./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan --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 32bit --witnessprinter.graph.data.programhash 32b43cd88a17bb2f94fc5ece2031f89d5133ff9b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan --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 32bit --witnessprinter.graph.data.programhash 32b43cd88a17bb2f94fc5ece2031f89d5133ff9b ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 07:05:31,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:05:31,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:05:31,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:05:31,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:05:31,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:05:31,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:05:31,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:05:31,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:05:31,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:05:31,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:05:31,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:05:31,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:05:31,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:05:31,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:05:31,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:05:31,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:05:31,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:05:31,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:05:31,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:05:31,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:05:31,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:05:31,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:05:31,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:05:31,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:05:31,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:05:31,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:05:31,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:05:31,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:05:31,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:05:31,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:05:31,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:05:31,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:05:31,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:05:31,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:05:31,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:05:31,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:05:31,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:05:31,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:05:31,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:05:31,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:05:31,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 07:05:31,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:05:31,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:05:31,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:05:31,167 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:05:31,167 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:05:31,167 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:05:31,167 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:05:31,167 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:05:31,168 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:05:31,168 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:05:31,168 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:05:31,168 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:05:31,168 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:05:31,168 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:05:31,168 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:05:31,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:05:31,169 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:05:31,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:05:31,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:05:31,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:05:31,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:05:31,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:05:31,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:05:31,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:05:31,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:05:31,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:05:31,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:05:31,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:05:31,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:05:31,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:05:31,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:05:31,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:05:31,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:05:31,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:05:31,171 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:05:31,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:05:31,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:05:31,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:05:31,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:05:31,172 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32b43cd88a17bb2f94fc5ece2031f89d5133ff9b [2020-12-09 07:05:31,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:05:31,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:05:31,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:05:31,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:05:31,380 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:05:31,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c [2020-12-09 07:05:31,422 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/data/d25295337/9528d11aa771426fafaf8708ca4fca51/FLAGc5cbf12a4 [2020-12-09 07:05:31,786 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:05:31,786 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c [2020-12-09 07:05:31,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/data/d25295337/9528d11aa771426fafaf8708ca4fca51/FLAGc5cbf12a4 [2020-12-09 07:05:31,802 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/data/d25295337/9528d11aa771426fafaf8708ca4fca51 [2020-12-09 07:05:31,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:05:31,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:05:31,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:05:31,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:05:31,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:05:31,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:05:31" (1/1) ... [2020-12-09 07:05:31,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c199ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:31, skipping insertion in model container [2020-12-09 07:05:31,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:05:31" (1/1) ... [2020-12-09 07:05:31,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:05:31,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:05:31,934 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c[520,533] [2020-12-09 07:05:31,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:05:31,952 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:05:31,960 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c[520,533] [2020-12-09 07:05:31,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:05:31,975 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:05:31,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:31 WrapperNode [2020-12-09 07:05:31,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:05:31,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:05:31,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:05:31,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:05:31,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:31" (1/1) ... [2020-12-09 07:05:31,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:31" (1/1) ... [2020-12-09 07:05:32,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:05:32,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:05:32,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:05:32,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:05:32,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:31" (1/1) ... [2020-12-09 07:05:32,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:31" (1/1) ... [2020-12-09 07:05:32,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:31" (1/1) ... [2020-12-09 07:05:32,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:31" (1/1) ... [2020-12-09 07:05:32,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:31" (1/1) ... [2020-12-09 07:05:32,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:31" (1/1) ... [2020-12-09 07:05:32,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:31" (1/1) ... [2020-12-09 07:05:32,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:05:32,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:05:32,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:05:32,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:05:32,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:05:32,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:05:32,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:05:32,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:05:32,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:05:32,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:05:32,248 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 07:05:32,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:05:32 BoogieIcfgContainer [2020-12-09 07:05:32,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:05:32,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:05:32,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:05:32,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:05:32,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:05:31" (1/3) ... [2020-12-09 07:05:32,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbfedc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:05:32, skipping insertion in model container [2020-12-09 07:05:32,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:05:31" (2/3) ... [2020-12-09 07:05:32,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbfedc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:05:32, skipping insertion in model container [2020-12-09 07:05:32,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:05:32" (3/3) ... [2020-12-09 07:05:32,257 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound5.c [2020-12-09 07:05:32,268 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:05:32,271 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 07:05:32,279 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 07:05:32,300 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:05:32,300 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:05:32,300 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:05:32,300 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:05:32,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:05:32,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:05:32,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:05:32,301 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:05:32,312 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 07:05:32,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:05:32,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:05:32,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:05:32,317 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:05:32,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:05:32,321 INFO L82 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2020-12-09 07:05:32,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:05:32,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316929196] [2020-12-09 07:05:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:05:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:05:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:05:32,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316929196] [2020-12-09 07:05:32,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:05:32,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:05:32,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633771374] [2020-12-09 07:05:32,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 07:05:32,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:05:32,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 07:05:32,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:05:32,446 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-09 07:05:32,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:05:32,459 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-12-09 07:05:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 07:05:32,460 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 07:05:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:05:32,466 INFO L225 Difference]: With dead ends: 57 [2020-12-09 07:05:32,466 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 07:05:32,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:05:32,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 07:05:32,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 07:05:32,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 07:05:32,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 07:05:32,493 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2020-12-09 07:05:32,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:05:32,493 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 07:05:32,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 07:05:32,493 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 07:05:32,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:05:32,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:05:32,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:05:32,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:05:32,494 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:05:32,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:05:32,495 INFO L82 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2020-12-09 07:05:32,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:05:32,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644967568] [2020-12-09 07:05:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:05:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:05:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:05:32,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644967568] [2020-12-09 07:05:32,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:05:32,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:05:32,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058257317] [2020-12-09 07:05:32,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:05:32,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:05:32,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:05:32,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:05:32,571 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2020-12-09 07:05:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:05:32,659 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-12-09 07:05:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:05:32,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 07:05:32,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:05:32,660 INFO L225 Difference]: With dead ends: 30 [2020-12-09 07:05:32,660 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 07:05:32,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:05:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 07:05:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-12-09 07:05:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 07:05:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-09 07:05:32,666 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2020-12-09 07:05:32,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:05:32,666 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-09 07:05:32,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:05:32,666 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-09 07:05:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 07:05:32,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:05:32,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:05:32,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:05:32,667 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:05:32,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:05:32,668 INFO L82 PathProgramCache]: Analyzing trace with hash 225868067, now seen corresponding path program 1 times [2020-12-09 07:05:32,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:05:32,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840844090] [2020-12-09 07:05:32,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:05:32,684 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:05:32,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510860168] [2020-12-09 07:05:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:05:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:05:32,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 07:05:32,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:05:32,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:05:32,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:05:32,831 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 07:05:32,832 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 07:05:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:05:32,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840844090] [2020-12-09 07:05:32,850 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:05:32,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510860168] [2020-12-09 07:05:32,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:05:32,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-09 07:05:32,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184789891] [2020-12-09 07:05:32,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 07:05:32,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:05:32,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 07:05:32,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 07:05:32,852 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 10 states. [2020-12-09 07:05:32,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:05:32,998 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-12-09 07:05:32,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 07:05:32,999 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2020-12-09 07:05:32,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:05:33,000 INFO L225 Difference]: With dead ends: 48 [2020-12-09 07:05:33,000 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 07:05:33,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2020-12-09 07:05:33,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 07:05:33,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2020-12-09 07:05:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 07:05:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 07:05:33,008 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 7 [2020-12-09 07:05:33,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:05:33,008 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 07:05:33,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 07:05:33,009 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 07:05:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 07:05:33,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:05:33,009 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 07:05:33,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 07:05:33,212 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:05:33,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:05:33,214 INFO L82 PathProgramCache]: Analyzing trace with hash 874023160, now seen corresponding path program 1 times [2020-12-09 07:05:33,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:05:33,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794880932] [2020-12-09 07:05:33,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:05:33,250 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:05:33,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279148829] [2020-12-09 07:05:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:05:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:05:33,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-09 07:05:33,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:05:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:05:33,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:05:33,503 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 07:05:33,504 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 07:05:39,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:05:39,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794880932] [2020-12-09 07:05:39,755 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:05:39,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279148829] [2020-12-09 07:05:39,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2033054024] [2020-12-09 07:05:39,769 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 07:05:39,770 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:05:39,773 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:05:39,776 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:05:39,777 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:05:40,387 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:05:41,022 WARN L197 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2020-12-09 07:05:41,517 WARN L197 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2020-12-09 07:05:41,925 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 105 [2020-12-09 07:05:42,312 WARN L197 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 101 [2020-12-09 07:05:42,725 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:05:42,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 07:05:42,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 07:05:42,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025874093] [2020-12-09 07:05:42,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 07:05:42,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:05:42,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 07:05:42,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=338, Unknown=3, NotChecked=0, Total=420 [2020-12-09 07:05:42,726 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 12 states. [2020-12-09 07:06:41,422 WARN L197 SmtUtils]: Spent 58.59 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-09 07:06:47,690 WARN L197 SmtUtils]: Spent 6.23 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 07:06:53,761 WARN L197 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 27 [2020-12-09 07:08:24,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:24,761 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2020-12-09 07:08:24,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 07:08:24,762 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-12-09 07:08:24,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:24,762 INFO L225 Difference]: With dead ends: 79 [2020-12-09 07:08:24,762 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 07:08:24,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 98.3s TimeCoverageRelationStatistics Valid=184, Invalid=674, Unknown=12, NotChecked=0, Total=870 [2020-12-09 07:08:24,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 07:08:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-12-09 07:08:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-09 07:08:24,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-12-09 07:08:24,769 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 17 [2020-12-09 07:08:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:24,769 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-12-09 07:08:24,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 07:08:24,769 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-12-09 07:08:24,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-09 07:08:24,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:24,770 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2020-12-09 07:08:24,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:08:24,972 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:24,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:24,974 INFO L82 PathProgramCache]: Analyzing trace with hash 2062983086, now seen corresponding path program 2 times [2020-12-09 07:08:24,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:08:24,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219647870] [2020-12-09 07:08:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:08:25,005 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:08:25,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106756008] [2020-12-09 07:08:25,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:08:25,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-12-09 07:08:25,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 07:08:25,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 07:08:25,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:08:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-09 07:08:25,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:08:36,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219647870] [2020-12-09 07:08:36,696 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:08:36,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106756008] [2020-12-09 07:08:36,696 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-09 07:08:36,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2045113855] [2020-12-09 07:08:36,698 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 07:08:36,698 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:08:36,698 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:08:36,698 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:08:36,698 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:08:37,131 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:08:37,692 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2020-12-09 07:08:38,194 WARN L197 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2020-12-09 07:08:38,623 WARN L197 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 105 [2020-12-09 07:08:39,075 WARN L197 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 101 [2020-12-09 07:08:39,549 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:08:39,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:08:39,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 07:08:39,549 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 07:08:39,549 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 07:08:39,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-12-09 07:08:39,766 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 07:08:39,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:08:39 BoogieIcfgContainer [2020-12-09 07:08:39,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:08:39,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:08:39,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:08:39,767 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:08:39,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:05:32" (3/4) ... [2020-12-09 07:08:39,769 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 07:08:39,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:08:39,770 INFO L168 Benchmark]: Toolchain (without parser) took 187965.47 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 72.6 MB in the beginning and 99.1 MB in the end (delta: -26.5 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-12-09 07:08:39,771 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 111.1 MB. Free memory is still 88.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:08:39,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.01 ms. Allocated memory is still 111.1 MB. Free memory was 72.4 MB in the beginning and 87.1 MB in the end (delta: -14.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:08:39,771 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.59 ms. Allocated memory is still 111.1 MB. Free memory was 87.1 MB in the beginning and 85.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:08:39,772 INFO L168 Benchmark]: Boogie Preprocessor took 15.07 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 84.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:08:39,772 INFO L168 Benchmark]: RCFGBuilder took 234.58 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 68.2 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 07:08:39,772 INFO L168 Benchmark]: TraceAbstraction took 187515.27 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 67.9 MB in the beginning and 99.1 MB in the end (delta: -31.2 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:08:39,773 INFO L168 Benchmark]: Witness Printer took 2.40 ms. Allocated memory is still 144.7 MB. Free memory is still 99.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:08:39,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 111.1 MB. Free memory is still 88.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 170.01 ms. Allocated memory is still 111.1 MB. Free memory was 72.4 MB in the beginning and 87.1 MB in the end (delta: -14.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.59 ms. Allocated memory is still 111.1 MB. Free memory was 87.1 MB in the beginning and 85.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.07 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 84.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 234.58 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 68.2 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 187515.27 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 67.9 MB in the beginning and 99.1 MB in the end (delta: -31.2 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Witness Printer took 2.40 ms. Allocated memory is still 144.7 MB. Free memory is still 99.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] int counter = 0; [L22] int n; [L23] long long a, s, t; [L24] n = __VERIFIER_nondet_int() [L26] a = 0 [L27] s = 1 [L28] t = 1 [L30] EXPR counter++ [L30] COND TRUE counter++<5 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<5 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<5 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<5 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<5 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 187.4s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 162.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 189 SDslu, 62 SDs, 0 SdLazy, 163 SolverSat, 165 SolverUnsat, 27 SolverUnknown, 0 SolverNotchecked, 72.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 98.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 7620 SizeOfPredicates, 12 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/14 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 07:08:41,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:08:41,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:08:41,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:08:41,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:08:41,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:08:41,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:08:41,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:08:41,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:08:41,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:08:41,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:08:41,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:08:41,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:08:41,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:08:41,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:08:41,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:08:41,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:08:41,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:08:41,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:08:41,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:08:41,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:08:41,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:08:41,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:08:41,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:08:41,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:08:41,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:08:41,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:08:41,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:08:41,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:08:41,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:08:41,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:08:41,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:08:41,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:08:41,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:08:41,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:08:41,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:08:41,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:08:41,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:08:41,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:08:41,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:08:41,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:08:41,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 07:08:41,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:08:41,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:08:41,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:08:41,374 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:08:41,374 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:08:41,374 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:08:41,374 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:08:41,375 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:08:41,375 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:08:41,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:08:41,375 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:08:41,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:08:41,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:08:41,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:08:41,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:08:41,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:08:41,376 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:08:41,376 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 07:08:41,376 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 07:08:41,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:08:41,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:08:41,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:08:41,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:08:41,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:08:41,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 07:08:41,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:08:41,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:08:41,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:08:41,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:08:41,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:08:41,377 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 07:08:41,378 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 07:08:41,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:08:41,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:08:41,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:08:41,378 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-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32b43cd88a17bb2f94fc5ece2031f89d5133ff9b [2020-12-09 07:08:41,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:08:41,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:08:41,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:08:41,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:08:41,643 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:08:41,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c [2020-12-09 07:08:41,686 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/data/e04c14adb/0860cbfd296e489ca60616fa8eb8db70/FLAG1f8f5b41e [2020-12-09 07:08:42,077 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:08:42,077 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c [2020-12-09 07:08:42,083 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/data/e04c14adb/0860cbfd296e489ca60616fa8eb8db70/FLAG1f8f5b41e [2020-12-09 07:08:42,093 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/data/e04c14adb/0860cbfd296e489ca60616fa8eb8db70 [2020-12-09 07:08:42,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:08:42,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:08:42,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:08:42,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:08:42,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:08:42,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:08:42" (1/1) ... [2020-12-09 07:08:42,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15bf28dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:42, skipping insertion in model container [2020-12-09 07:08:42,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:08:42" (1/1) ... [2020-12-09 07:08:42,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:08:42,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:08:42,227 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c[520,533] [2020-12-09 07:08:42,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:08:42,253 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:08:42,269 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c[520,533] [2020-12-09 07:08:42,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:08:42,296 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:08:42,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:42 WrapperNode [2020-12-09 07:08:42,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:08:42,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:08:42,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:08:42,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:08:42,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:42" (1/1) ... [2020-12-09 07:08:42,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:42" (1/1) ... [2020-12-09 07:08:42,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:08:42,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:08:42,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:08:42,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:08:42,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:42" (1/1) ... [2020-12-09 07:08:42,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:42" (1/1) ... [2020-12-09 07:08:42,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:42" (1/1) ... [2020-12-09 07:08:42,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:42" (1/1) ... [2020-12-09 07:08:42,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:42" (1/1) ... [2020-12-09 07:08:42,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:42" (1/1) ... [2020-12-09 07:08:42,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:42" (1/1) ... [2020-12-09 07:08:42,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:08:42,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:08:42,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:08:42,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:08:42,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:08:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 07:08:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:08:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:08:42,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:08:42,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:08:42,835 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 07:08:42,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:08:42 BoogieIcfgContainer [2020-12-09 07:08:42,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:08:42,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:08:42,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:08:42,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:08:42,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:08:42" (1/3) ... [2020-12-09 07:08:42,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b72c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:08:42, skipping insertion in model container [2020-12-09 07:08:42,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:42" (2/3) ... [2020-12-09 07:08:42,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b72c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:08:42, skipping insertion in model container [2020-12-09 07:08:42,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:08:42" (3/3) ... [2020-12-09 07:08:42,845 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound5.c [2020-12-09 07:08:42,858 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:08:42,861 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 07:08:42,869 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 07:08:42,887 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:08:42,888 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:08:42,888 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:08:42,888 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:08:42,888 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:08:42,888 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:08:42,888 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:08:42,888 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:08:42,897 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-09 07:08:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 07:08:42,901 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:42,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 07:08:42,902 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:42,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:42,908 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-09 07:08:42,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:08:42,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429435095] [2020-12-09 07:08:42,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 07:08:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:42,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 07:08:42,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:08:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:42,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:08:42,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429435095] [2020-12-09 07:08:42,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:08:42,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:08:42,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890773315] [2020-12-09 07:08:42,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 07:08:42,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:08:43,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 07:08:43,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:08:43,011 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-09 07:08:43,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:43,029 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-09 07:08:43,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 07:08:43,030 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 07:08:43,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:43,037 INFO L225 Difference]: With dead ends: 62 [2020-12-09 07:08:43,037 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 07:08:43,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:08:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 07:08:43,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 07:08:43,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 07:08:43,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-09 07:08:43,065 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-09 07:08:43,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:43,065 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-09 07:08:43,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 07:08:43,066 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-09 07:08:43,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 07:08:43,066 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:43,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 07:08:43,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 07:08:43,267 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:43,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:43,268 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-09 07:08:43,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:08:43,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146205230] [2020-12-09 07:08:43,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 07:08:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:43,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 07:08:43,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:08:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:43,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:08:43,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146205230] [2020-12-09 07:08:43,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:08:43,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:08:43,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143674293] [2020-12-09 07:08:43,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:08:43,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:08:43,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:08:43,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:08:43,366 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-12-09 07:08:43,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:43,822 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-12-09 07:08:43,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:08:43,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 07:08:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:43,829 INFO L225 Difference]: With dead ends: 54 [2020-12-09 07:08:43,829 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 07:08:43,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:08:43,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 07:08:43,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-12-09 07:08:43,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 07:08:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-12-09 07:08:43,836 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-12-09 07:08:43,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:43,836 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-12-09 07:08:43,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:08:43,836 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-12-09 07:08:43,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 07:08:43,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:43,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:08:44,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 07:08:44,039 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:44,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:44,041 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-09 07:08:44,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:08:44,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689672214] [2020-12-09 07:08:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 07:08:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:44,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 07:08:44,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:08:44,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:44,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:08:44,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689672214] [2020-12-09 07:08:44,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:08:44,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:08:44,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240233227] [2020-12-09 07:08:44,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:08:44,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:08:44,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:08:44,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:08:44,138 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 4 states. [2020-12-09 07:08:44,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:44,578 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-12-09 07:08:44,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:08:44,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 07:08:44,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:44,580 INFO L225 Difference]: With dead ends: 50 [2020-12-09 07:08:44,580 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 07:08:44,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:08:44,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 07:08:44,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-12-09 07:08:44,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 07:08:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-12-09 07:08:44,585 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2020-12-09 07:08:44,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:44,585 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-12-09 07:08:44,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:08:44,586 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-12-09 07:08:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 07:08:44,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:44,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:08:44,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 07:08:44,787 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:44,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:44,789 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-09 07:08:44,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:08:44,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104629841] [2020-12-09 07:08:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 07:08:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:44,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 07:08:44,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:08:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:44,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:08:44,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104629841] [2020-12-09 07:08:44,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:08:44,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:08:44,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298452196] [2020-12-09 07:08:44,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:08:44,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:08:44,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:08:44,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:08:44,937 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-12-09 07:08:45,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:45,437 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-12-09 07:08:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:08:45,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 07:08:45,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:45,439 INFO L225 Difference]: With dead ends: 50 [2020-12-09 07:08:45,439 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 07:08:45,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:08:45,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 07:08:45,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-12-09 07:08:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 07:08:45,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-09 07:08:45,444 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 10 [2020-12-09 07:08:45,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:45,444 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-09 07:08:45,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:08:45,444 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-09 07:08:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 07:08:45,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:45,445 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:08:45,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 07:08:45,646 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:45,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:45,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1265507748, now seen corresponding path program 1 times [2020-12-09 07:08:45,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:08:45,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382089005] [2020-12-09 07:08:45,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 07:08:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:45,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:08:45,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:08:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:45,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:08:45,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:08:45,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382089005] [2020-12-09 07:08:45,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [40047760] [2020-12-09 07:08:45,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt [2020-12-09 07:08:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:46,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:08:46,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:08:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:46,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:08:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:08:46,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266314744] [2020-12-09 07:08:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:08:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:46,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 07:08:46,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:08:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:46,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:08:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:46,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 07:08:46,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 6, 5] total 9 [2020-12-09 07:08:46,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129089056] [2020-12-09 07:08:46,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 07:08:46,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:08:46,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 07:08:46,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-09 07:08:46,492 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 9 states. [2020-12-09 07:08:47,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:47,282 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-09 07:08:47,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 07:08:47,283 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-09 07:08:47,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:47,284 INFO L225 Difference]: With dead ends: 58 [2020-12-09 07:08:47,284 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 07:08:47,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-12-09 07:08:47,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 07:08:47,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 32. [2020-12-09 07:08:47,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 07:08:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-12-09 07:08:47,289 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 14 [2020-12-09 07:08:47,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:47,289 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-12-09 07:08:47,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 07:08:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-12-09 07:08:47,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 07:08:47,290 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:47,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:08:47,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:08:47,892 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:47,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:47,894 INFO L82 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2020-12-09 07:08:47,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:08:47,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972455457] [2020-12-09 07:08:47,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 07:08:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:48,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 07:08:48,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:08:48,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:48,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:08:48,786 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-09 07:08:49,437 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 07:08:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:49,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972455457] [2020-12-09 07:08:49,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1621407370] [2020-12-09 07:08:49,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt [2020-12-09 07:08:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:49,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 07:08:49,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:08:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:49,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:08:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:49,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697917463] [2020-12-09 07:08:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:08:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:49,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 07:08:49,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:08:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:50,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:08:50,803 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 07:08:50,812 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 07:08:50,812 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 07:08:53,775 WARN L197 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 07:09:00,707 WARN L197 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 07:09:09,652 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 07:09:09,658 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 07:09:09,659 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 07:09:12,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 07:09:12,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 07:09:12,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 8, 8] total 15 [2020-12-09 07:09:12,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300235728] [2020-12-09 07:09:12,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-09 07:09:12,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:09:12,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-09 07:09:12,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=135, Unknown=8, NotChecked=0, Total=210 [2020-12-09 07:09:12,350 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 15 states. [2020-12-09 07:09:23,193 WARN L197 SmtUtils]: Spent 8.82 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-09 07:09:37,155 WARN L197 SmtUtils]: Spent 8.72 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 07:09:52,127 WARN L197 SmtUtils]: Spent 9.36 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 07:10:17,368 WARN L197 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 07:10:45,679 WARN L197 SmtUtils]: Spent 12.43 s on a formula simplification that was a NOOP. DAG size: 31 [2020-12-09 07:10:59,260 WARN L197 SmtUtils]: Spent 8.46 s on a formula simplification that was a NOOP. DAG size: 32 [2020-12-09 07:11:16,456 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-09 07:11:36,208 WARN L197 SmtUtils]: Spent 8.39 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 07:11:50,448 WARN L197 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-12-09 07:12:09,903 WARN L197 SmtUtils]: Spent 10.56 s on a formula simplification that was a NOOP. DAG size: 32 [2020-12-09 07:12:16,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:12:16,203 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2020-12-09 07:12:16,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 07:12:16,211 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-12-09 07:12:16,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:12:16,211 INFO L225 Difference]: With dead ends: 75 [2020-12-09 07:12:16,212 INFO L226 Difference]: Without dead ends: 61 [2020-12-09 07:12:16,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 131.8s TimeCoverageRelationStatistics Valid=217, Invalid=409, Unknown=24, NotChecked=0, Total=650 [2020-12-09 07:12:16,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-09 07:12:16,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 36. [2020-12-09 07:12:16,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 07:12:16,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-09 07:12:16,219 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 16 [2020-12-09 07:12:16,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:12:16,219 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-09 07:12:16,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-09 07:12:16,219 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-09 07:12:16,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 07:12:16,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:12:16,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-09 07:12:16,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:12:16,823 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:12:16,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:12:16,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 1 times [2020-12-09 07:12:16,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:12:16,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715902870] [2020-12-09 07:12:16,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 07:12:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:12:17,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 07:12:17,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:12:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:12:17,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:12:18,174 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 07:12:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 07:12:19,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715902870] [2020-12-09 07:12:19,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [625047694] [2020-12-09 07:12:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt [2020-12-09 07:12:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:12:19,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 07:12:19,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:12:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:12:19,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:12:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 07:12:21,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411176522] [2020-12-09 07:12:21,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:12:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:12:21,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 07:12:21,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:12:22,449 WARN L197 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 22 [2020-12-09 07:12:22,740 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-09 07:12:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:12:22,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:12:24,079 WARN L197 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 07:12:24,084 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 07:12:24,084 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 07:12:28,833 WARN L197 SmtUtils]: Spent 2.42 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 07:12:35,247 WARN L197 SmtUtils]: Spent 4.29 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 07:12:35,253 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 07:12:35,254 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 07:12:37,477 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv2 32)))) (or (not (= c_ULTIMATE.start_main_~s~0 (bvadd (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (_ bv2 64) (bvmul .cse0 c_ULTIMATE.start_main_~a~0))))) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) c_ULTIMATE.start_main_~s~0)) (bvmul c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) (bvmul c_ULTIMATE.start_main_~t~0 .cse1) .cse0)) (not (= (bvadd .cse0 (bvmul c_ULTIMATE.start_main_~a~0 .cse1)) c_ULTIMATE.start_main_~t~0)))) is different from true [2020-12-09 07:12:37,494 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 07:12:37,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2020-12-09 07:12:37,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 4, 6, 4, 11] total 19 [2020-12-09 07:12:37,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276316301] [2020-12-09 07:12:37,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:12:37,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:12:37,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:12:37,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=209, Unknown=1, NotChecked=32, Total=342 [2020-12-09 07:12:37,495 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2020-12-09 07:12:39,558 WARN L197 SmtUtils]: Spent 887.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 07:13:00,877 WARN L197 SmtUtils]: Spent 10.07 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 07:13:08,887 WARN L197 SmtUtils]: Spent 4.80 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 07:13:15,731 WARN L197 SmtUtils]: Spent 4.99 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 07:13:21,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:13:21,376 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-12-09 07:13:21,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 07:13:21,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-09 07:13:21,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:13:21,377 INFO L225 Difference]: With dead ends: 44 [2020-12-09 07:13:21,377 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 07:13:21,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 124 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 52.0s TimeCoverageRelationStatistics Valid=147, Invalid=316, Unknown=3, NotChecked=40, Total=506 [2020-12-09 07:13:21,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 07:13:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-12-09 07:13:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 07:13:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-12-09 07:13:21,384 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2020-12-09 07:13:21,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:13:21,384 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-12-09 07:13:21,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:13:21,384 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-12-09 07:13:21,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 07:13:21,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:13:21,385 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:13:21,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 cvc4 --incremental --print-success --lang smt,12 mathsat -unsat_core_generation=3 [2020-12-09 07:13:21,986 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:13:21,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:13:21,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1772370605, now seen corresponding path program 1 times [2020-12-09 07:13:21,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:13:21,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576472059] [2020-12-09 07:13:21,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-09 07:13:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:13:22,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:13:22,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:13:22,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:13:22,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:13:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:13:22,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576472059] [2020-12-09 07:13:22,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1561621241] [2020-12-09 07:13:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt [2020-12-09 07:13:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:13:22,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:13:22,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:13:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:13:22,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:13:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:13:22,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880151553] [2020-12-09 07:13:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a0501b4b-b8d9-4bfa-87cd-e8906ef8531c/bin/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:13:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:13:23,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-09 07:13:23,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:13:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:13:24,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:13:27,209 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 07:13:29,108 WARN L197 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 07:13:29,113 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 07:13:29,113 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 07:13:37,573 WARN L197 SmtUtils]: Spent 2.98 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 07:13:46,483 WARN L197 SmtUtils]: Spent 4.25 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 07:13:46,489 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 07:13:46,489 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 07:13:48,684 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv2 32)))) (or (not (= c_ULTIMATE.start_main_~s~0 (bvadd (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (_ bv2 64) (bvmul .cse0 c_ULTIMATE.start_main_~a~0))))) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) c_ULTIMATE.start_main_~s~0)) (bvmul c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) (bvmul c_ULTIMATE.start_main_~t~0 .cse1) .cse0)) (not (= (bvadd .cse0 (bvmul c_ULTIMATE.start_main_~a~0 .cse1)) c_ULTIMATE.start_main_~t~0)))) is different from true [2020-12-09 07:13:48,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 07:13:48,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2020-12-09 07:13:48,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 5, 5, 5, 11] total 25 [2020-12-09 07:13:48,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193318317] [2020-12-09 07:13:48,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:13:48,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:13:48,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:13:48,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=445, Unknown=1, NotChecked=44, Total=600 [2020-12-09 07:13:48,709 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 8 states. [2020-12-09 07:13:51,313 WARN L197 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 07:14:12,791 WARN L197 SmtUtils]: Spent 10.19 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 07:14:22,610 WARN L197 SmtUtils]: Spent 5.35 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 07:14:32,664 WARN L197 SmtUtils]: Spent 3.70 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 07:14:33,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:14:33,799 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-12-09 07:14:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 07:14:33,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-12-09 07:14:33,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:14:33,808 INFO L225 Difference]: With dead ends: 28 [2020-12-09 07:14:33,808 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 07:14:33,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 132 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 62.1s TimeCoverageRelationStatistics Valid=155, Invalid=602, Unknown=3, NotChecked=52, Total=812 [2020-12-09 07:14:33,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 07:14:33,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 07:14:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 07:14:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 07:14:33,809 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-12-09 07:14:33,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:14:33,809 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 07:14:33,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:14:33,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 07:14:33,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 07:14:34,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt,15 mathsat -unsat_core_generation=3,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:14:34,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 07:15:08,923 WARN L197 SmtUtils]: Spent 34.38 s on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2020-12-09 07:15:39,717 WARN L197 SmtUtils]: Spent 30.79 s on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2020-12-09 07:16:00,098 WARN L197 SmtUtils]: Spent 20.38 s on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-12-09 07:16:40,155 WARN L197 SmtUtils]: Spent 40.06 s on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-12-09 07:16:57,850 WARN L197 SmtUtils]: Spent 17.69 s on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-12-09 07:17:46,354 WARN L197 SmtUtils]: Spent 48.50 s on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-12-09 07:17:46,356 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 07:17:46,356 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 07:17:46,356 INFO L265 CegarLoopResult]: At program point L48(lines 21 49) the Hoare annotation is: true [2020-12-09 07:17:46,357 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 07:17:46,357 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 07:17:46,357 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 07:17:46,357 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 07:17:46,357 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 07:17:46,357 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-09 07:17:46,357 INFO L258 CegarLoopResult]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 07:17:46,357 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-09 07:17:46,357 INFO L258 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 07:17:46,357 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-09 07:17:46,358 INFO L258 CegarLoopResult]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 07:17:46,358 INFO L262 CegarLoopResult]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-09 07:17:46,358 INFO L258 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= .cse1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse2)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= .cse1 (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 07:17:46,358 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 07:17:46,358 INFO L262 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-09 07:17:46,358 INFO L258 CegarLoopResult]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse1 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse1) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 07:17:46,358 INFO L262 CegarLoopResult]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-09 07:17:46,358 INFO L265 CegarLoopResult]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-12-09 07:17:46,358 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 07:17:46,359 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-09 07:17:46,359 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-09 07:17:46,359 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-09 07:17:46,359 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-09 07:17:46,359 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-09 07:17:46,359 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-09 07:17:46,359 INFO L262 CegarLoopResult]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-12-09 07:17:46,359 INFO L258 CegarLoopResult]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= .cse1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse2)) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= .cse1 (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 07:17:46,359 INFO L262 CegarLoopResult]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-12-09 07:17:46,359 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 07:17:46,364 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:796) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:240) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 07:17:46,366 INFO L168 Benchmark]: Toolchain (without parser) took 544269.23 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 44.6 MB in the beginning and 54.8 MB in the end (delta: -10.2 MB). Peak memory consumption was 43.8 MB. Max. memory is 16.1 GB. [2020-12-09 07:17:46,367 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 46.1 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:17:46,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.92 ms. Allocated memory is still 62.9 MB. Free memory was 44.4 MB in the beginning and 46.8 MB in the end (delta: -2.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:17:46,368 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.42 ms. Allocated memory is still 62.9 MB. Free memory was 46.6 MB in the beginning and 45.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:17:46,368 INFO L168 Benchmark]: Boogie Preprocessor took 25.01 ms. Allocated memory is still 62.9 MB. Free memory was 45.0 MB in the beginning and 43.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:17:46,368 INFO L168 Benchmark]: RCFGBuilder took 482.81 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 43.7 MB in the beginning and 64.9 MB in the end (delta: -21.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-12-09 07:17:46,369 INFO L168 Benchmark]: TraceAbstraction took 543527.72 ms. Allocated memory is still 81.8 MB. Free memory was 64.5 MB in the beginning and 54.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. [2020-12-09 07:17:46,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 46.1 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 198.92 ms. Allocated memory is still 62.9 MB. Free memory was 44.4 MB in the beginning and 46.8 MB in the end (delta: -2.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.42 ms. Allocated memory is still 62.9 MB. Free memory was 46.6 MB in the beginning and 45.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.01 ms. Allocated memory is still 62.9 MB. Free memory was 45.0 MB in the beginning and 43.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 482.81 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 43.7 MB in the beginning and 64.9 MB in the end (delta: -21.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 543527.72 ms. Allocated memory is still 81.8 MB. Free memory was 64.5 MB in the beginning and 54.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...