./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8 --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 d74df1b7449c0e223ad61b2c5cd0b2b79a63ca78 .................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8 --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 d74df1b7449c0e223ad61b2c5cd0b2b79a63ca78 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:23:09,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:23:09,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:23:09,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:23:09,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:23:09,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:23:09,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:23:09,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:23:09,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:23:09,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:23:09,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:23:09,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:23:09,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:23:09,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:23:09,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:23:09,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:23:09,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:23:09,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:23:09,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:23:09,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:23:09,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:23:09,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:23:09,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:23:09,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:23:09,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:23:09,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:23:09,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:23:09,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:23:09,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:23:09,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:23:09,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:23:09,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:23:09,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:23:09,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:23:09,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:23:09,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:23:09,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:23:09,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:23:09,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:23:09,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:23:09,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:23:09,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:23:09,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:23:09,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:23:09,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:23:09,729 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:23:09,729 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:23:09,729 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:23:09,729 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:23:09,730 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:23:09,736 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:23:09,736 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:23:09,737 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:23:09,738 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:23:09,738 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:23:09,738 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:23:09,738 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:23:09,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:23:09,739 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:23:09,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:23:09,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:23:09,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:23:09,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:23:09,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:23:09,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:23:09,741 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:23:09,741 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:23:09,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:23:09,742 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:23:09,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:23:09,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:23:09,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:23:09,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:09,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:23:09,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:23:09,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:23:09,744 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:23:09,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:23:09,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:23:09,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:23:09,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:23:09,745 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_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d74df1b7449c0e223ad61b2c5cd0b2b79a63ca78 [2021-10-13 07:23:10,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:23:10,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:23:10,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:23:10,073 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:23:10,074 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:23:10,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c [2021-10-13 07:23:10,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/data/be1aaf1a6/27c4513833d345cbabda3f9283507399/FLAGac9439521 [2021-10-13 07:23:10,678 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:23:10,680 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c [2021-10-13 07:23:10,691 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/data/be1aaf1a6/27c4513833d345cbabda3f9283507399/FLAGac9439521 [2021-10-13 07:23:11,035 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/data/be1aaf1a6/27c4513833d345cbabda3f9283507399 [2021-10-13 07:23:11,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:23:11,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:23:11,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:11,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:23:11,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:23:11,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:11" (1/1) ... [2021-10-13 07:23:11,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33160f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:11, skipping insertion in model container [2021-10-13 07:23:11,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:11" (1/1) ... [2021-10-13 07:23:11,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:23:11,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:23:11,254 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c[458,471] [2021-10-13 07:23:11,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:11,275 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:23:11,288 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c[458,471] [2021-10-13 07:23:11,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:11,307 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:23:11,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:11 WrapperNode [2021-10-13 07:23:11,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:11,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:11,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:23:11,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:23:11,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:11" (1/1) ... [2021-10-13 07:23:11,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:11" (1/1) ... [2021-10-13 07:23:11,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:11,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:23:11,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:23:11,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:23:11,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:11" (1/1) ... [2021-10-13 07:23:11,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:11" (1/1) ... [2021-10-13 07:23:11,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:11" (1/1) ... [2021-10-13 07:23:11,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:11" (1/1) ... [2021-10-13 07:23:11,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:11" (1/1) ... [2021-10-13 07:23:11,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:11" (1/1) ... [2021-10-13 07:23:11,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:11" (1/1) ... [2021-10-13 07:23:11,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:23:11,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:23:11,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:23:11,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:23:11,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:11" (1/1) ... [2021-10-13 07:23:11,371 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:11,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:11,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:23:11,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:23:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:23:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:23:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:23:11,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:23:11,781 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:23:11,782 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-13 07:23:11,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:11 BoogieIcfgContainer [2021-10-13 07:23:11,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:23:11,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:23:11,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:23:11,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:23:11,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:23:11" (1/3) ... [2021-10-13 07:23:11,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e114b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:11, skipping insertion in model container [2021-10-13 07:23:11,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:11" (2/3) ... [2021-10-13 07:23:11,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e114b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:11, skipping insertion in model container [2021-10-13 07:23:11,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:11" (3/3) ... [2021-10-13 07:23:11,793 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound2.c [2021-10-13 07:23:11,798 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:23:11,798 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:23:11,881 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:23:11,890 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:23:11,891 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:23:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:11,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:23:11,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:11,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:23:11,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:11,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:11,921 INFO L82 PathProgramCache]: Analyzing trace with hash 2997072, now seen corresponding path program 1 times [2021-10-13 07:23:11,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:11,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009509309] [2021-10-13 07:23:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:11,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:12,061 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:23:12,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347784533] [2021-10-13 07:23:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:12,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:23:12,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:12,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:23:12,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:23:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:12,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:23:12,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:12,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:12,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:12,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009509309] [2021-10-13 07:23:12,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:23:12,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347784533] [2021-10-13 07:23:12,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347784533] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:12,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:12,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:23:12,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169455601] [2021-10-13 07:23:12,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:23:12,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:12,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:23:12,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:23:12,931 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:13,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:13,126 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-10-13 07:23:13,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:23:13,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 07:23:13,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:13,144 INFO L225 Difference]: With dead ends: 36 [2021-10-13 07:23:13,145 INFO L226 Difference]: Without dead ends: 11 [2021-10-13 07:23:13,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 636.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:23:13,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-13 07:23:13,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-13 07:23:13,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-13 07:23:13,185 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2021-10-13 07:23:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:13,186 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-13 07:23:13,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-13 07:23:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:23:13,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:13,188 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:13,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:13,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 07:23:13,403 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:13,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:13,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1480619493, now seen corresponding path program 1 times [2021-10-13 07:23:13,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:13,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185992206] [2021-10-13 07:23:13,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:13,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:13,429 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:23:13,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244460970] [2021-10-13 07:23:13,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:13,430 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:23:13,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:13,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:23:13,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:23:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:13,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:23:13,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:13,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:14,005 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:14,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185992206] [2021-10-13 07:23:14,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:23:14,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244460970] [2021-10-13 07:23:14,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244460970] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:23:14,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1227862709] [2021-10-13 07:23:14,026 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-13 07:23:14,027 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:23:14,031 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:23:14,036 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:23:14,037 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:23:14,065 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:14,068 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:23:14,069 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:14,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:23:14,076 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:23:14,078 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:14,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:23:14,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-13 07:23:14,135 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:23:14,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:14,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:23:14,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:14,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:23:14,143 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:23:14,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:14,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:14,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:14,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:23:14,195 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:14,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:23:14,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:14,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:23:14,198 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:23:14,225 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:23:14,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:14,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:23:14,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:14,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:23:14,227 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:23:14,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:23:14,285 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:14,289 INFO L180 QuantifierPusher]: treesize reduction 8, result has 94.7 percent of original size [2021-10-13 07:23:14,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-10-13 07:23:14,292 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:23:14,293 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:444, output treesize:144 [2021-10-13 07:23:14,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:14,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:23:14,508 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_14| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) 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.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:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-10-13 07:23:14,511 INFO L168 Benchmark]: Toolchain (without parser) took 3463.59 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 102.3 MB in the beginning and 93.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:14,511 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 35.6 MB in the beginning and 35.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:23:14,512 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.16 ms. Allocated memory is still 138.4 MB. Free memory was 102.0 MB in the beginning and 110.9 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:14,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.99 ms. Allocated memory is still 138.4 MB. Free memory was 110.9 MB in the beginning and 109.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:14,513 INFO L168 Benchmark]: Boogie Preprocessor took 20.22 ms. Allocated memory is still 138.4 MB. Free memory was 109.4 MB in the beginning and 108.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:14,514 INFO L168 Benchmark]: RCFGBuilder took 421.89 ms. Allocated memory is still 138.4 MB. Free memory was 108.3 MB in the beginning and 96.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:14,514 INFO L168 Benchmark]: TraceAbstraction took 2723.85 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 96.3 MB in the beginning and 93.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:14,524 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 35.6 MB in the beginning and 35.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.16 ms. Allocated memory is still 138.4 MB. Free memory was 102.0 MB in the beginning and 110.9 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.99 ms. Allocated memory is still 138.4 MB. Free memory was 110.9 MB in the beginning and 109.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.22 ms. Allocated memory is still 138.4 MB. Free memory was 109.4 MB in the beginning and 108.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 421.89 ms. Allocated memory is still 138.4 MB. Free memory was 108.3 MB in the beginning and 96.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2723.85 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 96.3 MB in the beginning and 93.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_14|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:23:14,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:23:16,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:23:16,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:23:16,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:23:16,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:23:16,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:23:16,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:23:16,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:23:16,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:23:16,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:23:16,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:23:16,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:23:16,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:23:16,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:23:16,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:23:16,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:23:16,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:23:16,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:23:17,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:23:17,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:23:17,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:23:17,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:23:17,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:23:17,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:23:17,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:23:17,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:23:17,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:23:17,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:23:17,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:23:17,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:23:17,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:23:17,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:23:17,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:23:17,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:23:17,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:23:17,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:23:17,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:23:17,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:23:17,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:23:17,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:23:17,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:23:17,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:23:17,079 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:23:17,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:23:17,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:23:17,081 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:23:17,081 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:23:17,082 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:23:17,082 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:23:17,082 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:23:17,082 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:23:17,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:23:17,084 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:23:17,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:23:17,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:23:17,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:23:17,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:23:17,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:23:17,085 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:23:17,086 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:23:17,086 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:23:17,086 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:23:17,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:23:17,086 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:23:17,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:23:17,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:23:17,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:23:17,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:23:17,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:17,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:23:17,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:23:17,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:23:17,088 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:23:17,088 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:23:17,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:23:17,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:23:17,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:23:17,090 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d74df1b7449c0e223ad61b2c5cd0b2b79a63ca78 [2021-10-13 07:23:17,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:23:17,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:23:17,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:23:17,489 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:23:17,490 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:23:17,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c [2021-10-13 07:23:17,562 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/data/2e3956286/dcd2be6fc2794d9787b49c65c8986919/FLAG431978264 [2021-10-13 07:23:17,993 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:23:17,993 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c [2021-10-13 07:23:18,000 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/data/2e3956286/dcd2be6fc2794d9787b49c65c8986919/FLAG431978264 [2021-10-13 07:23:18,396 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/data/2e3956286/dcd2be6fc2794d9787b49c65c8986919 [2021-10-13 07:23:18,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:23:18,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:23:18,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:18,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:23:18,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:23:18,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:18" (1/1) ... [2021-10-13 07:23:18,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb4db37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:18, skipping insertion in model container [2021-10-13 07:23:18,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:18" (1/1) ... [2021-10-13 07:23:18,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:23:18,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:23:18,642 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c[458,471] [2021-10-13 07:23:18,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:18,680 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:23:18,695 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c[458,471] [2021-10-13 07:23:18,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:18,763 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:23:18,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:18 WrapperNode [2021-10-13 07:23:18,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:18,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:18,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:23:18,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:23:18,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:18" (1/1) ... [2021-10-13 07:23:18,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:18" (1/1) ... [2021-10-13 07:23:18,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:18,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:23:18,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:23:18,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:23:18,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:18" (1/1) ... [2021-10-13 07:23:18,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:18" (1/1) ... [2021-10-13 07:23:18,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:18" (1/1) ... [2021-10-13 07:23:18,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:18" (1/1) ... [2021-10-13 07:23:18,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:18" (1/1) ... [2021-10-13 07:23:18,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:18" (1/1) ... [2021-10-13 07:23:18,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:18" (1/1) ... [2021-10-13 07:23:18,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:23:18,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:23:18,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:23:18,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:23:18,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:18" (1/1) ... [2021-10-13 07:23:18,891 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:18,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:18,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:23:18,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:23:18,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:23:18,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:23:18,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:23:18,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:23:19,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:23:19,988 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-13 07:23:19,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:19 BoogieIcfgContainer [2021-10-13 07:23:19,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:23:19,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:23:19,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:23:19,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:23:19,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:23:18" (1/3) ... [2021-10-13 07:23:19,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490ea09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:19, skipping insertion in model container [2021-10-13 07:23:19,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:18" (2/3) ... [2021-10-13 07:23:19,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490ea09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:19, skipping insertion in model container [2021-10-13 07:23:19,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:19" (3/3) ... [2021-10-13 07:23:19,999 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound2.c [2021-10-13 07:23:20,004 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:23:20,004 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:23:20,050 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:23:20,056 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:23:20,056 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:23:20,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 17 states have (on average 1.588235294117647) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:20,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:23:20,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:20,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:20,074 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:20,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:20,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-13 07:23:20,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:20,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464518956] [2021-10-13 07:23:20,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:20,092 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:20,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:20,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:20,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:23:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:20,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:23:20,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:20,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:20,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:20,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464518956] [2021-10-13 07:23:20,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464518956] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:20,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:20,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:23:20,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592608535] [2021-10-13 07:23:20,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:23:20,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:20,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:23:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:23:20,415 INFO L87 Difference]: Start difference. First operand has 21 states, 17 states have (on average 1.588235294117647) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:20,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:20,429 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2021-10-13 07:23:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:23:20,430 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 07:23:20,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:20,438 INFO L225 Difference]: With dead ends: 39 [2021-10-13 07:23:20,438 INFO L226 Difference]: Without dead ends: 17 [2021-10-13 07:23:20,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:23:20,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-13 07:23:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-13 07:23:20,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:20,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-13 07:23:20,476 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2021-10-13 07:23:20,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:20,476 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-13 07:23:20,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:20,477 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-13 07:23:20,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:23:20,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:20,477 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:20,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:20,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:20,692 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:20,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:20,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-13 07:23:20,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:20,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160856356] [2021-10-13 07:23:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:20,694 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:20,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:20,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:20,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:23:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:20,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:23:20,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:21,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:23,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:23,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:23,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160856356] [2021-10-13 07:23:23,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160856356] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:23,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:23,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:23:23,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743529606] [2021-10-13 07:23:23,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:23:23,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:23,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:23:23,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:23:23,626 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:36,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:36,203 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-10-13 07:23:36,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:23:36,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 07:23:36,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:36,206 INFO L225 Difference]: With dead ends: 40 [2021-10-13 07:23:36,206 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 07:23:36,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 7000.4ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:23:36,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 07:23:36,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-10-13 07:23:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-10-13 07:23:36,218 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 7 [2021-10-13 07:23:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:36,218 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-13 07:23:36,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-10-13 07:23:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:23:36,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:36,220 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:36,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 07:23:36,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:36,438 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:36,439 INFO L82 PathProgramCache]: Analyzing trace with hash -2052598129, now seen corresponding path program 1 times [2021-10-13 07:23:36,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:36,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593894945] [2021-10-13 07:23:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:36,441 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:36,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:36,443 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:36,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:23:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:36,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:23:36,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:39,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 07:23:52,404 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:52,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593894945] [2021-10-13 07:23:52,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593894945] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:23:52,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [12429750] [2021-10-13 07:23:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:52,405 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:23:52,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:23:52,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:23:52,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-13 07:23:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:53,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:23:53,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:54,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 07:24:04,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [12429750] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:04,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877340621] [2021-10-13 07:24:04,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:04,075 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:24:04,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:24:04,077 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:24:04,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 07:24:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:04,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:24:04,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:06,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 07:24:15,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877340621] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:15,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:24:15,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 6, 4, 7, 4] total 9 [2021-10-13 07:24:15,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641808319] [2021-10-13 07:24:15,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:24:15,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:15,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:24:15,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:24:15,486 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:33,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:33,731 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-10-13 07:24:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 07:24:33,732 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 07:24:33,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:33,733 INFO L225 Difference]: With dead ends: 36 [2021-10-13 07:24:33,733 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 07:24:33,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 36654.9ms TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-10-13 07:24:33,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 07:24:33,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 14. [2021-10-13 07:24:33,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-13 07:24:33,740 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2021-10-13 07:24:33,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:33,740 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-13 07:24:33,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:33,741 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-13 07:24:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:24:33,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:33,741 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:24:33,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-10-13 07:24:33,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:34,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 07:24:34,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:34,351 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:34,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:34,351 INFO L82 PathProgramCache]: Analyzing trace with hash -2052638844, now seen corresponding path program 1 times [2021-10-13 07:24:34,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:34,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873945308] [2021-10-13 07:24:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:34,352 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:34,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:34,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:34,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:24:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:34,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:24:34,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:35,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:45,198 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:45,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873945308] [2021-10-13 07:24:45,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873945308] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:45,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1072510147] [2021-10-13 07:24:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:45,200 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:45,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:24:45,215 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:24:45,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-13 07:24:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:45,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:24:45,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:46,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:51,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1072510147] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:51,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691723468] [2021-10-13 07:24:51,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:51,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:24:51,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:24:51,961 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:24:51,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 07:24:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:52,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:24:52,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:52,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:52,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:56,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691723468] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:56,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:24:56,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6, 6, 8, 6] total 15 [2021-10-13 07:24:56,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591417158] [2021-10-13 07:24:56,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 07:24:56,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:56,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 07:24:56,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:24:56,658 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:41,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:41,646 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-10-13 07:25:41,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 07:25:41,660 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 07:25:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:41,660 INFO L225 Difference]: With dead ends: 34 [2021-10-13 07:25:41,660 INFO L226 Difference]: Without dead ends: 26 [2021-10-13 07:25:41,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 45571.9ms TimeCoverageRelationStatistics Valid=325, Invalid=797, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 07:25:41,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-13 07:25:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-13 07:25:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-13 07:25:41,669 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 13 [2021-10-13 07:25:41,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:41,670 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-13 07:25:41,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:41,670 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-13 07:25:41,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:25:41,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:41,671 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:41,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:41,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:42,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-13 07:25:42,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:42,275 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:42,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:42,276 INFO L82 PathProgramCache]: Analyzing trace with hash -755348412, now seen corresponding path program 2 times [2021-10-13 07:25:42,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:42,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370212204] [2021-10-13 07:25:42,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:25:42,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:42,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:42,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:42,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:25:43,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:25:43,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:25:43,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:25:43,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:44,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:45,054 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:45,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370212204] [2021-10-13 07:25:45,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370212204] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:45,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [658881329] [2021-10-13 07:25:45,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:25:45,055 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:25:45,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:25:45,056 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:25:45,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-13 07:25:46,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:25:46,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:25:46,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 07:25:46,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:48,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:26:44,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [658881329] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:26:44,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708925434] [2021-10-13 07:26:44,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:26:44,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:26:44,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:26:44,362 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:26:44,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 07:26:45,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:26:45,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:26:45,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:26:45,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:26:46,785 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 07:26:46,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:26:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 07:26:52,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708925434] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:26:52,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-10-13 07:26:52,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9, 10, 10, 7] total 38 [2021-10-13 07:26:52,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108037555] [2021-10-13 07:26:52,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:26:52,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:26:52,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:26:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1156, Unknown=1, NotChecked=0, Total=1406 [2021-10-13 07:26:52,805 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:55,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:26:55,797 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-10-13 07:26:55,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:26:55,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 07:26:55,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:26:55,798 INFO L225 Difference]: With dead ends: 26 [2021-10-13 07:26:55,798 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:26:55,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 51307.3ms TimeCoverageRelationStatistics Valid=302, Invalid=1337, Unknown=1, NotChecked=0, Total=1640 [2021-10-13 07:26:55,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:26:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:26:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:26:55,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-10-13 07:26:55,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:26:55,800 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:26:55,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:26:55,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:26:55,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:26:55,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:26:55,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:26:55,804 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:26:55,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:56,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:56,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:26:56,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:26:56,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:26:56,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:26:56,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:27:08,774 WARN L207 SmtUtils]: Spent 12.18 s on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2021-10-13 07:27:28,499 WARN L207 SmtUtils]: Spent 14.90 s on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2021-10-13 07:27:28,511 INFO L853 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse15 (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (let ((.cse8 ((_ sign_extend 32) (_ bv0 32))) (.cse9 (bvneg .cse15)) (.cse14 ((_ sign_extend 16) ULTIMATE.start_main_~k~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)))) (let ((.cse4 (or .cse3 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (.cse5 (bvsle .cse14 (_ bv2 32))) (.cse6 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse7 (= .cse8 (bvadd (bvneg (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv2 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) .cse9 (bvneg (bvmul (bvmul .cse15 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~x~0)))) (.cse10 (bvsge .cse14 (_ bv0 32))) (.cse1 ((_ sign_extend 32) (_ bv1 32))) (.cse2 ((_ sign_extend 32) .cse14))) (or (let ((.cse0 (bvadd .cse8 .cse1))) (and (= ULTIMATE.start_main_~y~0 .cse0) (bvslt (bvadd (bvmul .cse1 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~c~0) .cse2) .cse3 (= ULTIMATE.start_main_~c~0 .cse0) .cse4 .cse5 .cse6 .cse7)) (and (not (bvslt ULTIMATE.start_main_~c~0 .cse2)) (= .cse8 (bvadd .cse9 (bvmul .cse2 ULTIMATE.start_main_~y~0))) .cse3 .cse10 .cse4 (forall ((ULTIMATE.start_main_~k~0 (_ BitVec 16))) (let ((.cse12 ((_ sign_extend 32) (_ bv1 32))) (.cse11 ((_ sign_extend 32) ((_ sign_extend 16) ULTIMATE.start_main_~k~0)))) (or (not (bvslt ULTIMATE.start_main_~c~0 .cse11)) (bvslt (bvadd .cse12 ULTIMATE.start_main_~c~0) .cse11) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (let ((.cse13 (bvadd .cse12 ULTIMATE.start_main_~y~0))) (bvmul .cse13 .cse13))) (bvmul .cse11 .cse12) (bvmul .cse11 ULTIMATE.start_main_~y~0)))))) .cse5 .cse6 .cse7) (and (= .cse8 ULTIMATE.start_main_~y~0) (= .cse8 ULTIMATE.start_main_~c~0) (= .cse8 ULTIMATE.start_main_~x~0) .cse3 .cse10 (not (bvslt (bvadd (bvmul .cse1 (_ bv2 64)) ULTIMATE.start_main_~c~0) .cse2))))))) [2021-10-13 07:27:28,511 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 07:27:28,511 INFO L857 garLoopResultBuilder]: For program point L27-3(lines 27 36) no Hoare annotation was computed. [2021-10-13 07:27:28,511 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-10-13 07:27:28,511 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-10-13 07:27:28,512 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2021-10-13 07:27:28,512 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-13 07:27:28,512 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:27:28,512 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:27:28,512 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:27:28,512 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 07:27:28,513 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:27:28,513 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 07:27:28,513 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-10-13 07:27:28,513 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 30 31) the Hoare annotation is: (let ((.cse13 (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (let ((.cse7 ((_ sign_extend 32) (_ bv0 32))) (.cse9 (bvneg .cse13)) (.cse14 ((_ sign_extend 16) ULTIMATE.start_main_~k~0))) (let ((.cse1 ((_ sign_extend 32) (_ bv1 32))) (.cse2 ((_ sign_extend 32) .cse14)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse8 (bvsge .cse14 (_ bv0 32))) (.cse4 (bvsle .cse14 (_ bv2 32))) (.cse5 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse6 (= .cse7 (bvadd (bvneg (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv2 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) .cse9 (bvneg (bvmul (bvmul .cse13 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~x~0))))) (or (let ((.cse0 (bvadd .cse7 .cse1))) (and (= ULTIMATE.start_main_~y~0 .cse0) (bvslt (bvadd (bvmul .cse1 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~c~0) .cse2) .cse3 (= ULTIMATE.start_main_~c~0 .cse0) .cse4 .cse5 .cse6)) (and (= .cse7 ULTIMATE.start_main_~y~0) (= .cse7 ULTIMATE.start_main_~c~0) (= .cse7 ULTIMATE.start_main_~x~0) .cse3 .cse8 (not (bvslt (bvadd (bvmul .cse1 (_ bv2 64)) ULTIMATE.start_main_~c~0) .cse2)) .cse5) (and (not (bvslt ULTIMATE.start_main_~c~0 .cse2)) (= .cse7 (bvadd .cse9 (bvmul .cse2 ULTIMATE.start_main_~y~0))) .cse3 .cse8 (forall ((ULTIMATE.start_main_~k~0 (_ BitVec 16))) (let ((.cse11 ((_ sign_extend 32) (_ bv1 32))) (.cse10 ((_ sign_extend 32) ((_ sign_extend 16) ULTIMATE.start_main_~k~0)))) (or (not (bvslt ULTIMATE.start_main_~c~0 .cse10)) (bvslt (bvadd .cse11 ULTIMATE.start_main_~c~0) .cse10) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (let ((.cse12 (bvadd .cse11 ULTIMATE.start_main_~y~0))) (bvmul .cse12 .cse12))) (bvmul .cse10 .cse11) (bvmul .cse10 ULTIMATE.start_main_~y~0)))))) .cse4 .cse5 .cse6))))) [2021-10-13 07:27:28,513 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-10-13 07:27:28,513 INFO L860 garLoopResultBuilder]: At program point L39(lines 17 40) the Hoare annotation is: true [2021-10-13 07:27:28,513 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-13 07:27:28,514 INFO L853 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: (and (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ((_ sign_extend 32) (_ bv0 32)) (let ((.cse0 (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (bvadd (bvneg (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv2 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvneg .cse0) (bvneg (bvmul (bvmul .cse0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~x~0))))) [2021-10-13 07:27:28,514 INFO L857 garLoopResultBuilder]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2021-10-13 07:27:28,514 INFO L860 garLoopResultBuilder]: At program point L10-8(lines 9 15) the Hoare annotation is: true [2021-10-13 07:27:28,517 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:27:28,539 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.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:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-10-13 07:27:28,542 INFO L168 Benchmark]: Toolchain (without parser) took 250139.53 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 47.4 MB in the beginning and 43.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:28,543 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory was 63.6 MB in the beginning and 63.6 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:27:28,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.83 ms. Allocated memory is still 83.9 MB. Free memory was 47.2 MB in the beginning and 67.3 MB in the end (delta: -20.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:28,543 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.98 ms. Allocated memory is still 83.9 MB. Free memory was 67.3 MB in the beginning and 65.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:28,544 INFO L168 Benchmark]: Boogie Preprocessor took 52.36 ms. Allocated memory is still 83.9 MB. Free memory was 65.7 MB in the beginning and 64.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:27:28,553 INFO L168 Benchmark]: RCFGBuilder took 1108.30 ms. Allocated memory is still 83.9 MB. Free memory was 64.5 MB in the beginning and 54.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:28,554 INFO L168 Benchmark]: TraceAbstraction took 248548.37 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 53.9 MB in the beginning and 43.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 41.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:28,556 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 83.9 MB. Free memory was 63.6 MB in the beginning and 63.6 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 358.83 ms. Allocated memory is still 83.9 MB. Free memory was 47.2 MB in the beginning and 67.3 MB in the end (delta: -20.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.98 ms. Allocated memory is still 83.9 MB. Free memory was 67.3 MB in the beginning and 65.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.36 ms. Allocated memory is still 83.9 MB. Free memory was 65.7 MB in the beginning and 64.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1108.30 ms. Allocated memory is still 83.9 MB. Free memory was 64.5 MB in the beginning and 54.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 248548.37 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 53.9 MB in the beginning and 43.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 41.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 248469.5ms, OverallIterations: 5, TraceHistogramMax: 6, EmptinessCheckTime: 11.2ms, AutomataDifference: 78870.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 32105.3ms, InitialAbstractionConstructionTime: 8.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 58 SDtfs, 119 SDslu, 95 SDs, 0 SdLazy, 159 SolverSat, 115 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 17117.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 246 SyntacticMatches, 7 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 140534.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 39.1ms AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 17 NumberOfFragments, 453 HoareAnnotationTreeSize, 5 FomulaSimplifications, 355 FormulaSimplificationTreeSizeReduction, 182.9ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 459 FormulaSimplificationTreeSizeReductionInter, 31916.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 90.6ms SsaConstructionTime, 5791.5ms SatisfiabilityAnalysisTime, 128283.1ms InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 312 ConstructedInterpolants, 6 QuantifiedInterpolants, 4395 SizeOfPredicates, 44 NumberOfNonLiveVariables, 544 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 22 InterpolantComputations, 5 PerfectInterpolantSequences, 126/330 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:27:28,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ea80c11-2240-4cd3-bbb1-4d3e9381b53a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...