = var_72; [L223] SORT_4 var_73 = var_73_arg_0 + var_73_arg_1; [L224] SORT_1 var_74_arg_0 = state_63; [L225] SORT_4 var_74_arg_1 = var_67; [L226] SORT_4 var_74_arg_2 = var_68; [L227] SORT_4 var_74 = var_74_arg_0 ? var_74_arg_1 : var_74_arg_2; [L228] SORT_4 var_75_arg_0 = var_73; [L229] SORT_4 var_75_arg_1 = var_74; [L230] SORT_4 var_75 = var_75_arg_0 + var_75_arg_1; [L231] var_75 = var_75 & mask_SORT_4 [L232] SORT_4 var_76_arg_0 = var_75; [L233] SORT_4 var_76_arg_1 = var_67; [L234] SORT_1 var_76 = var_76_arg_0 <= var_76_arg_1; [L235] SORT_1 var_77_arg_0 = ~state_65; [L236] var_77_arg_0 = var_77_arg_0 & mask_SORT_1 [L237] SORT_1 var_77_arg_1 = ~var_76; [L238] var_77_arg_1 = var_77_arg_1 & mask_SORT_1 [L239] SORT_1 var_77 = var_77_arg_0 & var_77_arg_1; [L240] var_77 = var_77 & mask_SORT_1 [L241] SORT_1 bad_78_arg_0 = var_77; [L242] CALL __VERIFIER_assert(!(bad_78_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: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 07:35:26,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/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_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS --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 7079b3b743df1a5b92403bcbdc45dcbd5b2b4b373695675f6bb47b5ecc70ce4f --- 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-8393723 [2022-11-19 07:35:29,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:35:29,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:35:29,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:35:29,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:35:29,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:35:29,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:35:29,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:35:29,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:35:29,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:35:29,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:35:29,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:35:29,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:35:29,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:35:29,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:35:29,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:35:29,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:35:29,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:35:29,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:35:29,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:35:29,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:35:29,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:35:29,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:35:29,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:35:29,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:35:29,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:35:29,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:35:29,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:35:29,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:35:29,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:35:29,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:35:29,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:35:29,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:35:29,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:35:29,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:35:29,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:35:29,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:35:29,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:35:29,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:35:29,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:35:29,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:35:29,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 07:35:29,353 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:35:29,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:35:29,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:35:29,355 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:35:29,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:35:29,356 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:35:29,357 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:35:29,357 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:35:29,357 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:35:29,357 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:35:29,358 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:35:29,358 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:35:29,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:35:29,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:35:29,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:35:29,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:35:29,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:35:29,361 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:35:29,361 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:35:29,361 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:35:29,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:35:29,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:35:29,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:35:29,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:35:29,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:35:29,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:35:29,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:35:29,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:35:29,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:35:29,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:35:29,364 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:35:29,364 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:35:29,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:35:29,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:35:29,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:35:29,365 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_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7079b3b743df1a5b92403bcbdc45dcbd5b2b4b373695675f6bb47b5ecc70ce4f [2022-11-19 07:35:29,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:35:29,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:35:29,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:35:29,791 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:35:29,792 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:35:29,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c [2022-11-19 07:35:29,878 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/data/30cc7cff1/4165b48341ad4db8ac8f150a368ea21c/FLAG2d22493d9 [2022-11-19 07:35:30,433 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:35:30,434 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c [2022-11-19 07:35:30,457 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/data/30cc7cff1/4165b48341ad4db8ac8f150a368ea21c/FLAG2d22493d9 [2022-11-19 07:35:30,686 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/data/30cc7cff1/4165b48341ad4db8ac8f150a368ea21c [2022-11-19 07:35:30,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:35:30,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:35:30,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:35:30,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:35:30,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:35:30,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:30" (1/1) ... [2022-11-19 07:35:30,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b611f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:30, skipping insertion in model container [2022-11-19 07:35:30,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:30" (1/1) ... [2022-11-19 07:35:30,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:35:30,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:35:30,935 WARN L234 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_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c[1014,1027] [2022-11-19 07:35:31,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:35:31,354 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:35:31,369 WARN L234 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_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c[1014,1027] [2022-11-19 07:35:31,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:35:31,548 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:35:31,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:31 WrapperNode [2022-11-19 07:35:31,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:35:31,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:35:31,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:35:31,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:35:31,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:31" (1/1) ... [2022-11-19 07:35:31,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:31" (1/1) ... [2022-11-19 07:35:31,750 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1847 [2022-11-19 07:35:31,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:35:31,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:35:31,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:35:31,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:35:31,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:31" (1/1) ... [2022-11-19 07:35:31,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:31" (1/1) ... [2022-11-19 07:35:31,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:31" (1/1) ... [2022-11-19 07:35:31,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:31" (1/1) ... [2022-11-19 07:35:31,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:31" (1/1) ... [2022-11-19 07:35:31,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:31" (1/1) ... [2022-11-19 07:35:31,829 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:31" (1/1) ... [2022-11-19 07:35:31,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:31" (1/1) ... [2022-11-19 07:35:31,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:35:31,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:35:31,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:35:31,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:35:31,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:31" (1/1) ... [2022-11-19 07:35:31,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:35:31,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:35:31,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:35:31,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:35:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:35:31,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:35:32,540 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:35:32,542 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:35:37,005 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:35:37,014 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:35:37,014 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:35:37,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:37 BoogieIcfgContainer [2022-11-19 07:35:37,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:35:37,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:35:37,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:35:37,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:35:37,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:30" (1/3) ... [2022-11-19 07:35:37,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab3868b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:37, skipping insertion in model container [2022-11-19 07:35:37,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:31" (2/3) ... [2022-11-19 07:35:37,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab3868b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:37, skipping insertion in model container [2022-11-19 07:35:37,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:37" (3/3) ... [2022-11-19 07:35:37,029 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.4.prop1-func-interl.c [2022-11-19 07:35:37,049 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:35:37,049 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:35:37,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:35:37,130 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;@64478207, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:35:37,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:35:37,134 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) [2022-11-19 07:35:37,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:35:37,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:37,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:35:37,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:37,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:37,146 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 07:35:37,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:37,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393368918] [2022-11-19 07:35:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:37,161 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 [2022-11-19 07:35:37,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:37,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:35:37,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:35:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:37,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-19 07:35:37,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:35:37,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:37,938 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:35:37,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393368918] [2022-11-19 07:35:37,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393368918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:37,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:37,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:35:37,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518722420] [2022-11-19 07:35:37,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:37,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:35:37,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:35:37,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:35:37,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:35:37,978 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) [2022-11-19 07:35:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:38,900 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 07:35:38,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:35:38,904 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 [2022-11-19 07:35:38,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:38,917 INFO L225 Difference]: With dead ends: 20 [2022-11-19 07:35:38,917 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 07:35:38,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:35:38,927 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:38,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 07:35:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 07:35:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 07:35:38,964 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) [2022-11-19 07:35:38,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 07:35:38,967 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 07:35:38,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:38,968 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 07:35:38,968 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) [2022-11-19 07:35:38,968 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 07:35:38,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:35:38,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:38,969 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:38,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:35:39,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:35:39,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:39,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:39,183 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 07:35:39,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:35:39,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033126379] [2022-11-19 07:35:39,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:39,188 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 [2022-11-19 07:35:39,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:35:39,189 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:35:39,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:35:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:41,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 144 conjunts are in the unsatisfiable core [2022-11-19 07:35:41,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:44,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:35:44,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:36:03,599 WARN L233 SmtUtils]: Spent 14.98s on a formula simplification that was a NOOP. DAG size: 283 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:36:04,616 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:36:04,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033126379] [2022-11-19 07:36:04,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033126379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:36:04,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1067103858] [2022-11-19 07:36:04,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:04,622 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:36:04,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:36:04,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:36:04,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 07:36:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:07,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 146 conjunts are in the unsatisfiable core [2022-11-19 07:36:07,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:36:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:36:09,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:36:42,195 WARN L233 SmtUtils]: Spent 29.13s on a formula simplification. DAG size of input: 88 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:57,981 WARN L233 SmtUtils]: Spent 1.13m on a formula simplification that was a NOOP. DAG size: 307 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:37:59,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1067103858] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:37:59,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159383118] [2022-11-19 07:37:59,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:37:59,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:37:59,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:37:59,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:37:59,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:38:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:38:00,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 149 conjunts are in the unsatisfiable core [2022-11-19 07:38:00,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:38:02,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:38:02,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:39:25,243 WARN L233 SmtUtils]: Spent 1.12m on a formula simplification that was a NOOP. DAG size: 307 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:40:40,719 WARN L233 SmtUtils]: Spent 1.14m on a formula simplification that was a NOOP. DAG size: 311 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:40:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:40:41,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159383118] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:40:41,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:40:41,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 15 [2022-11-19 07:40:41,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364254233] [2022-11-19 07:40:41,627 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:40:41,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-19 07:40:41,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:40:41,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-19 07:40:41,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=145, Unknown=9, NotChecked=0, Total=210 [2022-11-19 07:40:41,629 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 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) [2022-11-19 07:40:43,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:40:43,500 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 07:40:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:40:43,501 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 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) Word has length 8 [2022-11-19 07:40:43,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:40:43,502 INFO L225 Difference]: With dead ends: 16 [2022-11-19 07:40:43,502 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 07:40:43,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 282.9s TimeCoverageRelationStatistics Valid=77, Invalid=186, Unknown=9, NotChecked=0, Total=272 [2022-11-19 07:40:43,503 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:40:43,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 30 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 17 Unchecked, 1.0s Time] [2022-11-19 07:40:43,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 07:40:43,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 07:40:43,508 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) [2022-11-19 07:40:43,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 07:40:43,508 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 07:40:43,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:40:43,509 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 07:40:43,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 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) [2022-11-19 07:40:43,509 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 07:40:43,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:40:43,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:40:43,510 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 07:40:43,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 07:40:43,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-19 07:40:43,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:40:44,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:40:44,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:40:44,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:40:44,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 07:40:44,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:40:44,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106509517] [2022-11-19 07:40:44,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:40:44,120 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 [2022-11-19 07:40:44,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:40:44,121 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:40:44,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:40:48,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:40:48,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:40:48,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 3111 conjuncts, 241 conjunts are in the unsatisfiable core [2022-11-19 07:40:48,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:40:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:40:55,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:42:07,268 WARN L233 SmtUtils]: Spent 1.18m on a formula simplification. DAG size of input: 93 DAG size of output: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:43:18,705 WARN L233 SmtUtils]: Spent 1.15m on a formula simplification that was a NOOP. DAG size: 280 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:45:02,081 WARN L233 SmtUtils]: Spent 1.56m on a formula simplification that was a NOOP. DAG size: 1568 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:45:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:45:04,544 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:45:04,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106509517] [2022-11-19 07:45:04,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106509517] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:45:04,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1019603153] [2022-11-19 07:45:04,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:45:04,545 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:45:04,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:45:04,549 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:45:04,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d49edb-e3ae-4d0d-bad5-4b7bba331050/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 07:45:08,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:45:08,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:45:08,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 3111 conjuncts, 239 conjunts are in the unsatisfiable core [2022-11-19 07:45:08,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:45:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:45:20,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:49:35,239 WARN L233 SmtUtils]: Spent 4.11m on a formula simplification. DAG size of input: 191 DAG size of output: 137 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)