./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound1.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_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 8bc7ea9594894bce31579a47be3b0c06f18caebb .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 8bc7ea9594894bce31579a47be3b0c06f18caebb .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:19:58,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:19:58,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:19:58,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:19:58,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:19:58,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:19:58,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:19:58,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:19:58,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:19:58,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:19:58,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:19:58,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:19:58,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:19:58,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:19:58,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:19:58,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:19:58,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:19:58,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:19:58,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:19:58,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:19:58,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:19:58,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:19:58,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:19:58,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:19:58,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:19:58,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:19:58,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:19:58,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:19:58,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:19:58,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:19:58,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:19:58,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:19:58,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:19:58,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:19:58,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:19:58,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:19:58,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:19:58,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:19:58,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:19:58,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:19:58,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:19:58,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:19:58,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:19:58,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:19:58,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:19:58,198 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:19:58,198 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:19:58,199 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:19:58,199 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:19:58,199 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:19:58,199 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:19:58,199 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:19:58,199 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:19:58,200 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:19:58,200 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:19:58,200 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:19:58,200 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:19:58,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:19:58,201 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:19:58,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:19:58,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:19:58,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:19:58,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:19:58,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:19:58,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:19:58,202 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:19:58,203 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:19:58,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:19:58,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:19:58,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:19:58,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:19:58,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:19:58,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:19:58,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:19:58,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:19:58,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:19:58,204 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:19:58,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:19:58,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:19:58,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:19:58,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:19:58,205 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_4eb74b53-c160-416f-8f39-ad802fa49b2e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bc7ea9594894bce31579a47be3b0c06f18caebb [2020-12-09 06:19:58,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:19:58,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:19:58,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:19:58,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:19:58,412 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:19:58,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound1.c [2020-12-09 06:19:58,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/data/002654d7e/43afb9392fd94a3192c482599c3194e4/FLAG0365d5332 [2020-12-09 06:19:58,821 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:19:58,822 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound1.c [2020-12-09 06:19:58,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/data/002654d7e/43afb9392fd94a3192c482599c3194e4/FLAG0365d5332 [2020-12-09 06:19:58,836 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/data/002654d7e/43afb9392fd94a3192c482599c3194e4 [2020-12-09 06:19:58,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:19:58,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:19:58,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:19:58,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:19:58,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:19:58,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:19:58" (1/1) ... [2020-12-09 06:19:58,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eda33c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:58, skipping insertion in model container [2020-12-09 06:19:58,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:19:58" (1/1) ... [2020-12-09 06:19:58,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:19:58,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:19:58,976 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_4eb74b53-c160-416f-8f39-ad802fa49b2e/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound1.c[525,538] [2020-12-09 06:19:58,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:19:59,001 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:19:59,009 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_4eb74b53-c160-416f-8f39-ad802fa49b2e/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound1.c[525,538] [2020-12-09 06:19:59,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:19:59,030 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:19:59,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:59 WrapperNode [2020-12-09 06:19:59,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:19:59,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:19:59,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:19:59,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:19:59,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:59" (1/1) ... [2020-12-09 06:19:59,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:59" (1/1) ... [2020-12-09 06:19:59,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:19:59,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:19:59,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:19:59,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:19:59,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:59" (1/1) ... [2020-12-09 06:19:59,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:59" (1/1) ... [2020-12-09 06:19:59,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:59" (1/1) ... [2020-12-09 06:19:59,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:59" (1/1) ... [2020-12-09 06:19:59,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:59" (1/1) ... [2020-12-09 06:19:59,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:59" (1/1) ... [2020-12-09 06:19:59,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:59" (1/1) ... [2020-12-09 06:19:59,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:19:59,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:19:59,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:19:59,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:19:59,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:19:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:19:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:19:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:19:59,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:20:01,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:20:01,488 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2020-12-09 06:20:01,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:20:01 BoogieIcfgContainer [2020-12-09 06:20:01,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:20:01,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:20:01,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:20:01,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:20:01,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:19:58" (1/3) ... [2020-12-09 06:20:01,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1437ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:20:01, skipping insertion in model container [2020-12-09 06:20:01,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:59" (2/3) ... [2020-12-09 06:20:01,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1437ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:20:01, skipping insertion in model container [2020-12-09 06:20:01,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:20:01" (3/3) ... [2020-12-09 06:20:01,496 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound1.c [2020-12-09 06:20:01,506 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:20:01,508 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-09 06:20:01,515 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-09 06:20:01,531 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:20:01,532 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:20:01,532 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:20:01,532 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:20:01,532 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:20:01,532 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:20:01,532 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:20:01,532 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:20:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-12-09 06:20:01,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 06:20:01,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:20:01,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 06:20:01,546 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:20:01,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:20:01,550 INFO L82 PathProgramCache]: Analyzing trace with hash 188617841, now seen corresponding path program 1 times [2020-12-09 06:20:01,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:20:01,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163371374] [2020-12-09 06:20:01,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:20:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:01,647 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 06:20:01,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163371374] [2020-12-09 06:20:01,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:20:01,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:20:01,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851176471] [2020-12-09 06:20:01,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 06:20:01,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:20:01,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 06:20:01,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 06:20:01,663 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-12-09 06:20:01,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:20:01,675 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2020-12-09 06:20:01,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 06:20:01,676 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 06:20:01,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:20:01,681 INFO L225 Difference]: With dead ends: 81 [2020-12-09 06:20:01,681 INFO L226 Difference]: Without dead ends: 40 [2020-12-09 06:20:01,683 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 06:20:01,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-09 06:20:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-12-09 06:20:01,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 06:20:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-12-09 06:20:01,707 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 5 [2020-12-09 06:20:01,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:20:01,707 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-12-09 06:20:01,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 06:20:01,707 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-12-09 06:20:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 06:20:01,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:20:01,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 06:20:01,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:20:01,708 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:20:01,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:20:01,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1426196737, now seen corresponding path program 1 times [2020-12-09 06:20:01,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:20:01,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795488890] [2020-12-09 06:20:01,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:20:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:01,885 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 06:20:01,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795488890] [2020-12-09 06:20:01,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:20:01,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:20:01,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776374250] [2020-12-09 06:20:01,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:20:01,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:20:01,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:20:01,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:20:01,888 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 5 states. [2020-12-09 06:20:07,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:20:07,329 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2020-12-09 06:20:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 06:20:07,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-09 06:20:07,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:20:07,330 INFO L225 Difference]: With dead ends: 56 [2020-12-09 06:20:07,330 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 06:20:07,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:20:07,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 06:20:07,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2020-12-09 06:20:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-09 06:20:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-12-09 06:20:07,337 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 6 [2020-12-09 06:20:07,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:20:07,337 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-12-09 06:20:07,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:20:07,337 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-12-09 06:20:07,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 06:20:07,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:20:07,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:20:07,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:20:07,338 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:20:07,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:20:07,338 INFO L82 PathProgramCache]: Analyzing trace with hash 480653316, now seen corresponding path program 1 times [2020-12-09 06:20:07,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:20:07,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437625893] [2020-12-09 06:20:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:20:07,350 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 06:20:07,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575398265] [2020-12-09 06:20:07,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:20:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:07,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 06:20:07,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:20:07,446 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 06:20:07,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:20:07,563 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 06:20:07,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437625893] [2020-12-09 06:20:07,564 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:20:07,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575398265] [2020-12-09 06:20:07,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:20:07,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 06:20:07,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471755040] [2020-12-09 06:20:07,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 06:20:07,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:20:07,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 06:20:07,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:20:07,565 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 6 states. [2020-12-09 06:20:21,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:20:21,286 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-12-09 06:20:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 06:20:21,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-09 06:20:21,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:20:21,288 INFO L225 Difference]: With dead ends: 82 [2020-12-09 06:20:21,288 INFO L226 Difference]: Without dead ends: 66 [2020-12-09 06:20:21,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 06:20:21,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-09 06:20:21,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2020-12-09 06:20:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-09 06:20:21,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2020-12-09 06:20:21,295 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 8 [2020-12-09 06:20:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:20:21,295 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2020-12-09 06:20:21,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 06:20:21,295 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2020-12-09 06:20:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 06:20:21,295 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:20:21,295 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-12-09 06:20:21,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 06:20:21,497 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:20:21,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:20:21,498 INFO L82 PathProgramCache]: Analyzing trace with hash 522498748, now seen corresponding path program 1 times [2020-12-09 06:20:21,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:20:21,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650006282] [2020-12-09 06:20:21,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:20:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:21,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650006282] [2020-12-09 06:20:21,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969165368] [2020-12-09 06:20:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:20:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:21,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 06:20:21,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:20:21,790 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:20:21,793 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 06:20:21,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:21,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:20:21,833 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:20:21,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:21,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1724800827] [2020-12-09 06:20:21,908 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 06:20:21,908 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:20:21,911 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:20:21,915 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:20:21,915 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:20:22,140 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 06:20:22,784 WARN L197 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 69 [2020-12-09 06:20:23,418 WARN L197 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2020-12-09 06:20:24,088 WARN L197 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 82 [2020-12-09 06:20:24,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 06:20:24,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4, 4] total 13 [2020-12-09 06:20:24,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449005095] [2020-12-09 06:20:24,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:20:24,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:20:24,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:20:24,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-12-09 06:20:24,091 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 5 states. [2020-12-09 06:20:29,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:20:29,186 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2020-12-09 06:20:29,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:20:29,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 06:20:29,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:20:29,193 INFO L225 Difference]: With dead ends: 113 [2020-12-09 06:20:29,194 INFO L226 Difference]: Without dead ends: 57 [2020-12-09 06:20:29,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-12-09 06:20:29,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-09 06:20:29,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-12-09 06:20:29,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 06:20:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-12-09 06:20:29,201 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 8 [2020-12-09 06:20:29,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:20:29,201 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-12-09 06:20:29,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:20:29,201 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-12-09 06:20:29,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 06:20:29,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:20:29,202 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:20:29,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:20:29,403 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:20:29,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:20:29,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1443932613, now seen corresponding path program 1 times [2020-12-09 06:20:29,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:20:29,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070759839] [2020-12-09 06:20:29,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:20:29,435 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 06:20:29,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879231878] [2020-12-09 06:20:29,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:20:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:29,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 06:20:29,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:20:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:29,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:20:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:29,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070759839] [2020-12-09 06:20:29,519 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:20:29,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879231878] [2020-12-09 06:20:29,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:20:29,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2020-12-09 06:20:29,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363476982] [2020-12-09 06:20:29,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:20:29,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:20:29,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:20:29,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:20:29,521 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 5 states. [2020-12-09 06:20:36,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:20:36,146 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2020-12-09 06:20:36,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:20:36,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-09 06:20:36,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:20:36,147 INFO L225 Difference]: With dead ends: 105 [2020-12-09 06:20:36,147 INFO L226 Difference]: Without dead ends: 55 [2020-12-09 06:20:36,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:20:36,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-09 06:20:36,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-09 06:20:36,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 06:20:36,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-12-09 06:20:36,154 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 19 [2020-12-09 06:20:36,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:20:36,154 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-12-09 06:20:36,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:20:36,154 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-12-09 06:20:36,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 06:20:36,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:20:36,155 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:20:36,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 06:20:36,356 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:20:36,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:20:36,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1311347808, now seen corresponding path program 1 times [2020-12-09 06:20:36,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:20:36,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578627206] [2020-12-09 06:20:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:20:36,372 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 06:20:36,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771134128] [2020-12-09 06:20:36,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:20:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:36,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-09 06:20:36,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:20:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:36,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:20:36,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578627206] [2020-12-09 06:20:36,814 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:20:36,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771134128] [2020-12-09 06:20:36,815 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-09 06:20:36,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1777055109] [2020-12-09 06:20:36,817 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2020-12-09 06:20:36,817 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:20:36,818 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:20:36,818 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:20:36,818 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:20:37,059 FATAL L? ?]: Ignoring exception! java.lang.NullPointerException at java.base/java.util.Arrays.stream(Arrays.java:5614) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.AbstractGeneralizedAffineTerm.div(AbstractGeneralizedAffineTerm.java:395) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.constructRhsIntegerQuotient(SolveForSubjectUtils.java:456) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.ExplicitLhsPolynomialRelation.divideByIntegerCoefficient(ExplicitLhsPolynomialRelation.java:224) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubjectWithoutTreatableDivMod(SolveForSubjectUtils.java:110) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:451) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:212) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:585) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:573) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:76) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:451) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:401) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$IDerHelper.findBestReplacementSbr(DualJunctionDer.java:305) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$IDerHelper.tryToEliminateSbr(DualJunctionDer.java:319) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:223) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:190) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:174) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:141) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryToEliminate(DualJunctionDer.java:119) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:776) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:739) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:656) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:358) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.convert(QuantifierPusher.java:217) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.eliminate(QuantifierPusher.java:151) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.eliminate(QuantifierPusher.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elimPushPull(PartialQuantifierElimination.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elimPushPull(PartialQuantifierElimination.java:202) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1133) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) 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 06:20:37,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:20:37,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 06:20:37,061 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 06:20:37,062 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 06:20:37,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:20:37,268 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 06:20:37,268 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 06:20:37,268 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 06:20:37,268 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 06:20:37,269 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 06:20:37,269 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 06:20:37,276 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 06:20:37,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:20:37 BoogieIcfgContainer [2020-12-09 06:20:37,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:20:37,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:20:37,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:20:37,277 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:20:37,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:20:01" (3/4) ... [2020-12-09 06:20:37,279 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 06:20:37,279 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:20:37,280 INFO L168 Benchmark]: Toolchain (without parser) took 38440.43 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 72.7 MB in the beginning and 71.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2020-12-09 06:20:37,280 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 73.4 MB. Free memory was 49.1 MB in the beginning and 49.0 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:20:37,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.47 ms. Allocated memory is still 98.6 MB. Free memory was 72.7 MB in the beginning and 69.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 06:20:37,281 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.87 ms. Allocated memory is still 98.6 MB. Free memory was 69.2 MB in the beginning and 67.3 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:20:37,281 INFO L168 Benchmark]: Boogie Preprocessor took 18.00 ms. Allocated memory is still 98.6 MB. Free memory was 67.3 MB in the beginning and 65.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:20:37,282 INFO L168 Benchmark]: RCFGBuilder took 2412.33 ms. Allocated memory is still 98.6 MB. Free memory was 65.9 MB in the beginning and 68.4 MB in the end (delta: -2.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-12-09 06:20:37,282 INFO L168 Benchmark]: TraceAbstraction took 35784.94 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 67.8 MB in the beginning and 71.1 MB in the end (delta: -3.3 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:20:37,282 INFO L168 Benchmark]: Witness Printer took 2.61 ms. Allocated memory is still 119.5 MB. Free memory is still 71.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:20:37,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 73.4 MB. Free memory was 49.1 MB in the beginning and 49.0 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 190.47 ms. Allocated memory is still 98.6 MB. Free memory was 72.7 MB in the beginning and 69.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.87 ms. Allocated memory is still 98.6 MB. Free memory was 69.2 MB in the beginning and 67.3 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.00 ms. Allocated memory is still 98.6 MB. Free memory was 67.3 MB in the beginning and 65.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2412.33 ms. Allocated memory is still 98.6 MB. Free memory was 65.9 MB in the beginning and 68.4 MB in the end (delta: -2.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 35784.94 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 67.8 MB in the beginning and 71.1 MB in the end (delta: -3.3 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. * Witness Printer took 2.61 ms. Allocated memory is still 119.5 MB. Free memory is still 71.1 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] unsigned int n, p, q, r, h; [L22] n = __VERIFIER_nondet_uint() [L9] COND TRUE !cond [L9] COND FALSE !(!cond) [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 [L30] COND TRUE 1 [L31] COND FALSE !(!(q <= n)) [L34] q = 4 * q [L30] COND TRUE 1 [L31] COND TRUE !(q <= n) [L38] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L46] COND FALSE !(!(q != 1)) [L49] q = q / 4 [L50] h = p + q [L51] p = p / 2 [L52] COND FALSE !(r >= h) [L38] COND TRUE 1 [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 35.7s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 30.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 161 SDtfs, 124 SDslu, 163 SDs, 0 SdLazy, 148 SolverSat, 83 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 29.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=3, 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, 5 MinimizatonAttempts, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 80 ConstructedInterpolants, 5 QuantifiedInterpolants, 5910 SizeOfPredicates, 15 NumberOfNonLiveVariables, 207 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 4/10 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: OVERALL_TIME[ms]: 232, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 6, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 9, TOOLS_POST_TIME[ms]: 110, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 9, TOOLS_QUANTIFIERELIM_TIME[ms]: 107, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 97, FLUID_QUERY_TIME[ms]: 2, FLUID_QUERIES: 20, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 62, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 8, DOMAIN_ISBOTTOM_APPLICATIONS: 6, DOMAIN_ISBOTTOM_TIME[ms]: 26, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 83, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 83, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 1, PATH_EXPR_TIME[ms]: 1, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 4, DAG_COMPRESSION_PROCESSED_NODES: 43, DAG_COMPRESSION_RETAINED_NODES: 21, 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 06:20:38,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:20:38,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:20:38,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:20:38,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:20:38,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:20:38,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:20:38,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:20:38,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:20:38,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:20:38,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:20:38,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:20:38,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:20:38,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:20:38,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:20:38,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:20:38,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:20:38,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:20:38,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:20:38,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:20:38,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:20:38,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:20:38,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:20:38,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:20:38,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:20:38,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:20:38,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:20:38,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:20:38,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:20:38,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:20:38,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:20:38,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:20:38,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:20:38,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:20:38,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:20:38,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:20:38,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:20:38,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:20:38,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:20:38,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:20:38,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:20:38,853 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 06:20:38,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:20:38,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:20:38,879 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:20:38,880 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:20:38,880 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:20:38,880 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:20:38,880 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:20:38,880 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:20:38,881 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:20:38,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:20:38,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:20:38,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:20:38,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:20:38,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:20:38,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:20:38,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:20:38,883 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:20:38,883 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 06:20:38,883 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 06:20:38,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:20:38,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:20:38,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:20:38,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:20:38,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:20:38,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 06:20:38,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:20:38,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:20:38,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:20:38,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:20:38,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:20:38,885 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 06:20:38,886 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 06:20:38,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:20:38,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:20:38,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:20:38,886 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_4eb74b53-c160-416f-8f39-ad802fa49b2e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bc7ea9594894bce31579a47be3b0c06f18caebb [2020-12-09 06:20:39,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:20:39,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:20:39,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:20:39,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:20:39,139 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:20:39,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound1.c [2020-12-09 06:20:39,182 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/data/6fb6ffea8/99a5f2990407427c825ee8fda6eecd28/FLAG8117636d3 [2020-12-09 06:20:39,551 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:20:39,551 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound1.c [2020-12-09 06:20:39,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/data/6fb6ffea8/99a5f2990407427c825ee8fda6eecd28/FLAG8117636d3 [2020-12-09 06:20:39,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/data/6fb6ffea8/99a5f2990407427c825ee8fda6eecd28 [2020-12-09 06:20:39,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:20:39,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:20:39,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:20:39,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:20:39,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:20:39,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:20:39" (1/1) ... [2020-12-09 06:20:39,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a260af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:39, skipping insertion in model container [2020-12-09 06:20:39,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:20:39" (1/1) ... [2020-12-09 06:20:39,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:20:39,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:20:39,701 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_4eb74b53-c160-416f-8f39-ad802fa49b2e/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound1.c[525,538] [2020-12-09 06:20:39,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:20:39,740 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:20:39,753 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_4eb74b53-c160-416f-8f39-ad802fa49b2e/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound1.c[525,538] [2020-12-09 06:20:39,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:20:39,784 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:20:39,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:39 WrapperNode [2020-12-09 06:20:39,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:20:39,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:20:39,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:20:39,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:20:39,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:39" (1/1) ... [2020-12-09 06:20:39,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:39" (1/1) ... [2020-12-09 06:20:39,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:20:39,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:20:39,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:20:39,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:20:39,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:39" (1/1) ... [2020-12-09 06:20:39,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:39" (1/1) ... [2020-12-09 06:20:39,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:39" (1/1) ... [2020-12-09 06:20:39,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:39" (1/1) ... [2020-12-09 06:20:39,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:39" (1/1) ... [2020-12-09 06:20:39,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:39" (1/1) ... [2020-12-09 06:20:39,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:39" (1/1) ... [2020-12-09 06:20:39,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:20:39,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:20:39,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:20:39,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:20:39,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:20:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 06:20:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:20:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:20:39,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:20:41,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:20:41,047 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2020-12-09 06:20:41,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:20:41 BoogieIcfgContainer [2020-12-09 06:20:41,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:20:41,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:20:41,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:20:41,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:20:41,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:20:39" (1/3) ... [2020-12-09 06:20:41,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f9d42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:20:41, skipping insertion in model container [2020-12-09 06:20:41,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:20:39" (2/3) ... [2020-12-09 06:20:41,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f9d42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:20:41, skipping insertion in model container [2020-12-09 06:20:41,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:20:41" (3/3) ... [2020-12-09 06:20:41,053 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound1.c [2020-12-09 06:20:41,063 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:20:41,065 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-09 06:20:41,073 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-09 06:20:41,091 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:20:41,091 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:20:41,091 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:20:41,091 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:20:41,091 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:20:41,091 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:20:41,091 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:20:41,092 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:20:41,102 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-12-09 06:20:41,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 06:20:41,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:20:41,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:20:41,106 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:20:41,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:20:41,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1235857098, now seen corresponding path program 1 times [2020-12-09 06:20:41,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:20:41,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696050381] [2020-12-09 06:20:41,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:20:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:41,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 06:20:41,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:20:41,181 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 06:20:41,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:20:41,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696050381] [2020-12-09 06:20:41,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:20:41,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:20:41,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494963694] [2020-12-09 06:20:41,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 06:20:41,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:20:41,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 06:20:41,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 06:20:41,200 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-12-09 06:20:41,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:20:41,214 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2020-12-09 06:20:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 06:20:41,214 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 06:20:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:20:41,220 INFO L225 Difference]: With dead ends: 97 [2020-12-09 06:20:41,220 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 06:20:41,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 06:20:41,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 06:20:41,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-09 06:20:41,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-09 06:20:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-09 06:20:41,247 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 10 [2020-12-09 06:20:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:20:41,247 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-09 06:20:41,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 06:20:41,247 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-09 06:20:41,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 06:20:41,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:20:41,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:20:41,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 06:20:41,448 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:20:41,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:20:41,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1503620767, now seen corresponding path program 1 times [2020-12-09 06:20:41,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:20:41,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671839014] [2020-12-09 06:20:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:20:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:41,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 06:20:41,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:20:41,678 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:20:41,711 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 06:20:41,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:20:41,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671839014] [2020-12-09 06:20:41,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:20:41,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 06:20:41,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729071464] [2020-12-09 06:20:41,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 06:20:41,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:20:41,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 06:20:41,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:20:41,714 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 7 states. [2020-12-09 06:20:43,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:20:43,441 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2020-12-09 06:20:43,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 06:20:43,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-12-09 06:20:43,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:20:43,442 INFO L225 Difference]: With dead ends: 109 [2020-12-09 06:20:43,442 INFO L226 Difference]: Without dead ends: 67 [2020-12-09 06:20:43,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-09 06:20:43,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-09 06:20:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-12-09 06:20:43,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-09 06:20:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-12-09 06:20:43,452 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 11 [2020-12-09 06:20:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:20:43,452 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-12-09 06:20:43,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 06:20:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-12-09 06:20:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 06:20:43,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:20:43,453 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:20:43,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 06:20:43,655 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:20:43,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:20:43,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1828543716, now seen corresponding path program 1 times [2020-12-09 06:20:43,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:20:43,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077685233] [2020-12-09 06:20:43,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:20:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:43,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 06:20:43,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:20:43,828 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:20:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:43,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:20:44,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:44,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077685233] [2020-12-09 06:20:44,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1414809656] [2020-12-09 06:20:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt [2020-12-09 06:20:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:44,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 06:20:44,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:20:44,300 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:20:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:44,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:20:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:44,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669958406] [2020-12-09 06:20:44,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:20:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:44,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 06:20:44,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:20:44,774 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:20:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:44,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:20:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:44,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 06:20:44,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6, 6, 9, 6] total 20 [2020-12-09 06:20:44,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427594864] [2020-12-09 06:20:44,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-09 06:20:44,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:20:44,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-09 06:20:44,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-12-09 06:20:44,801 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 20 states. [2020-12-09 06:20:49,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:20:49,203 INFO L93 Difference]: Finished difference Result 183 states and 201 transitions. [2020-12-09 06:20:49,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 06:20:49,212 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 13 [2020-12-09 06:20:49,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:20:49,213 INFO L225 Difference]: With dead ends: 183 [2020-12-09 06:20:49,213 INFO L226 Difference]: Without dead ends: 139 [2020-12-09 06:20:49,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=298, Invalid=758, Unknown=0, NotChecked=0, Total=1056 [2020-12-09 06:20:49,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-12-09 06:20:49,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 81. [2020-12-09 06:20:49,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-09 06:20:49,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2020-12-09 06:20:49,223 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 13 [2020-12-09 06:20:49,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:20:49,223 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2020-12-09 06:20:49,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-09 06:20:49,223 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2020-12-09 06:20:49,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 06:20:49,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:20:49,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:20:49,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 cvc4 --incremental --print-success --lang smt [2020-12-09 06:20:49,827 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:20:49,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:20:49,828 INFO L82 PathProgramCache]: Analyzing trace with hash 2147482631, now seen corresponding path program 1 times [2020-12-09 06:20:49,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:20:49,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195317047] [2020-12-09 06:20:49,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 06:20:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:50,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 06:20:50,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:20:50,221 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 06:20:50,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:20:50,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195317047] [2020-12-09 06:20:50,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:20:50,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 06:20:50,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670663899] [2020-12-09 06:20:50,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 06:20:50,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:20:50,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 06:20:50,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:20:50,223 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 6 states. [2020-12-09 06:20:51,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:20:51,718 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2020-12-09 06:20:51,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 06:20:51,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-09 06:20:51,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:20:51,720 INFO L225 Difference]: With dead ends: 98 [2020-12-09 06:20:51,720 INFO L226 Difference]: Without dead ends: 79 [2020-12-09 06:20:51,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 06:20:51,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-09 06:20:51,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-12-09 06:20:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-09 06:20:51,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-12-09 06:20:51,727 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 15 [2020-12-09 06:20:51,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:20:51,728 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-12-09 06:20:51,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 06:20:51,728 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-12-09 06:20:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 06:20:51,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:20:51,728 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:20:51,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 06:20:51,930 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:20:51,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:20:51,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1165801538, now seen corresponding path program 1 times [2020-12-09 06:20:51,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:20:51,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91775859] [2020-12-09 06:20:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 06:20:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:52,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 06:20:52,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:20:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 06:20:52,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:20:52,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91775859] [2020-12-09 06:20:52,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:20:52,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 06:20:52,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736100772] [2020-12-09 06:20:52,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 06:20:52,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:20:52,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 06:20:52,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:20:52,231 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 6 states. [2020-12-09 06:20:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:20:55,255 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2020-12-09 06:20:55,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 06:20:55,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-09 06:20:55,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:20:55,256 INFO L225 Difference]: With dead ends: 81 [2020-12-09 06:20:55,256 INFO L226 Difference]: Without dead ends: 79 [2020-12-09 06:20:55,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-09 06:20:55,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-09 06:20:55,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-12-09 06:20:55,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-09 06:20:55,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-12-09 06:20:55,263 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 17 [2020-12-09 06:20:55,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:20:55,263 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-12-09 06:20:55,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 06:20:55,265 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-12-09 06:20:55,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 06:20:55,266 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:20:55,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:20:55,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 06:20:55,467 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:20:55,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:20:55,469 INFO L82 PathProgramCache]: Analyzing trace with hash -957521465, now seen corresponding path program 1 times [2020-12-09 06:20:55,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:20:55,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639292682] [2020-12-09 06:20:55,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:20:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:55,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 06:20:55,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:20:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:56,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:20:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:56,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639292682] [2020-12-09 06:20:56,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [571530108] [2020-12-09 06:20:56,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:20:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:56,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 06:20:56,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:20:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:56,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:20:57,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:20:57,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684911766] [2020-12-09 06:20:57,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:20:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:20:57,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 06:20:57,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:20:57,616 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:20:57,618 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-12-09 06:20:57,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2020-12-09 06:20:57,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6, 6] total 16 [2020-12-09 06:20:57,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631716683] [2020-12-09 06:20:57,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-09 06:20:57,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:20:57,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-09 06:20:57,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2020-12-09 06:20:57,620 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 16 states. [2020-12-09 06:21:00,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:21:00,652 INFO L93 Difference]: Finished difference Result 118 states and 119 transitions. [2020-12-09 06:21:00,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 06:21:00,663 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 27 [2020-12-09 06:21:00,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:21:00,664 INFO L225 Difference]: With dead ends: 118 [2020-12-09 06:21:00,664 INFO L226 Difference]: Without dead ends: 97 [2020-12-09 06:21:00,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 106 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2020-12-09 06:21:00,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-09 06:21:00,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 64. [2020-12-09 06:21:00,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-09 06:21:00,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2020-12-09 06:21:00,672 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 27 [2020-12-09 06:21:00,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:21:00,673 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2020-12-09 06:21:00,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-09 06:21:00,673 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2020-12-09 06:21:00,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-09 06:21:00,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:21:00,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:21:01,275 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 06:21:01,278 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:21:01,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:21:01,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1112228340, now seen corresponding path program 1 times [2020-12-09 06:21:01,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:21:01,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971677335] [2020-12-09 06:21:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:21:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:21:01,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 06:21:01,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:21:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:21:01,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:21:03,403 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 06:21:04,414 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 06:21:05,489 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 06:21:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:21:05,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971677335] [2020-12-09 06:21:05,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [694358450] [2020-12-09 06:21:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:21:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:21:06,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 06:21:06,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:21:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:21:06,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:21:07,519 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 06:21:09,122 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-12-09 06:21:11,229 WARN L197 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 06:21:13,247 WARN L197 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 06:21:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:21:13,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629593285] [2020-12-09 06:21:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:21:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:21:13,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-09 06:21:13,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:21:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:21:14,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:21:15,792 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-12-09 06:21:15,797 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:21:15,797 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:21:17,172 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 06:21:19,596 WARN L197 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 06:21:22,341 WARN L197 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-12-09 06:21:24,996 WARN L197 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-12-09 06:21:25,002 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:21:25,002 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:21:27,889 WARN L197 SmtUtils]: Spent 885.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-12-09 06:21:30,670 WARN L197 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 06:21:33,454 WARN L197 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-12-09 06:21:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:21:33,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 06:21:33,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9, 8, 12, 12] total 29 [2020-12-09 06:21:33,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265282070] [2020-12-09 06:21:33,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-09 06:21:33,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:21:33,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-09 06:21:33,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2020-12-09 06:21:33,473 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 29 states. [2020-12-09 06:21:37,114 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 22 [2020-12-09 06:21:37,692 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 17 [2020-12-09 06:21:37,999 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2020-12-09 06:21:38,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:21:38,955 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2020-12-09 06:21:38,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 06:21:38,955 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2020-12-09 06:21:38,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:21:38,956 INFO L225 Difference]: With dead ends: 91 [2020-12-09 06:21:38,956 INFO L226 Difference]: Without dead ends: 53 [2020-12-09 06:21:38,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=350, Invalid=982, Unknown=0, NotChecked=0, Total=1332 [2020-12-09 06:21:38,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-09 06:21:38,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-09 06:21:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 06:21:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 52 transitions. [2020-12-09 06:21:38,962 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 52 transitions. Word has length 29 [2020-12-09 06:21:38,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:21:38,962 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 52 transitions. [2020-12-09 06:21:38,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-09 06:21:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 52 transitions. [2020-12-09 06:21:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-09 06:21:38,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:21:38,963 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:21:39,564 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 06:21:39,565 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:21:39,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:21:39,567 INFO L82 PathProgramCache]: Analyzing trace with hash 595578799, now seen corresponding path program 1 times [2020-12-09 06:21:39,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:21:39,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576843819] [2020-12-09 06:21:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:21:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:21:40,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 06:21:40,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:21:40,302 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 06:21:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:21:40,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:21:42,254 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-12-09 06:21:46,585 WARN L197 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-12-09 06:21:54,190 WARN L197 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-12-09 06:22:01,349 WARN L197 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 60 [2020-12-09 06:22:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:22:01,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576843819] [2020-12-09 06:22:01,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [79688031] [2020-12-09 06:22:01,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:22:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:22:02,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 06:22:02,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:22:02,288 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 06:22:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:22:02,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:22:09,705 WARN L197 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 44 [2020-12-09 06:22:18,997 WARN L197 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 59 [2020-12-09 06:22:28,589 WARN L197 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 60 [2020-12-09 06:22:39,054 WARN L197 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 63 [2020-12-09 06:22:39,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:22:39,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932278931] [2020-12-09 06:22:39,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eb74b53-c160-416f-8f39-ad802fa49b2e/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 06:22:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:22:39,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-09 06:22:39,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:22:41,975 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 17 [2020-12-09 06:22:42,296 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2020-12-09 06:22:42,308 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 06:22:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:22:42,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:22:49,684 WARN L197 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 06:22:49,692 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:22:49,693 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:22:58,181 WARN L197 SmtUtils]: Spent 887.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-12-09 06:23:09,796 WARN L197 SmtUtils]: Spent 1.96 s on a formula simplification that was a NOOP. DAG size: 51 [2020-12-09 06:23:24,702 WARN L197 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 64 [2020-12-09 06:23:36,822 WARN L197 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 66 [2020-12-09 06:23:36,828 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:23:36,828 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:23:51,317 WARN L197 SmtUtils]: Spent 2.42 s on a formula simplification that was a NOOP. DAG size: 68 [2020-12-09 06:24:05,249 WARN L197 SmtUtils]: Spent 2.90 s on a formula simplification that was a NOOP. DAG size: 69 [2020-12-09 06:24:21,517 WARN L197 SmtUtils]: Spent 3.17 s on a formula simplification that was a NOOP. DAG size: 72 [2020-12-09 06:24:21,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:24:21,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 06:24:21,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9, 8, 12, 12] total 29 [2020-12-09 06:24:21,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134595886] [2020-12-09 06:24:21,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-09 06:24:21,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:24:21,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-09 06:24:21,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=644, Unknown=1, NotChecked=0, Total=812 [2020-12-09 06:24:21,559 INFO L87 Difference]: Start difference. First operand 53 states and 52 transitions. Second operand 29 states. [2020-12-09 06:24:31,665 WARN L197 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-12-09 06:24:34,346 WARN L197 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-12-09 06:24:35,383 WARN L197 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-12-09 06:24:36,718 WARN L197 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-12-09 06:24:39,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:24:39,447 INFO L93 Difference]: Finished difference Result 53 states and 52 transitions. [2020-12-09 06:24:39,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 06:24:39,447 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 31 [2020-12-09 06:24:39,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:24:39,447 INFO L225 Difference]: With dead ends: 53 [2020-12-09 06:24:39,448 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 06:24:39,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 145 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 165.1s TimeCoverageRelationStatistics Valid=336, Invalid=995, Unknown=1, NotChecked=0, Total=1332 [2020-12-09 06:24:39,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 06:24:39,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 06:24:39,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 06:24:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 06:24:39,449 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-12-09 06:24:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:24:39,449 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 06:24:39,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-09 06:24:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 06:24:39,450 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 06:24:40,051 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 06:24:40,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 06:24:40,939 WARN L197 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-12-09 06:24:41,377 WARN L197 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-12-09 06:24:42,951 WARN L197 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2020-12-09 06:24:44,474 WARN L197 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2020-12-09 06:24:45,406 WARN L197 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 22 [2020-12-09 06:24:46,064 WARN L197 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-12-09 06:24:46,580 WARN L197 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-12-09 06:24:47,928 WARN L197 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2020-12-09 06:24:51,163 WARN L197 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-09 06:24:51,165 INFO L265 CegarLoopResult]: At program point L60(lines 19 61) the Hoare annotation is: true [2020-12-09 06:24:51,166 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 06:24:51,166 INFO L262 CegarLoopResult]: For program point L52(lines 52 55) no Hoare annotation was computed. [2020-12-09 06:24:51,166 INFO L262 CegarLoopResult]: For program point L52-2(lines 19 61) no Hoare annotation was computed. [2020-12-09 06:24:51,166 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 06:24:51,166 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 06:24:51,166 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 06:24:51,166 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-09 06:24:51,166 INFO L258 CegarLoopResult]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse4 (bvule (_ bv1 32) ULTIMATE.start_main_~n~0)) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse2 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse3 (= (_ bv0 32) ULTIMATE.start_main_~h~0)) (.cse6 (= (_ bv1 32) ULTIMATE.start_main_~q~0)) (.cse5 (bvule ULTIMATE.start_main_~n~0 (_ bv1 32)))) (or (and .cse0 .cse1 (bvule ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse2 .cse3 .cse4 (= (_ bv4 32) ULTIMATE.start_main_~q~0) .cse5 (bvule (_ bv1 32) ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) .cse4 (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse6 .cse5 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) .cse1 .cse2 .cse3 .cse6 .cse5))) [2020-12-09 06:24:51,167 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-09 06:24:51,167 INFO L258 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse3 (= (_ bv1 32) ULTIMATE.start_main_~q~0)) (.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse5 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse6 (= (_ bv0 32) ULTIMATE.start_main_~h~0)) (.cse2 (bvule (_ bv1 32) ULTIMATE.start_main_~n~0)) (.cse4 (bvule ULTIMATE.start_main_~n~0 (_ bv1 32)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) .cse2 (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse3 .cse4 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) .cse0 .cse1 .cse5 .cse6 .cse3 .cse4) (and .cse0 .cse1 (bvule ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse5 .cse6 .cse2 (= (_ bv4 32) ULTIMATE.start_main_~q~0) .cse4 (bvule (_ bv1 32) ULTIMATE.start_main_~r~0)))) [2020-12-09 06:24:51,167 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-09 06:24:51,167 INFO L258 CegarLoopResult]: At program point L12-8(lines 11 17) the Hoare annotation is: (let ((.cse3 (= (_ bv1 32) ULTIMATE.start_main_~q~0)) (.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse5 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse2 (bvule (_ bv1 32) ULTIMATE.start_main_~n~0)) (.cse4 (bvule ULTIMATE.start_main_~n~0 (_ bv1 32)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) .cse2 (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse3 .cse4 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) .cse0 .cse1 .cse5 (= (_ bv0 32) ULTIMATE.start_main_~h~0) .cse3 .cse4) (and (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~h~0) .cse0 .cse1 (bvule ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse5 .cse2 (= (bvadd (bvmul (bvmul ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0) (_ bv16 32)) (bvneg (bvmul (bvmul (bvmul ULTIMATE.start_main_~p~0 (_ bv16 32)) ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~r~0)) (bvmul ULTIMATE.start_main_~h~0 ULTIMATE.start_main_~h~0 ULTIMATE.start_main_~h~0) (bvneg (bvmul (bvmul ULTIMATE.start_main_~h~0 ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~q~0)) (bvneg (bvmul (bvmul (bvmul ULTIMATE.start_main_~p~0 (_ bv4 32)) ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~q~0)) (bvmul (bvmul ULTIMATE.start_main_~h~0 ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) (_ bv12 32)) (bvneg (bvmul (bvmul (bvmul ULTIMATE.start_main_~h~0 (_ bv12 32)) ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~q~0))) (_ bv0 32)) (= (_ bv4 32) ULTIMATE.start_main_~q~0) .cse4 (bvule (_ bv1 32) ULTIMATE.start_main_~r~0)))) [2020-12-09 06:24:51,167 INFO L262 CegarLoopResult]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-09 06:24:51,168 INFO L258 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse2 (bvule (_ bv1 32) ULTIMATE.start_main_~n~0)) (.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse5 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse6 (= (_ bv0 32) ULTIMATE.start_main_~h~0)) (.cse3 (= (_ bv1 32) ULTIMATE.start_main_~q~0)) (.cse4 (bvule ULTIMATE.start_main_~n~0 (_ bv1 32)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) .cse2 (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse3 .cse4 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 (bvule ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse5 .cse6 .cse2 (= (_ bv4 32) ULTIMATE.start_main_~q~0) .cse4 (bvule (_ bv1 32) ULTIMATE.start_main_~r~0)) (and (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) .cse0 .cse1 .cse5 .cse6 .cse3 .cse4))) [2020-12-09 06:24:51,168 INFO L262 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-09 06:24:51,168 INFO L258 CegarLoopResult]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse2 (bvule (_ bv1 32) ULTIMATE.start_main_~n~0)) (.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse5 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse6 (= (_ bv0 32) ULTIMATE.start_main_~h~0)) (.cse3 (= (_ bv1 32) ULTIMATE.start_main_~q~0)) (.cse4 (bvule ULTIMATE.start_main_~n~0 (_ bv1 32)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) .cse2 (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse3 .cse4 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 (bvule ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse5 .cse6 .cse2 (= (_ bv4 32) ULTIMATE.start_main_~q~0) .cse4 (bvule (_ bv1 32) ULTIMATE.start_main_~r~0)) (and (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) .cse0 .cse1 .cse5 .cse6 .cse3 .cse4))) [2020-12-09 06:24:51,168 INFO L262 CegarLoopResult]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-09 06:24:51,168 INFO L258 CegarLoopResult]: At program point L12-17(lines 46 47) the Hoare annotation is: (let ((.cse2 (bvule (_ bv1 32) ULTIMATE.start_main_~n~0)) (.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse5 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse6 (= (_ bv0 32) ULTIMATE.start_main_~h~0)) (.cse3 (= (_ bv1 32) ULTIMATE.start_main_~q~0)) (.cse4 (bvule ULTIMATE.start_main_~n~0 (_ bv1 32)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) .cse2 (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse3 .cse4 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 (bvule ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse5 .cse6 .cse2 (= (_ bv4 32) ULTIMATE.start_main_~q~0) .cse4 (bvule (_ bv1 32) ULTIMATE.start_main_~r~0)) (and (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) .cse0 .cse1 .cse5 .cse6 .cse3 .cse4))) [2020-12-09 06:24:51,168 INFO L262 CegarLoopResult]: For program point L12-18(lines 12 15) no Hoare annotation was computed. [2020-12-09 06:24:51,168 INFO L258 CegarLoopResult]: At program point L12-20(lines 11 17) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse2 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse3 (= (_ bv1 32) ULTIMATE.start_main_~q~0)) (.cse4 (bvule ULTIMATE.start_main_~n~0 (_ bv1 32)))) (or (and .cse0 .cse1 .cse2 .cse3 (not (bvule ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0))) (and (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) .cse1 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse3 .cse4 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and .cse0 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) .cse1 .cse2 .cse3 .cse4))) [2020-12-09 06:24:51,168 INFO L262 CegarLoopResult]: For program point L12-21(lines 12 15) no Hoare annotation was computed. [2020-12-09 06:24:51,169 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 06:24:51,169 INFO L258 CegarLoopResult]: At program point L12-23(lines 11 17) the Hoare annotation is: (let ((.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse2 (= (_ bv1 32) ULTIMATE.start_main_~q~0)) (.cse3 (bvule ULTIMATE.start_main_~n~0 (_ bv1 32)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse2 .cse3 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) .cse0 .cse1 (= (_ bv0 32) ULTIMATE.start_main_~p~0) .cse2 .cse3))) [2020-12-09 06:24:51,169 INFO L262 CegarLoopResult]: For program point L12-24(lines 12 15) no Hoare annotation was computed. [2020-12-09 06:24:51,169 INFO L265 CegarLoopResult]: At program point L12-26(lines 11 17) the Hoare annotation is: true [2020-12-09 06:24:51,169 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-09 06:24:51,169 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-09 06:24:51,169 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-09 06:24:51,169 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-09 06:24:51,169 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-09 06:24:51,169 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-09 06:24:51,169 INFO L262 CegarLoopResult]: For program point L13-6(lines 13 14) no Hoare annotation was computed. [2020-12-09 06:24:51,169 INFO L262 CegarLoopResult]: For program point L13-7(lines 13 14) no Hoare annotation was computed. [2020-12-09 06:24:51,170 INFO L262 CegarLoopResult]: For program point L38-1(lines 38 56) no Hoare annotation was computed. [2020-12-09 06:24:51,170 INFO L262 CegarLoopResult]: For program point L13-8(lines 13 14) no Hoare annotation was computed. [2020-12-09 06:24:51,170 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 06:24:51,170 INFO L258 CegarLoopResult]: At program point L30-2(lines 30 35) the Hoare annotation is: (let ((.cse0 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse1 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse2 (= (_ bv0 32) ULTIMATE.start_main_~h~0)) (.cse3 (bvule ULTIMATE.start_main_~n~0 (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) .cse0 .cse1 .cse2 (= (_ bv1 32) ULTIMATE.start_main_~q~0) .cse3) (and .cse0 (bvule ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse1 .cse2 (bvule (_ bv1 32) ULTIMATE.start_main_~n~0) (= (_ bv4 32) ULTIMATE.start_main_~q~0) .cse3 (bvule (_ bv1 32) ULTIMATE.start_main_~r~0)))) [2020-12-09 06:24:51,170 INFO L262 CegarLoopResult]: For program point L31(lines 31 32) no Hoare annotation was computed. [2020-12-09 06:24:51,170 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 06:24:51,170 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 06:24:51,170 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 06:24:51,170 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 06:24:51,170 INFO L262 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-12-09 06:24:51,170 INFO L262 CegarLoopResult]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2020-12-09 06:24:51,170 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 06:24:51,171 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 06:24:51,171 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-09 06:24:51,171 INFO L262 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-12-09 06:24:51,171 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 06:24:51,175 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) 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.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 06:24:51,178 INFO L168 Benchmark]: Toolchain (without parser) took 251609.11 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 30.3 MB in the beginning and 43.5 MB in the end (delta: -13.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-12-09 06:24:51,178 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 52.4 MB. Free memory is still 34.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:24:51,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.57 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 30.0 MB in the beginning and 52.2 MB in the end (delta: -22.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-12-09 06:24:51,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.37 ms. Allocated memory is still 69.2 MB. Free memory was 52.2 MB in the beginning and 50.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:24:51,180 INFO L168 Benchmark]: Boogie Preprocessor took 29.85 ms. Allocated memory is still 69.2 MB. Free memory was 50.3 MB in the beginning and 48.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:24:51,180 INFO L168 Benchmark]: RCFGBuilder took 1192.38 ms. Allocated memory is still 69.2 MB. Free memory was 48.6 MB in the beginning and 46.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-12-09 06:24:51,180 INFO L168 Benchmark]: TraceAbstraction took 250128.03 ms. Allocated memory is still 69.2 MB. Free memory was 46.0 MB in the beginning and 43.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:24:51,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 52.4 MB. Free memory is still 34.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 214.57 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 30.0 MB in the beginning and 52.2 MB in the end (delta: -22.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.37 ms. Allocated memory is still 69.2 MB. Free memory was 52.2 MB in the beginning and 50.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.85 ms. Allocated memory is still 69.2 MB. Free memory was 50.3 MB in the beginning and 48.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1192.38 ms. Allocated memory is still 69.2 MB. Free memory was 48.6 MB in the beginning and 46.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 250128.03 ms. Allocated memory is still 69.2 MB. Free memory was 46.0 MB in the beginning and 43.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 26.6 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 - 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 9 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) 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...