./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 ......................................................................................................................................... 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_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:19:32,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:19:32,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:19:32,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:19:32,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:19:32,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:19:32,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:19:32,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:19:32,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:19:32,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:19:32,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:19:32,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:19:32,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:19:32,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:19:32,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:19:32,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:19:32,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:19:32,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:19:32,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:19:32,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:19:32,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:19:32,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:19:32,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:19:32,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:19:32,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:19:32,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:19:32,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:19:32,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:19:32,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:19:32,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:19:32,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:19:32,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:19:32,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:19:32,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:19:32,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:19:32,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:19:32,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:19:32,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:19:32,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:19:32,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:19:32,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:19:32,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-10-24 11:19:32,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:19:32,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:19:32,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:19:32,671 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:19:32,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:19:32,672 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:19:32,672 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:19:32,672 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:19:32,672 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:19:32,673 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:19:32,680 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:19:32,680 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:19:32,681 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:19:32,681 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:19:32,681 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:19:32,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:19:32,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:19:32,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:19:32,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:19:32,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:19:32,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:19:32,683 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:19:32,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:19:32,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:19:32,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:19:32,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:19:32,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:19:32,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:19:32,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:19:32,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:19:32,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:19:32,687 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:19:32,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:19:32,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:19:32,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:19:32,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:19:32,688 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_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-10-24 11:19:32,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:19:32,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:19:32,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:19:32,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:19:32,985 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:19:32,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-24 11:19:33,056 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/data/20b0f155a/02c992eff1534ddd9dbe1c064029755d/FLAG1fcb2f841 [2021-10-24 11:19:33,698 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:19:33,699 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-24 11:19:33,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/data/20b0f155a/02c992eff1534ddd9dbe1c064029755d/FLAG1fcb2f841 [2021-10-24 11:19:33,891 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/data/20b0f155a/02c992eff1534ddd9dbe1c064029755d [2021-10-24 11:19:33,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:19:33,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:19:33,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:19:33,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:19:33,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:19:33,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:19:33" (1/1) ... [2021-10-24 11:19:33,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@223ab1e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:33, skipping insertion in model container [2021-10-24 11:19:33,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:19:33" (1/1) ... [2021-10-24 11:19:33,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:19:33,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:19:34,624 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_b815c605-4083-4f18-a705-8d0f4d57f2f8/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-24 11:19:34,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:19:34,709 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-24 11:19:34,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78889a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:34, skipping insertion in model container [2021-10-24 11:19:34,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:19:34,710 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 11:19:34,713 INFO L168 Benchmark]: Toolchain (without parser) took 816.14 ms. Allocated memory is still 117.4 MB. Free memory was 77.9 MB in the beginning and 82.4 MB in the end (delta: -4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:19:34,714 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 117.4 MB. Free memory was 96.9 MB in the beginning and 96.8 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:19:34,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 813.32 ms. Allocated memory is still 117.4 MB. Free memory was 77.7 MB in the beginning and 82.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:19:34,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 117.4 MB. Free memory was 96.9 MB in the beginning and 96.8 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 813.32 ms. Allocated memory is still 117.4 MB. Free memory was 77.7 MB in the beginning and 82.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:19:37,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:19:37,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:19:37,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:19:37,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:19:37,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:19:37,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:19:37,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:19:37,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:19:37,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:19:37,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:19:37,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:19:37,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:19:37,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:19:37,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:19:37,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:19:37,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:19:37,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:19:37,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:19:37,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:19:37,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:19:37,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:19:37,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:19:37,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:19:37,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:19:37,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:19:37,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:19:37,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:19:37,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:19:37,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:19:37,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:19:37,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:19:37,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:19:37,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:19:37,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:19:37,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:19:37,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:19:37,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:19:37,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:19:37,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:19:37,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:19:37,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-10-24 11:19:37,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:19:37,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:19:37,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:19:37,237 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:19:37,237 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:19:37,237 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:19:37,237 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:19:37,238 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:19:37,238 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:19:37,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:19:37,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:19:37,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:19:37,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:19:37,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:19:37,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:19:37,240 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 11:19:37,240 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 11:19:37,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:19:37,241 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:19:37,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:19:37,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:19:37,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 11:19:37,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:19:37,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:19:37,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:19:37,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:19:37,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:19:37,243 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 11:19:37,243 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 11:19:37,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:19:37,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:19:37,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:19:37,244 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_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-10-24 11:19:37,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:19:37,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:19:37,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:19:37,651 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:19:37,651 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:19:37,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-24 11:19:37,719 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/data/1427fd128/ad62cd7cc1ca412c8df4697b5603e031/FLAG73e3294c8 [2021-10-24 11:19:38,405 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:19:38,412 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-24 11:19:38,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/data/1427fd128/ad62cd7cc1ca412c8df4697b5603e031/FLAG73e3294c8 [2021-10-24 11:19:38,594 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/data/1427fd128/ad62cd7cc1ca412c8df4697b5603e031 [2021-10-24 11:19:38,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:19:38,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:19:38,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:19:38,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:19:38,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:19:38,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:19:38" (1/1) ... [2021-10-24 11:19:38,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c90effa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:38, skipping insertion in model container [2021-10-24 11:19:38,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:19:38" (1/1) ... [2021-10-24 11:19:38,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:19:38,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:19:39,299 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_b815c605-4083-4f18-a705-8d0f4d57f2f8/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-24 11:19:39,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:19:39,361 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 11:19:39,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:19:39,418 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_b815c605-4083-4f18-a705-8d0f4d57f2f8/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-24 11:19:39,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:19:39,484 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:19:39,532 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_b815c605-4083-4f18-a705-8d0f4d57f2f8/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-24 11:19:39,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:19:39,678 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:19:39,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:39 WrapperNode [2021-10-24 11:19:39,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:19:39,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:19:39,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:19:39,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:19:39,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:39" (1/1) ... [2021-10-24 11:19:39,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:39" (1/1) ... [2021-10-24 11:19:39,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:19:39,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:19:39,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:19:39,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:19:39,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:39" (1/1) ... [2021-10-24 11:19:39,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:39" (1/1) ... [2021-10-24 11:19:39,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:39" (1/1) ... [2021-10-24 11:19:39,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:39" (1/1) ... [2021-10-24 11:19:39,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:39" (1/1) ... [2021-10-24 11:19:39,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:39" (1/1) ... [2021-10-24 11:19:39,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:39" (1/1) ... [2021-10-24 11:19:39,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:19:39,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:19:39,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:19:39,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:19:39,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:39" (1/1) ... [2021-10-24 11:19:39,855 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:19:39,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:19:39,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:19:39,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:19:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-24 11:19:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 11:19:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:19:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-24 11:19:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-24 11:19:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 11:19:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 11:19:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 11:19:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-10-24 11:19:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 11:19:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-24 11:19:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-24 11:19:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:19:39,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:19:41,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:19:41,036 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-24 11:19:41,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:19:41 BoogieIcfgContainer [2021-10-24 11:19:41,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:19:41,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:19:41,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:19:41,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:19:41,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:19:38" (1/3) ... [2021-10-24 11:19:41,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1507ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:19:41, skipping insertion in model container [2021-10-24 11:19:41,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:19:39" (2/3) ... [2021-10-24 11:19:41,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1507ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:19:41, skipping insertion in model container [2021-10-24 11:19:41,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:19:41" (3/3) ... [2021-10-24 11:19:41,046 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-2.i [2021-10-24 11:19:41,051 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:19:41,052 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 11:19:41,098 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:19:41,105 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 11:19:41,105 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 11:19:41,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 76 states have internal predecessors, (122), 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) [2021-10-24 11:19:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-24 11:19:41,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:19:41,128 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:19:41,129 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:19:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:19:41,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1383985347, now seen corresponding path program 1 times [2021-10-24 11:19:41,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:19:41,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504597958] [2021-10-24 11:19:41,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:41,155 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:19:41,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:19:41,163 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:19:41,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 11:19:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:41,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 11:19:41,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:19:41,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:19:41,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:19:41,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504597958] [2021-10-24 11:19:41,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504597958] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:19:41,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:19:41,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 11:19:41,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076926145] [2021-10-24 11:19:41,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 11:19:41,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:19:41,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 11:19:41,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 11:19:41,663 INFO L87 Difference]: Start difference. First operand has 77 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 76 states have internal predecessors, (122), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-10-24 11:19:41,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:19:41,685 INFO L93 Difference]: Finished difference Result 150 states and 238 transitions. [2021-10-24 11:19:41,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 11:19:41,687 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2021-10-24 11:19:41,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:19:41,695 INFO L225 Difference]: With dead ends: 150 [2021-10-24 11:19:41,695 INFO L226 Difference]: Without dead ends: 26 [2021-10-24 11:19:41,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 11:19:41,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-24 11:19:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-24 11:19:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:19:41,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-10-24 11:19:41,727 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2021-10-24 11:19:41,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:19:41,728 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-10-24 11:19:41,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-10-24 11:19:41,728 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-10-24 11:19:41,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-24 11:19:41,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:19:41,729 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:19:41,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:41,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:19:41,944 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:19:41,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:19:41,945 INFO L82 PathProgramCache]: Analyzing trace with hash -502200470, now seen corresponding path program 1 times [2021-10-24 11:19:41,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:19:41,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590257709] [2021-10-24 11:19:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:41,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:19:41,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:19:41,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:19:41,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 11:19:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:42,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:19:42,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:19:42,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:19:42,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:19:42,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590257709] [2021-10-24 11:19:42,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590257709] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:19:42,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:19:42,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 11:19:42,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770813998] [2021-10-24 11:19:42,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:19:42,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:19:42,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:19:42,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:19:42,426 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2021-10-24 11:19:42,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:19:42,466 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2021-10-24 11:19:42,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:19:42,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 19 [2021-10-24 11:19:42,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:19:42,472 INFO L225 Difference]: With dead ends: 51 [2021-10-24 11:19:42,472 INFO L226 Difference]: Without dead ends: 29 [2021-10-24 11:19:42,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:19:42,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-24 11:19:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-24 11:19:42,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 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) [2021-10-24 11:19:42,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-10-24 11:19:42,480 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 19 [2021-10-24 11:19:42,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:19:42,480 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-10-24 11:19:42,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2021-10-24 11:19:42,481 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-10-24 11:19:42,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-24 11:19:42,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:19:42,482 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:19:42,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:42,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:19:42,704 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:19:42,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:19:42,705 INFO L82 PathProgramCache]: Analyzing trace with hash 325484390, now seen corresponding path program 1 times [2021-10-24 11:19:42,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:19:42,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414243396] [2021-10-24 11:19:42,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:42,707 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:19:42,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:19:42,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:19:42,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 11:19:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:43,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:19:43,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:19:43,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:19:43,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:19:43,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414243396] [2021-10-24 11:19:43,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414243396] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:19:43,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [136304198] [2021-10-24 11:19:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:43,292 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 11:19:43,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 11:19:43,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 11:19:43,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-24 11:19:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:43,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:19:43,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 11:19:43,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 11:19:43,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [136304198] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:19:43,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-24 11:19:43,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-10-24 11:19:43,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793737550] [2021-10-24 11:19:43,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:19:43,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:19:43,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:19:43,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-24 11:19:43,709 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2021-10-24 11:19:43,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:19:43,720 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-10-24 11:19:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:19:43,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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 23 [2021-10-24 11:19:43,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:19:43,722 INFO L225 Difference]: With dead ends: 38 [2021-10-24 11:19:43,722 INFO L226 Difference]: Without dead ends: 28 [2021-10-24 11:19:43,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 61.9ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-24 11:19:43,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-24 11:19:43,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-24 11:19:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 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) [2021-10-24 11:19:43,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-10-24 11:19:43,727 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-10-24 11:19:43,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:19:43,727 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-10-24 11:19:43,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2021-10-24 11:19:43,730 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-10-24 11:19:43,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-24 11:19:43,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:19:43,731 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:19:43,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:43,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:44,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:19:44,135 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:19:44,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:19:44,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1270235960, now seen corresponding path program 1 times [2021-10-24 11:19:44,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:19:44,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908014895] [2021-10-24 11:19:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:44,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:19:44,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:19:44,138 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:19:44,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 11:19:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:44,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:19:44,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:19:44,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:44,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:19:44,609 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:19:44,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908014895] [2021-10-24 11:19:44,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908014895] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:19:44,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [680128457] [2021-10-24 11:19:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:44,610 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 11:19:44,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 11:19:44,611 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 11:19:44,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-24 11:19:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:44,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 11:19:44,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 11:19:45,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 11:19:45,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [680128457] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:19:45,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-24 11:19:45,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-10-24 11:19:45,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620465616] [2021-10-24 11:19:45,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:19:45,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:19:45,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:19:45,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-24 11:19:45,103 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-10-24 11:19:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:19:45,122 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-10-24 11:19:45,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:19:45,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 24 [2021-10-24 11:19:45,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:19:45,130 INFO L225 Difference]: With dead ends: 38 [2021-10-24 11:19:45,131 INFO L226 Difference]: Without dead ends: 28 [2021-10-24 11:19:45,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.5ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-24 11:19:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-24 11:19:45,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-24 11:19:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:19:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-10-24 11:19:45,141 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 24 [2021-10-24 11:19:45,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:19:45,142 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-10-24 11:19:45,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-10-24 11:19:45,146 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-10-24 11:19:45,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-24 11:19:45,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:19:45,148 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:19:45,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:45,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:45,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:19:45,549 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:19:45,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:19:45,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1663262970, now seen corresponding path program 1 times [2021-10-24 11:19:45,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:19:45,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528268034] [2021-10-24 11:19:45,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:45,551 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:19:45,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:19:45,553 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:19:45,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 11:19:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:45,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:19:45,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:19:45,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:19:46,045 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:19:46,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528268034] [2021-10-24 11:19:46,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528268034] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:19:46,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1052764818] [2021-10-24 11:19:46,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:46,046 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 11:19:46,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 11:19:46,047 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 11:19:46,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-24 11:19:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:46,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:19:46,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:19:46,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:46,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:19:46,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1052764818] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:19:46,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694835325] [2021-10-24 11:19:46,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:46,664 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:19:46,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:19:46,666 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:19:46,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-24 11:19:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:46,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 11:19:46,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 11:19:47,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 11:19:47,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694835325] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:19:47,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-24 11:19:47,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 14 [2021-10-24 11:19:47,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421261574] [2021-10-24 11:19:47,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 11:19:47,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:19:47,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 11:19:47,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-24 11:19:47,302 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 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) [2021-10-24 11:19:47,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:19:47,642 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-10-24 11:19:47,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 11:19:47,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 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) Word has length 24 [2021-10-24 11:19:47,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:19:47,644 INFO L225 Difference]: With dead ends: 46 [2021-10-24 11:19:47,644 INFO L226 Difference]: Without dead ends: 32 [2021-10-24 11:19:47,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 299.8ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-24 11:19:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-24 11:19:47,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-10-24 11:19:47,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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) [2021-10-24 11:19:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-10-24 11:19:47,652 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2021-10-24 11:19:47,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:19:47,653 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-10-24 11:19:47,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 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) [2021-10-24 11:19:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-10-24 11:19:47,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 11:19:47,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:19:47,654 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:19:47,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:47,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:48,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:48,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:19:48,256 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:19:48,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:19:48,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1293773121, now seen corresponding path program 1 times [2021-10-24 11:19:48,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:19:48,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628578564] [2021-10-24 11:19:48,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:48,258 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:19:48,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:19:48,262 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:19:48,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 11:19:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:48,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:19:48,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:48,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 11:19:48,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 11:19:48,792 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:19:48,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628578564] [2021-10-24 11:19:48,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628578564] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:19:48,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1930682614] [2021-10-24 11:19:48,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:48,793 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 11:19:48,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 11:19:48,795 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 11:19:48,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-24 11:19:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:49,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:19:49,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:49,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 11:19:49,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:49,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 11:19:49,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1930682614] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:19:49,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071032758] [2021-10-24 11:19:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:49,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:19:49,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:19:49,489 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:19:49,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-24 11:19:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:49,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:19:49,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 11:19:49,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:50,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-24 11:19:50,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071032758] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:19:50,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-24 11:19:50,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5, 5] total 10 [2021-10-24 11:19:50,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722946538] [2021-10-24 11:19:50,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:19:50,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:19:50,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:19:50,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-24 11:19:50,017 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 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) [2021-10-24 11:19:50,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:19:50,051 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2021-10-24 11:19:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:19:50,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 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) Word has length 27 [2021-10-24 11:19:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:19:50,053 INFO L225 Difference]: With dead ends: 50 [2021-10-24 11:19:50,053 INFO L226 Difference]: Without dead ends: 32 [2021-10-24 11:19:50,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 68.3ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-24 11:19:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-24 11:19:50,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-24 11:19:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 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) [2021-10-24 11:19:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-10-24 11:19:50,059 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 27 [2021-10-24 11:19:50,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:19:50,059 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-10-24 11:19:50,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 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) [2021-10-24 11:19:50,060 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-10-24 11:19:50,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-24 11:19:50,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:19:50,061 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:19:50,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:50,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:50,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-10-24 11:19:50,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 11:19:50,672 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:19:50,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:19:50,673 INFO L82 PathProgramCache]: Analyzing trace with hash -737324797, now seen corresponding path program 1 times [2021-10-24 11:19:50,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:19:50,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971971302] [2021-10-24 11:19:50,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:50,674 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:19:50,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:19:50,674 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:19:50,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-24 11:19:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:51,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:19:51,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 11:19:51,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 11:19:51,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:19:51,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971971302] [2021-10-24 11:19:51,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971971302] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:19:51,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [238398461] [2021-10-24 11:19:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:51,198 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 11:19:51,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 11:19:51,200 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 11:19:51,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-24 11:19:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:51,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:19:51,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:51,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 11:19:51,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 11:19:51,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [238398461] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:19:51,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347223129] [2021-10-24 11:19:51,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:19:51,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:19:51,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:19:51,975 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:19:51,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-24 11:19:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:19:52,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:19:52,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:52,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 11:19:52,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 11:19:52,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347223129] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:19:52,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 11:19:52,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-24 11:19:52,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215260378] [2021-10-24 11:19:52,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 11:19:52,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:19:52,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 11:19:52,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 11:19:52,544 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 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) [2021-10-24 11:19:52,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:19:52,648 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2021-10-24 11:19:52,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 11:19:52,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 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 31 [2021-10-24 11:19:52,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:19:52,649 INFO L225 Difference]: With dead ends: 65 [2021-10-24 11:19:52,649 INFO L226 Difference]: Without dead ends: 40 [2021-10-24 11:19:52,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 70.8ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-24 11:19:52,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-24 11:19:52,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-24 11:19:52,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 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) [2021-10-24 11:19:52,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-10-24 11:19:52,655 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 31 [2021-10-24 11:19:52,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:19:52,655 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-10-24 11:19:52,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 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) [2021-10-24 11:19:52,656 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-10-24 11:19:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-24 11:19:52,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:19:52,657 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:19:52,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:52,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:53,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:53,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:19:53,263 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:19:53,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:19:53,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1549750533, now seen corresponding path program 2 times [2021-10-24 11:19:53,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:19:53,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539899110] [2021-10-24 11:19:53,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 11:19:53,264 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:19:53,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:19:53,265 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:19:53,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-24 11:19:53,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-24 11:19:53,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 11:19:53,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 11:19:53,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:19:53,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:19:53,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-10-24 11:19:54,461 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-24 11:19:54,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:19:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-24 11:19:54,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:19:54,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539899110] [2021-10-24 11:19:54,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539899110] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:19:54,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:19:54,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 11:19:54,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415249108] [2021-10-24 11:19:54,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:19:54,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:19:54,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:19:54,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:19:54,906 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:19:54,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:19:54,909 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-10-24 11:19:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:19:54,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-24 11:19:54,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:19:54,910 INFO L225 Difference]: With dead ends: 40 [2021-10-24 11:19:54,910 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 11:19:54,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:19:54,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 11:19:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 11:19:54,911 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) [2021-10-24 11:19:54,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 11:19:54,911 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-10-24 11:19:54,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:19:54,911 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 11:19:54,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:19:54,911 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 11:19:54,912 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 11:19:54,914 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:19:54,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-24 11:19:55,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:19:55,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 11:19:55,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:19:55,380 INFO L857 garLoopResultBuilder]: For program point L1505(line 1505) no Hoare annotation was computed. [2021-10-24 11:19:55,380 INFO L860 garLoopResultBuilder]: At program point L1439(lines 1421 1440) the Hoare annotation is: true [2021-10-24 11:19:55,380 INFO L857 garLoopResultBuilder]: For program point L1505-2(line 1505) no Hoare annotation was computed. [2021-10-24 11:19:55,380 INFO L860 garLoopResultBuilder]: At program point L1456(lines 1441 1457) the Hoare annotation is: true [2021-10-24 11:19:55,380 INFO L857 garLoopResultBuilder]: For program point L1357(lines 1357 1377) no Hoare annotation was computed. [2021-10-24 11:19:55,380 INFO L857 garLoopResultBuilder]: For program point L1357-1(lines 1357 1377) no Hoare annotation was computed. [2021-10-24 11:19:55,381 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 11:19:55,381 INFO L857 garLoopResultBuilder]: For program point L1606-2(lines 1606 1613) no Hoare annotation was computed. [2021-10-24 11:19:55,381 INFO L853 garLoopResultBuilder]: At program point L1606-3(lines 1606 1613) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (bvsge ULTIMATE.start_main_~argc~0 (_ bv1 32)) (= |#t~string44.offset| (_ bv0 32)) (= |#t~string45.offset| (_ bv0 32)) (not (= |#t~string44.base| |#t~string45.base|)) (bvsle ULTIMATE.start_main_~argc~0 (_ bv10000 32)) (not (= |#t~string45.base| (_ bv0 32))) (not (= |#t~string44.base| (_ bv0 32)))) [2021-10-24 11:19:55,381 INFO L857 garLoopResultBuilder]: For program point L1606-4(lines 1606 1613) no Hoare annotation was computed. [2021-10-24 11:19:55,381 INFO L860 garLoopResultBuilder]: At program point L1590(lines 1586 1591) the Hoare annotation is: true [2021-10-24 11:19:55,381 INFO L857 garLoopResultBuilder]: For program point L1491(lines 1491 1492) no Hoare annotation was computed. [2021-10-24 11:19:55,381 INFO L857 garLoopResultBuilder]: For program point L1359(lines 1359 1376) no Hoare annotation was computed. [2021-10-24 11:19:55,381 INFO L857 garLoopResultBuilder]: For program point L1343(line 1343) no Hoare annotation was computed. [2021-10-24 11:19:55,381 INFO L857 garLoopResultBuilder]: For program point L1343-2(line 1343) no Hoare annotation was computed. [2021-10-24 11:19:55,381 INFO L857 garLoopResultBuilder]: For program point L1410(lines 1410 1411) no Hoare annotation was computed. [2021-10-24 11:19:55,382 INFO L857 garLoopResultBuilder]: For program point L1427(lines 1427 1436) no Hoare annotation was computed. [2021-10-24 11:19:55,382 INFO L857 garLoopResultBuilder]: For program point L1427-2(lines 1422 1440) no Hoare annotation was computed. [2021-10-24 11:19:55,382 INFO L860 garLoopResultBuilder]: At program point L1510(lines 1497 1511) the Hoare annotation is: true [2021-10-24 11:19:55,382 INFO L857 garLoopResultBuilder]: For program point L1362(lines 1362 1375) no Hoare annotation was computed. [2021-10-24 11:19:55,382 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-24 11:19:55,382 INFO L857 garLoopResultBuilder]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2021-10-24 11:19:55,382 INFO L860 garLoopResultBuilder]: At program point L1478(lines 1462 1479) the Hoare annotation is: true [2021-10-24 11:19:55,382 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 11:19:55,382 INFO L860 garLoopResultBuilder]: At program point L1495(lines 1480 1496) the Hoare annotation is: true [2021-10-24 11:19:55,382 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-24 11:19:55,383 INFO L857 garLoopResultBuilder]: For program point L1611-2(lines 1611 1612) no Hoare annotation was computed. [2021-10-24 11:19:55,383 INFO L853 garLoopResultBuilder]: At program point L1611-3(lines 1611 1612) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (bvsge ULTIMATE.start_main_~argc~0 (_ bv1 32)) (= |#t~string44.offset| (_ bv0 32)) (bvslt ULTIMATE.start_main_~i~4 ULTIMATE.start_main_~argc~0) (= |#t~string45.offset| (_ bv0 32)) (not (= |#t~string44.base| |#t~string45.base|)) (bvsle ULTIMATE.start_main_~argc~0 (_ bv10000 32)) (not (= |#t~string45.base| (_ bv0 32))) (not (= |#t~string44.base| (_ bv0 32)))) [2021-10-24 11:19:55,383 INFO L857 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2021-10-24 11:19:55,383 INFO L857 garLoopResultBuilder]: For program point L1446(lines 1446 1453) no Hoare annotation was computed. [2021-10-24 11:19:55,383 INFO L857 garLoopResultBuilder]: For program point L1446-1(lines 1446 1453) no Hoare annotation was computed. [2021-10-24 11:19:55,383 INFO L860 garLoopResultBuilder]: At program point L1347(lines 1338 1350) the Hoare annotation is: true [2021-10-24 11:19:55,383 INFO L857 garLoopResultBuilder]: For program point L1364(lines 1364 1374) no Hoare annotation was computed. [2021-10-24 11:19:55,383 INFO L857 garLoopResultBuilder]: For program point L1447-1(lines 1447 1453) no Hoare annotation was computed. [2021-10-24 11:19:55,383 INFO L857 garLoopResultBuilder]: For program point L1447-3(lines 1447 1453) no Hoare annotation was computed. [2021-10-24 11:19:55,384 INFO L860 garLoopResultBuilder]: At program point L1447-4(lines 1447 1453) the Hoare annotation is: true [2021-10-24 11:19:55,384 INFO L857 garLoopResultBuilder]: For program point L1596-2(lines 1596 1597) no Hoare annotation was computed. [2021-10-24 11:19:55,384 INFO L853 garLoopResultBuilder]: At program point L1596-3(lines 1596 1597) the Hoare annotation is: (and (= |#t~string44.offset| (_ bv0 32)) (= |#t~string45.offset| (_ bv0 32)) (not (= |#t~string44.base| |#t~string45.base|)) (not (= |#t~string45.base| (_ bv0 32))) (not (= |#t~string44.base| (_ bv0 32)))) [2021-10-24 11:19:55,384 INFO L857 garLoopResultBuilder]: For program point L1596-4(lines 1596 1597) no Hoare annotation was computed. [2021-10-24 11:19:55,384 INFO L857 garLoopResultBuilder]: For program point L1431(lines 1431 1434) no Hoare annotation was computed. [2021-10-24 11:19:55,384 INFO L857 garLoopResultBuilder]: For program point L1431-2(lines 1430 1436) no Hoare annotation was computed. [2021-10-24 11:19:55,384 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-24 11:19:55,384 INFO L857 garLoopResultBuilder]: For program point L1432(line 1432) no Hoare annotation was computed. [2021-10-24 11:19:55,384 INFO L857 garLoopResultBuilder]: For program point L1432-2(line 1432) no Hoare annotation was computed. [2021-10-24 11:19:55,385 INFO L857 garLoopResultBuilder]: For program point L1482(lines 1482 1494) no Hoare annotation was computed. [2021-10-24 11:19:55,385 INFO L857 garLoopResultBuilder]: For program point L1482-1(lines 1482 1494) no Hoare annotation was computed. [2021-10-24 11:19:55,385 INFO L857 garLoopResultBuilder]: For program point L1449(lines 1449 1450) no Hoare annotation was computed. [2021-10-24 11:19:55,385 INFO L857 garLoopResultBuilder]: For program point L1400(lines 1400 1413) no Hoare annotation was computed. [2021-10-24 11:19:55,385 INFO L857 garLoopResultBuilder]: For program point L1466-2(lines 1466 1477) no Hoare annotation was computed. [2021-10-24 11:19:55,385 INFO L857 garLoopResultBuilder]: For program point L1367(lines 1367 1373) no Hoare annotation was computed. [2021-10-24 11:19:55,385 INFO L857 garLoopResultBuilder]: For program point L1400-1(lines 1400 1413) no Hoare annotation was computed. [2021-10-24 11:19:55,385 INFO L860 garLoopResultBuilder]: At program point L1466-3(lines 1466 1477) the Hoare annotation is: true [2021-10-24 11:19:55,385 INFO L857 garLoopResultBuilder]: For program point L1334(lines 1334 1392) no Hoare annotation was computed. [2021-10-24 11:19:55,385 INFO L857 garLoopResultBuilder]: For program point L1466-4(lines 1466 1477) no Hoare annotation was computed. [2021-10-24 11:19:55,385 INFO L857 garLoopResultBuilder]: For program point L1334-1(lines 1325 1420) no Hoare annotation was computed. [2021-10-24 11:19:55,385 INFO L857 garLoopResultBuilder]: For program point L1615-2(lines 1615 1616) no Hoare annotation was computed. [2021-10-24 11:19:55,385 INFO L860 garLoopResultBuilder]: At program point L1615-3(lines 1615 1616) the Hoare annotation is: true [2021-10-24 11:19:55,385 INFO L857 garLoopResultBuilder]: For program point L1615-4(lines 1615 1616) no Hoare annotation was computed. [2021-10-24 11:19:55,386 INFO L857 garLoopResultBuilder]: For program point L1351-1(lines 1351 1385) no Hoare annotation was computed. [2021-10-24 11:19:55,386 INFO L857 garLoopResultBuilder]: For program point L1484(lines 1484 1493) no Hoare annotation was computed. [2021-10-24 11:19:55,386 INFO L857 garLoopResultBuilder]: For program point L1501-1(lines 1501 1509) no Hoare annotation was computed. [2021-10-24 11:19:55,386 INFO L857 garLoopResultBuilder]: For program point L1435-1(line 1435) no Hoare annotation was computed. [2021-10-24 11:19:55,386 INFO L860 garLoopResultBuilder]: At program point L1501-3(lines 1501 1509) the Hoare annotation is: true [2021-10-24 11:19:55,386 INFO L857 garLoopResultBuilder]: For program point L1369(lines 1369 1372) no Hoare annotation was computed. [2021-10-24 11:19:55,386 INFO L857 garLoopResultBuilder]: For program point L1501-4(lines 1501 1509) no Hoare annotation was computed. [2021-10-24 11:19:55,386 INFO L860 garLoopResultBuilder]: At program point L1419(lines 1324 1420) the Hoare annotation is: true [2021-10-24 11:19:55,386 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-24 11:19:55,386 INFO L857 garLoopResultBuilder]: For program point L1469(lines 1469 1474) no Hoare annotation was computed. [2021-10-24 11:19:55,386 INFO L857 garLoopResultBuilder]: For program point L1403(lines 1403 1412) no Hoare annotation was computed. [2021-10-24 11:19:55,387 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1371) no Hoare annotation was computed. [2021-10-24 11:19:55,387 INFO L857 garLoopResultBuilder]: For program point L1387(lines 1387 1391) no Hoare annotation was computed. [2021-10-24 11:19:55,387 INFO L857 garLoopResultBuilder]: For program point L1371(line 1371) no Hoare annotation was computed. [2021-10-24 11:19:55,387 INFO L857 garLoopResultBuilder]: For program point L1338(lines 1338 1350) no Hoare annotation was computed. [2021-10-24 11:19:55,387 INFO L857 garLoopResultBuilder]: For program point L1338-2(lines 1335 1392) no Hoare annotation was computed. [2021-10-24 11:19:55,387 INFO L857 garLoopResultBuilder]: For program point L1504(lines 1504 1507) no Hoare annotation was computed. [2021-10-24 11:19:55,387 INFO L857 garLoopResultBuilder]: For program point L1471(lines 1471 1472) no Hoare annotation was computed. [2021-10-24 11:19:55,387 INFO L860 garLoopResultBuilder]: At program point L1620(lines 1592 1621) the Hoare annotation is: true [2021-10-24 11:19:55,393 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:19:55,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:19:55 BoogieIcfgContainer [2021-10-24 11:19:55,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:19:55,409 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:19:55,409 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:19:55,409 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:19:55,410 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:19:41" (3/4) ... [2021-10-24 11:19:55,412 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 11:19:55,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2021-10-24 11:19:55,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-24 11:19:55,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-24 11:19:55,430 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 11:19:55,430 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 11:19:55,431 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 11:19:55,501 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 11:19:55,502 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:19:55,503 INFO L168 Benchmark]: Toolchain (without parser) took 16902.76 ms. Allocated memory was 62.9 MB in the beginning and 130.0 MB in the end (delta: 67.1 MB). Free memory was 39.7 MB in the beginning and 63.9 MB in the end (delta: -24.2 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2021-10-24 11:19:55,503 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 62.9 MB. Free memory is still 43.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:19:55,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1077.35 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 39.6 MB in the beginning and 48.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2021-10-24 11:19:55,504 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.81 ms. Allocated memory is still 77.6 MB. Free memory was 48.8 MB in the beginning and 44.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 11:19:55,505 INFO L168 Benchmark]: Boogie Preprocessor took 77.92 ms. Allocated memory is still 77.6 MB. Free memory was 44.6 MB in the beginning and 39.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:19:55,505 INFO L168 Benchmark]: RCFGBuilder took 1192.57 ms. Allocated memory is still 77.6 MB. Free memory was 39.8 MB in the beginning and 47.3 MB in the end (delta: -7.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:19:55,506 INFO L168 Benchmark]: TraceAbstraction took 14368.06 ms. Allocated memory was 77.6 MB in the beginning and 130.0 MB in the end (delta: 52.4 MB). Free memory was 46.9 MB in the beginning and 71.3 MB in the end (delta: -24.4 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. [2021-10-24 11:19:55,506 INFO L168 Benchmark]: Witness Printer took 93.12 ms. Allocated memory is still 130.0 MB. Free memory was 71.3 MB in the beginning and 63.9 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:19:55,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 62.9 MB. Free memory is still 43.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1077.35 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 39.6 MB in the beginning and 48.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.81 ms. Allocated memory is still 77.6 MB. Free memory was 48.8 MB in the beginning and 44.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.92 ms. Allocated memory is still 77.6 MB. Free memory was 44.6 MB in the beginning and 39.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1192.57 ms. Allocated memory is still 77.6 MB. Free memory was 39.8 MB in the beginning and 47.3 MB in the end (delta: -7.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14368.06 ms. Allocated memory was 77.6 MB in the beginning and 130.0 MB in the end (delta: 52.4 MB). Free memory was 46.9 MB in the beginning and 71.3 MB in the end (delta: -24.4 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. * Witness Printer took 93.12 ms. Allocated memory is still 130.0 MB. Free memory was 71.3 MB in the beginning and 63.9 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 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: 1371]: 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, 77 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14294.8ms, OverallIterations: 8, TraceHistogramMax: 6, EmptinessCheckTime: 20.2ms, AutomataDifference: 647.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 263.3ms, InitialAbstractionConstructionTime: 10.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 282 SDtfs, 85 SDslu, 279 SDs, 0 SdLazy, 78 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 292.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 807 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 620.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=0, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 49.9ms AutomataMinimizationTime, 8 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 16 LocationsWithAnnotation, 16 PreInvPairs, 40 NumberOfFragments, 91 HoareAnnotationTreeSize, 16 FomulaSimplifications, 178 FormulaSimplificationTreeSizeReduction, 131.9ms HoareSimplificationTime, 16 FomulaSimplificationsInter, 114 FormulaSimplificationTreeSizeReductionInter, 124.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 412.9ms SsaConstructionTime, 2033.3ms SatisfiabilityAnalysisTime, 4205.7ms InterpolantComputationTime, 417 NumberOfCodeBlocks, 398 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 802 ConstructedInterpolants, 0 QuantifiedInterpolants, 1990 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2584 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 32 InterpolantComputations, 14 PerfectInterpolantSequences, 150/222 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 1 specifications checked. All of them hold - InvariantResult [Line: 1501]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1611]: Loop Invariant Derived loop invariant: (((((((cond == 1bv32 && ~bvsge64(argc, 1bv32)) && "--" == 0bv32) && ~bvslt64(i, argc)) && "--" == 0bv32) && !("--" == "--")) && ~bvsle32(argc, 10000bv32)) && !("--" == 0bv32)) && !("--" == 0bv32) - InvariantResult [Line: 1462]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1615]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1596]: Loop Invariant Derived loop invariant: ((("--" == 0bv32 && "--" == 0bv32) && !("--" == "--")) && !("--" == 0bv32)) && !("--" == 0bv32) - InvariantResult [Line: 1592]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1586]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1606]: Loop Invariant Derived loop invariant: ((((((cond == 1bv32 && ~bvsge64(argc, 1bv32)) && "--" == 0bv32) && "--" == 0bv32) && !("--" == "--")) && ~bvsle32(argc, 10000bv32)) && !("--" == 0bv32)) && !("--" == 0bv32) - InvariantResult [Line: 1421]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1447]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1324]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1466]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1441]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1480]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1338]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1497]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-24 11:19:55,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b815c605-4083-4f18-a705-8d0f4d57f2f8/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...