./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 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/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_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF --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 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:39:49,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:39:49,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:39:49,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:39:49,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:39:49,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:39:49,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:39:49,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:39:49,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:39:49,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:39:49,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:39:49,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:39:49,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:39:49,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:39:49,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:39:49,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:39:49,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:39:49,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:39:49,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:39:49,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:39:49,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:39:49,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:39:49,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:39:49,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:39:49,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:39:49,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:39:49,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:39:49,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:39:49,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:39:49,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:39:49,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:39:49,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:39:49,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:39:49,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:39:49,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:39:49,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:39:49,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:39:49,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:39:49,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:39:49,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:39:49,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:39:49,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:39:49,813 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:39:49,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:39:49,819 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:39:49,819 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:39:49,819 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:39:49,820 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:39:49,820 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:39:49,820 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:39:49,821 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:39:49,821 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:39:49,828 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:39:49,828 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:39:49,829 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:39:49,829 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:39:49,829 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:39:49,829 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:39:49,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:39:49,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:39:49,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:39:49,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:39:49,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:39:49,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:39:49,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:39:49,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:39:49,832 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:39:49,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:39:49,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:39:49,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:39:49,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:39:49,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:39:49,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:39:49,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:39:49,836 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:39:49,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:39:49,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:39:49,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:39:49,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:39:49,837 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_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-11-12 23:39:50,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:39:50,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:39:50,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:39:50,141 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:39:50,142 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:39:50,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-12 23:39:50,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/data/2270e4d69/f345cd493dbe4f0db93d8c20fdcc9ae4/FLAG34ca78bfd [2021-11-12 23:39:50,930 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:39:50,931 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-12 23:39:50,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/data/2270e4d69/f345cd493dbe4f0db93d8c20fdcc9ae4/FLAG34ca78bfd [2021-11-12 23:39:51,165 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/data/2270e4d69/f345cd493dbe4f0db93d8c20fdcc9ae4 [2021-11-12 23:39:51,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:39:51,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:39:51,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:39:51,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:39:51,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:39:51,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:39:51" (1/1) ... [2021-11-12 23:39:51,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e31c13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:51, skipping insertion in model container [2021-11-12 23:39:51,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:39:51" (1/1) ... [2021-11-12 23:39:51,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:39:51,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:39:51,874 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_ef907204-ca25-440f-9ef8-f0559823a8b7/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-12 23:39:51,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:39:51,934 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) [2021-11-12 23:39:51,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@67be8b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:51, skipping insertion in model container [2021-11-12 23:39:51,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:39:51,936 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:39:51,938 INFO L158 Benchmark]: Toolchain (without parser) took 765.59ms. Allocated memory is still 146.8MB. Free memory was 108.5MB in the beginning and 111.4MB in the end (delta: -2.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:39:51,939 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 92.3MB. Free memory was 62.3MB in the beginning and 62.3MB in the end (delta: 30.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:39:51,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 760.34ms. Allocated memory is still 146.8MB. Free memory was 108.2MB in the beginning and 112.1MB in the end (delta: -4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:39:51,941 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 92.3MB. Free memory was 62.3MB in the beginning and 62.3MB in the end (delta: 30.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 760.34ms. Allocated memory is still 146.8MB. Free memory was 108.2MB in the beginning and 112.1MB in the end (delta: -4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/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_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF --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 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:39:54,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:39:54,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:39:54,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:39:54,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:39:54,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:39:54,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:39:54,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:39:54,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:39:54,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:39:54,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:39:54,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:39:54,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:39:54,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:39:54,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:39:54,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:39:54,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:39:54,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:39:54,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:39:54,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:39:54,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:39:54,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:39:54,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:39:54,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:39:54,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:39:54,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:39:54,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:39:54,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:39:54,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:39:54,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:39:54,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:39:54,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:39:54,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:39:54,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:39:54,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:39:54,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:39:54,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:39:54,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:39:54,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:39:54,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:39:54,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:39:54,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:39:54,411 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:39:54,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:39:54,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:39:54,414 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:39:54,414 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:39:54,414 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:39:54,414 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:39:54,414 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:39:54,415 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:39:54,416 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:39:54,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:39:54,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:39:54,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:39:54,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:39:54,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:39:54,419 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:39:54,419 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:39:54,420 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:39:54,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:39:54,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:39:54,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:39:54,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:39:54,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:39:54,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:39:54,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:39:54,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:39:54,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:39:54,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:39:54,422 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:39:54,422 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:39:54,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:39:54,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:39:54,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:39:54,423 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_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-11-12 23:39:54,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:39:54,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:39:54,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:39:54,839 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:39:54,840 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:39:54,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-12 23:39:54,920 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/data/df833a02f/bf9e8b4ffe7348ef91785c484926019a/FLAGcce38f64a [2021-11-12 23:39:55,643 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:39:55,648 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-12 23:39:55,676 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/data/df833a02f/bf9e8b4ffe7348ef91785c484926019a/FLAGcce38f64a [2021-11-12 23:39:55,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/data/df833a02f/bf9e8b4ffe7348ef91785c484926019a [2021-11-12 23:39:55,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:39:55,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:39:55,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:39:55,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:39:55,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:39:55,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:39:55" (1/1) ... [2021-11-12 23:39:55,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10cb02a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:55, skipping insertion in model container [2021-11-12 23:39:55,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:39:55" (1/1) ... [2021-11-12 23:39:55,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:39:55,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:39:56,874 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_ef907204-ca25-440f-9ef8-f0559823a8b7/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-12 23:39:56,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:39:56,989 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:39:57,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:39:57,076 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_ef907204-ca25-440f-9ef8-f0559823a8b7/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-12 23:39:57,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:39:57,113 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:39:57,162 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_ef907204-ca25-440f-9ef8-f0559823a8b7/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-12 23:39:57,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:39:57,334 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:39:57,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:57 WrapperNode [2021-11-12 23:39:57,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:39:57,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:39:57,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:39:57,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:39:57,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:57" (1/1) ... [2021-11-12 23:39:57,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:57" (1/1) ... [2021-11-12 23:39:57,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:39:57,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:39:57,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:39:57,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:39:57,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:57" (1/1) ... [2021-11-12 23:39:57,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:57" (1/1) ... [2021-11-12 23:39:57,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:57" (1/1) ... [2021-11-12 23:39:57,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:57" (1/1) ... [2021-11-12 23:39:57,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:57" (1/1) ... [2021-11-12 23:39:57,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:57" (1/1) ... [2021-11-12 23:39:57,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:57" (1/1) ... [2021-11-12 23:39:57,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:39:57,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:39:57,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:39:57,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:39:57,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:57" (1/1) ... [2021-11-12 23:39:57,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:39:57,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:39:57,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:39:57,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:39:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:39:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:39:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:39:57,679 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:39:57,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:39:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:39:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:39:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:39:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:39:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:39:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:39:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:39:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-12 23:39:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:39:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:39:57,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:39:58,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:39:58,869 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-12 23:39:58,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:39:58 BoogieIcfgContainer [2021-11-12 23:39:58,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:39:58,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:39:58,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:39:58,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:39:58,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:39:55" (1/3) ... [2021-11-12 23:39:58,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b72b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:39:58, skipping insertion in model container [2021-11-12 23:39:58,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:39:57" (2/3) ... [2021-11-12 23:39:58,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b72b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:39:58, skipping insertion in model container [2021-11-12 23:39:58,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:39:58" (3/3) ... [2021-11-12 23:39:58,883 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-2.i [2021-11-12 23:39:58,888 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:39:58,889 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:39:58,978 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:39:58,986 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 [2021-11-12 23:39:58,986 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:39:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 76 states have (on average 1.605263157894737) internal successors, (122), 77 states have internal predecessors, (122), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:39:59,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 23:39:59,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:39:59,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:39:59,014 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:39:59,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:39:59,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1621105239, now seen corresponding path program 1 times [2021-11-12 23:39:59,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:39:59,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408176922] [2021-11-12 23:39:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:39:59,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:39:59,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:39:59,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:39:59,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:39:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:39:59,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:39:59,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:39:59,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:39:59,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:39:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:39:59,536 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:39:59,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408176922] [2021-11-12 23:39:59,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408176922] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:39:59,538 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:39:59,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:39:59,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540679691] [2021-11-12 23:39:59,541 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:39:59,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:39:59,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:39:59,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:39:59,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:39:59,584 INFO L87 Difference]: Start difference. First operand has 81 states, 76 states have (on average 1.605263157894737) internal successors, (122), 77 states have internal predecessors, (122), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:39:59,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:39:59,627 INFO L93 Difference]: Finished difference Result 158 states and 248 transitions. [2021-11-12 23:39:59,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:39:59,631 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-11-12 23:39:59,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:39:59,640 INFO L225 Difference]: With dead ends: 158 [2021-11-12 23:39:59,641 INFO L226 Difference]: Without dead ends: 30 [2021-11-12 23:39:59,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:39:59,661 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:39:59,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 3.87ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:39:59,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-12 23:39:59,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-12 23:39:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:39:59,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-11-12 23:39:59,709 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 23 [2021-11-12 23:39:59,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:39:59,710 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-11-12 23:39:59,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:39:59,711 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-11-12 23:39:59,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 23:39:59,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:39:59,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:39:59,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:39:59,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:39:59,930 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:39:59,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:39:59,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2100561404, now seen corresponding path program 1 times [2021-11-12 23:39:59,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:39:59,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808018046] [2021-11-12 23:39:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:39:59,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:39:59,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:39:59,934 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:39:59,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:40:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:00,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:40:00,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:40:00,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:40:00,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:40:00,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808018046] [2021-11-12 23:40:00,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808018046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:40:00,373 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:40:00,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:40:00,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183274] [2021-11-12 23:40:00,375 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:40:00,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:40:00,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:40:00,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:40:00,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:40:00,380 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:40:00,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:40:00,425 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2021-11-12 23:40:00,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:40:00,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-11-12 23:40:00,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:40:00,434 INFO L225 Difference]: With dead ends: 59 [2021-11-12 23:40:00,434 INFO L226 Difference]: Without dead ends: 33 [2021-11-12 23:40:00,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:40:00,437 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.55ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.66ms IncrementalHoareTripleChecker+Time [2021-11-12 23:40:00,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 92 Invalid, 9 Unknown, 0 Unchecked, 2.55ms Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 24.66ms Time] [2021-11-12 23:40:00,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-12 23:40:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-12 23:40:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:40:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-11-12 23:40:00,458 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 23 [2021-11-12 23:40:00,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:40:00,458 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-11-12 23:40:00,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:40:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-11-12 23:40:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:40:00,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:40:00,463 INFO L514 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] [2021-11-12 23:40:00,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:00,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:40:00,677 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:40:00,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:40:00,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2001670656, now seen corresponding path program 1 times [2021-11-12 23:40:00,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:40:00,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866065327] [2021-11-12 23:40:00,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:00,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:40:00,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:40:00,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:40:00,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:40:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:00,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:40:00,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:40:01,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:40:01,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:40:01,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866065327] [2021-11-12 23:40:01,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866065327] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:40:01,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [428321804] [2021-11-12 23:40:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:01,154 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:40:01,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:40:01,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:40:01,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-12 23:40:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:01,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:40:01,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:40:01,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:40:01,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [428321804] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:40:01,528 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:40:01,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-12 23:40:01,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153588727] [2021-11-12 23:40:01,529 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:40:01,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:40:01,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:40:01,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:40:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:40:01,534 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:40:01,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:40:01,563 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-11-12 23:40:01,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:40:01,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-11-12 23:40:01,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:40:01,567 INFO L225 Difference]: With dead ends: 42 [2021-11-12 23:40:01,568 INFO L226 Difference]: Without dead ends: 32 [2021-11-12 23:40:01,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:40:01,569 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:40:01,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 3 Unknown, 0 Unchecked, 3.18ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 11.67ms Time] [2021-11-12 23:40:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-12 23:40:01,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-12 23:40:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:40:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-11-12 23:40:01,581 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2021-11-12 23:40:01,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:40:01,582 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-11-12 23:40:01,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:40:01,582 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-11-12 23:40:01,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-12 23:40:01,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:40:01,584 INFO L514 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, 1] [2021-11-12 23:40:01,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:01,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-11-12 23:40:01,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:40:02,000 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:40:02,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:40:02,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2085429667, now seen corresponding path program 1 times [2021-11-12 23:40:02,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:40:02,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403356395] [2021-11-12 23:40:02,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:02,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:40:02,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:40:02,004 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:40:02,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:40:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:02,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:40:02,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:40:02,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:40:02,455 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:40:02,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403356395] [2021-11-12 23:40:02,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403356395] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:40:02,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2098276809] [2021-11-12 23:40:02,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:02,456 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:40:02,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:40:02,457 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:40:02,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-12 23:40:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:02,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:40:02,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:40:03,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:40:03,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2098276809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:40:03,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885777448] [2021-11-12 23:40:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:03,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:40:03,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:40:03,105 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:40:03,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-12 23:40:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:03,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:40:03,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:40:03,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:03,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:40:03,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885777448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:40:03,717 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-12 23:40:03,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [5, 5, 5, 5] total 15 [2021-11-12 23:40:03,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490297528] [2021-11-12 23:40:03,717 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:40:03,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:40:03,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:40:03,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:40:03,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:40:03,720 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:40:03,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:40:03,992 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2021-11-12 23:40:03,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:40:03,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2021-11-12 23:40:03,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:40:03,994 INFO L225 Difference]: With dead ends: 50 [2021-11-12 23:40:03,994 INFO L226 Difference]: Without dead ends: 36 [2021-11-12 23:40:03,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:40:03,996 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 63 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 178.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.44ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 212.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:40:03,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 74 Invalid, 34 Unknown, 0 Unchecked, 1.44ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 212.43ms Time] [2021-11-12 23:40:03,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-12 23:40:04,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2021-11-12 23:40:04,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:40:04,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-11-12 23:40:04,001 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2021-11-12 23:40:04,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:40:04,001 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-11-12 23:40:04,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:40:04,002 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-11-12 23:40:04,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-12 23:40:04,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:40:04,003 INFO L514 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, 1, 1, 1, 1] [2021-11-12 23:40:04,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-12 23:40:04,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:04,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:04,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:40:04,607 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:40:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:40:04,607 INFO L85 PathProgramCache]: Analyzing trace with hash -189942503, now seen corresponding path program 1 times [2021-11-12 23:40:04,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:40:04,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071268281] [2021-11-12 23:40:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:04,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:40:04,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:40:04,609 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:40:04,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:40:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:04,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:40:04,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:40:04,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:40:05,065 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:40:05,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071268281] [2021-11-12 23:40:05,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071268281] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:40:05,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1030115607] [2021-11-12 23:40:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:05,066 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:40:05,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:40:05,070 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:40:05,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-12 23:40:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:05,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:40:05,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:40:05,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:40:05,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1030115607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:40:05,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886369868] [2021-11-12 23:40:05,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:05,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:40:05,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:40:05,790 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:40:05,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-12 23:40:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:06,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:40:06,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:40:06,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:40:06,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886369868] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:40:06,165 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-12 23:40:06,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5, 5] total 10 [2021-11-12 23:40:06,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032366021] [2021-11-12 23:40:06,166 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:40:06,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:40:06,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:40:06,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:40:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:40:06,167 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:40:06,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:40:06,213 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2021-11-12 23:40:06,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:40:06,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-12 23:40:06,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:40:06,216 INFO L225 Difference]: With dead ends: 54 [2021-11-12 23:40:06,216 INFO L226 Difference]: Without dead ends: 36 [2021-11-12 23:40:06,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:40:06,217 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.69ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:40:06,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 84 Invalid, 11 Unknown, 0 Unchecked, 0.69ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 41.52ms Time] [2021-11-12 23:40:06,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-12 23:40:06,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-12 23:40:06,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:40:06,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-11-12 23:40:06,222 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 31 [2021-11-12 23:40:06,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:40:06,223 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-11-12 23:40:06,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:40:06,223 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-11-12 23:40:06,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-12 23:40:06,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:40:06,224 INFO L514 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, 1, 1, 1, 1] [2021-11-12 23:40:06,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:06,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-12 23:40:06,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:06,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:40:06,839 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:40:06,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:40:06,840 INFO L85 PathProgramCache]: Analyzing trace with hash -468772067, now seen corresponding path program 1 times [2021-11-12 23:40:06,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:40:06,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628795390] [2021-11-12 23:40:06,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:06,841 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:40:06,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:40:06,842 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:40:06,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:40:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:07,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:40:07,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-12 23:40:07,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-12 23:40:07,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:40:07,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628795390] [2021-11-12 23:40:07,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628795390] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:40:07,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1039341200] [2021-11-12 23:40:07,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:07,337 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:40:07,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:40:07,342 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:40:07,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 23:40:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:07,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:40:07,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-12 23:40:07,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-12 23:40:07,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1039341200] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:40:07,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276749578] [2021-11-12 23:40:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:07,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:40:07,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:40:07,919 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:40:07,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-12 23:40:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:08,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:40:08,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-12 23:40:08,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:08,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-12 23:40:08,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276749578] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:40:08,296 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:40:08,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-12 23:40:08,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644656504] [2021-11-12 23:40:08,296 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:40:08,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:40:08,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:40:08,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:40:08,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:40:08,298 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:40:08,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:40:08,451 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2021-11-12 23:40:08,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:40:08,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2021-11-12 23:40:08,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:40:08,454 INFO L225 Difference]: With dead ends: 73 [2021-11-12 23:40:08,454 INFO L226 Difference]: Without dead ends: 44 [2021-11-12 23:40:08,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:40:08,455 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.91ms IncrementalHoareTripleChecker+Time [2021-11-12 23:40:08,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 114 Invalid, 35 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 102.91ms Time] [2021-11-12 23:40:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-12 23:40:08,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-11-12 23:40:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:40:08,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2021-11-12 23:40:08,469 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 35 [2021-11-12 23:40:08,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:40:08,470 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2021-11-12 23:40:08,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:40:08,471 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2021-11-12 23:40:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-12 23:40:08,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:40:08,477 INFO L514 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, 1, 1, 1, 1] [2021-11-12 23:40:08,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:08,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-12 23:40:08,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:09,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:40:09,091 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:40:09,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:40:09,092 INFO L85 PathProgramCache]: Analyzing trace with hash -213010155, now seen corresponding path program 2 times [2021-11-12 23:40:09,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:40:09,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70195133] [2021-11-12 23:40:09,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:40:09,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:40:09,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:40:09,095 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:40:09,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:40:09,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 23:40:09,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:40:09,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:40:09,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:09,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:09,620 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 19 treesize of output 17 [2021-11-12 23:40:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 23:40:10,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:10,666 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 23:40:10,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:40:10,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70195133] [2021-11-12 23:40:10,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70195133] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:40:10,667 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:40:10,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-12 23:40:10,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896549148] [2021-11-12 23:40:10,667 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:40:10,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:40:10,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:40:10,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:40:10,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:40:10,668 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:40:10,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:40:10,674 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-11-12 23:40:10,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:40:10,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2021-11-12 23:40:10,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:40:10,676 INFO L225 Difference]: With dead ends: 44 [2021-11-12 23:40:10,676 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 23:40:10,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:40:10,677 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.21ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:40:10,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 0.21ms Time], IncrementalHoareTripleChecker [1 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 2.25ms Time] [2021-11-12 23:40:10,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 23:40:10,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 23:40:10,679 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) [2021-11-12 23:40:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 23:40:10,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2021-11-12 23:40:10,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:40:10,679 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 23:40:10,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:40:10,680 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 23:40:10,680 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 23:40:10,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:40:10,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:10,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:40:10,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 23:40:11,116 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-11-12 23:40:11,116 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-11-12 23:40:11,117 INFO L858 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-11-12 23:40:11,117 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-11-12 23:40:11,117 INFO L858 garLoopResultBuilder]: For program point L1505(line 1505) no Hoare annotation was computed. [2021-11-12 23:40:11,117 INFO L861 garLoopResultBuilder]: At program point L1439(lines 1421 1440) the Hoare annotation is: true [2021-11-12 23:40:11,117 INFO L858 garLoopResultBuilder]: For program point L1505-2(line 1505) no Hoare annotation was computed. [2021-11-12 23:40:11,117 INFO L861 garLoopResultBuilder]: At program point L1456(lines 1441 1457) the Hoare annotation is: true [2021-11-12 23:40:11,117 INFO L858 garLoopResultBuilder]: For program point L1357(lines 1357 1377) no Hoare annotation was computed. [2021-11-12 23:40:11,117 INFO L858 garLoopResultBuilder]: For program point L1357-1(lines 1357 1377) no Hoare annotation was computed. [2021-11-12 23:40:11,117 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 23:40:11,118 INFO L861 garLoopResultBuilder]: At program point L1589(line 1589) the Hoare annotation is: true [2021-11-12 23:40:11,122 INFO L858 garLoopResultBuilder]: For program point L1589-1(line 1589) no Hoare annotation was computed. [2021-11-12 23:40:11,122 INFO L858 garLoopResultBuilder]: For program point L1606-2(lines 1606 1613) no Hoare annotation was computed. [2021-11-12 23:40:11,122 INFO L854 garLoopResultBuilder]: At program point L1606-3(lines 1606 1613) the Hoare annotation is: (and (bvsge |ULTIMATE.start_main_~argc~0#1| (_ bv1 32)) (not (= |#t~string45.base| |#t~string44.base|)) (= (_ bv0 64) |#t~string45.offset|) (bvsle |ULTIMATE.start_main_~argc~0#1| (_ bv10000 32)) (not (= (_ bv0 64) |#t~string45.base|)) (= (_ bv0 64) |#t~string44.offset|)) [2021-11-12 23:40:11,122 INFO L858 garLoopResultBuilder]: For program point L1606-4(lines 1606 1613) no Hoare annotation was computed. [2021-11-12 23:40:11,122 INFO L861 garLoopResultBuilder]: At program point L1590(lines 1586 1591) the Hoare annotation is: true [2021-11-12 23:40:11,122 INFO L858 garLoopResultBuilder]: For program point L1491(lines 1491 1492) no Hoare annotation was computed. [2021-11-12 23:40:11,122 INFO L858 garLoopResultBuilder]: For program point L1359(lines 1359 1376) no Hoare annotation was computed. [2021-11-12 23:40:11,122 INFO L858 garLoopResultBuilder]: For program point L1343(line 1343) no Hoare annotation was computed. [2021-11-12 23:40:11,123 INFO L858 garLoopResultBuilder]: For program point L1343-2(line 1343) no Hoare annotation was computed. [2021-11-12 23:40:11,123 INFO L858 garLoopResultBuilder]: For program point L1410(lines 1410 1411) no Hoare annotation was computed. [2021-11-12 23:40:11,123 INFO L858 garLoopResultBuilder]: For program point L1427(lines 1427 1436) no Hoare annotation was computed. [2021-11-12 23:40:11,123 INFO L858 garLoopResultBuilder]: For program point L1427-2(lines 1422 1440) no Hoare annotation was computed. [2021-11-12 23:40:11,123 INFO L861 garLoopResultBuilder]: At program point L1510(lines 1497 1511) the Hoare annotation is: true [2021-11-12 23:40:11,123 INFO L858 garLoopResultBuilder]: For program point L1362(lines 1362 1375) no Hoare annotation was computed. [2021-11-12 23:40:11,123 INFO L861 garLoopResultBuilder]: At program point L1478(lines 1462 1479) the Hoare annotation is: true [2021-11-12 23:40:11,123 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 23:40:11,123 INFO L861 garLoopResultBuilder]: At program point L1495(lines 1480 1496) the Hoare annotation is: true [2021-11-12 23:40:11,124 INFO L858 garLoopResultBuilder]: For program point L1611-2(lines 1611 1612) no Hoare annotation was computed. [2021-11-12 23:40:11,124 INFO L854 garLoopResultBuilder]: At program point L1611-3(lines 1611 1612) the Hoare annotation is: (and (bvsge |ULTIMATE.start_main_~argc~0#1| (_ bv1 32)) (not (= |#t~string45.base| |#t~string44.base|)) (= (_ bv0 64) |#t~string45.offset|) (bvsle |ULTIMATE.start_main_~argc~0#1| (_ bv10000 32)) (bvslt |ULTIMATE.start_main_~i~4#1| |ULTIMATE.start_main_~argc~0#1|) (not (= (_ bv0 64) |#t~string45.base|)) (= (_ bv0 64) |#t~string44.offset|)) [2021-11-12 23:40:11,124 INFO L858 garLoopResultBuilder]: For program point L1446(lines 1446 1453) no Hoare annotation was computed. [2021-11-12 23:40:11,124 INFO L858 garLoopResultBuilder]: For program point L1446-1(lines 1446 1453) no Hoare annotation was computed. [2021-11-12 23:40:11,124 INFO L861 garLoopResultBuilder]: At program point L1347(lines 1338 1350) the Hoare annotation is: true [2021-11-12 23:40:11,124 INFO L858 garLoopResultBuilder]: For program point L1364(lines 1364 1374) no Hoare annotation was computed. [2021-11-12 23:40:11,124 INFO L858 garLoopResultBuilder]: For program point L1447-1(lines 1447 1453) no Hoare annotation was computed. [2021-11-12 23:40:11,124 INFO L858 garLoopResultBuilder]: For program point L1447-3(lines 1447 1453) no Hoare annotation was computed. [2021-11-12 23:40:11,124 INFO L861 garLoopResultBuilder]: At program point L1447-4(lines 1447 1453) the Hoare annotation is: true [2021-11-12 23:40:11,125 INFO L858 garLoopResultBuilder]: For program point L1596-2(lines 1596 1597) no Hoare annotation was computed. [2021-11-12 23:40:11,125 INFO L854 garLoopResultBuilder]: At program point L1596-3(lines 1596 1597) the Hoare annotation is: (and (not (= |#t~string45.base| |#t~string44.base|)) (= (_ bv0 64) |#t~string45.offset|) (not (= (_ bv0 64) |#t~string45.base|)) (= (_ bv0 64) |#t~string44.offset|)) [2021-11-12 23:40:11,125 INFO L858 garLoopResultBuilder]: For program point L1596-4(lines 1596 1597) no Hoare annotation was computed. [2021-11-12 23:40:11,125 INFO L858 garLoopResultBuilder]: For program point L1431(lines 1431 1434) no Hoare annotation was computed. [2021-11-12 23:40:11,125 INFO L858 garLoopResultBuilder]: For program point L1431-2(lines 1430 1436) no Hoare annotation was computed. [2021-11-12 23:40:11,125 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-12 23:40:11,125 INFO L858 garLoopResultBuilder]: For program point L1432(line 1432) no Hoare annotation was computed. [2021-11-12 23:40:11,125 INFO L858 garLoopResultBuilder]: For program point L1432-2(line 1432) no Hoare annotation was computed. [2021-11-12 23:40:11,125 INFO L858 garLoopResultBuilder]: For program point L1482(lines 1482 1494) no Hoare annotation was computed. [2021-11-12 23:40:11,126 INFO L858 garLoopResultBuilder]: For program point L1482-1(lines 1482 1494) no Hoare annotation was computed. [2021-11-12 23:40:11,126 INFO L858 garLoopResultBuilder]: For program point L1449(lines 1449 1450) no Hoare annotation was computed. [2021-11-12 23:40:11,126 INFO L858 garLoopResultBuilder]: For program point L1400(lines 1400 1413) no Hoare annotation was computed. [2021-11-12 23:40:11,126 INFO L858 garLoopResultBuilder]: For program point L1466-2(lines 1466 1477) no Hoare annotation was computed. [2021-11-12 23:40:11,126 INFO L858 garLoopResultBuilder]: For program point L1367(lines 1367 1373) no Hoare annotation was computed. [2021-11-12 23:40:11,126 INFO L858 garLoopResultBuilder]: For program point L1400-1(lines 1400 1413) no Hoare annotation was computed. [2021-11-12 23:40:11,126 INFO L861 garLoopResultBuilder]: At program point L1466-3(lines 1466 1477) the Hoare annotation is: true [2021-11-12 23:40:11,126 INFO L858 garLoopResultBuilder]: For program point L1334(lines 1334 1392) no Hoare annotation was computed. [2021-11-12 23:40:11,126 INFO L858 garLoopResultBuilder]: For program point L1466-4(lines 1466 1477) no Hoare annotation was computed. [2021-11-12 23:40:11,127 INFO L858 garLoopResultBuilder]: For program point L1334-1(lines 1325 1420) no Hoare annotation was computed. [2021-11-12 23:40:11,127 INFO L858 garLoopResultBuilder]: For program point L1615-2(lines 1615 1616) no Hoare annotation was computed. [2021-11-12 23:40:11,127 INFO L861 garLoopResultBuilder]: At program point L1615-3(lines 1615 1616) the Hoare annotation is: true [2021-11-12 23:40:11,127 INFO L858 garLoopResultBuilder]: For program point L1615-4(lines 1615 1616) no Hoare annotation was computed. [2021-11-12 23:40:11,127 INFO L858 garLoopResultBuilder]: For program point L1351-1(lines 1351 1385) no Hoare annotation was computed. [2021-11-12 23:40:11,134 INFO L858 garLoopResultBuilder]: For program point L1484(lines 1484 1493) no Hoare annotation was computed. [2021-11-12 23:40:11,134 INFO L858 garLoopResultBuilder]: For program point L1501-1(lines 1501 1509) no Hoare annotation was computed. [2021-11-12 23:40:11,134 INFO L858 garLoopResultBuilder]: For program point L1435-1(line 1435) no Hoare annotation was computed. [2021-11-12 23:40:11,134 INFO L861 garLoopResultBuilder]: At program point L1501-3(lines 1501 1509) the Hoare annotation is: true [2021-11-12 23:40:11,135 INFO L858 garLoopResultBuilder]: For program point L1369(lines 1369 1372) no Hoare annotation was computed. [2021-11-12 23:40:11,135 INFO L858 garLoopResultBuilder]: For program point L1501-4(lines 1501 1509) no Hoare annotation was computed. [2021-11-12 23:40:11,135 INFO L861 garLoopResultBuilder]: At program point L1419(lines 1324 1420) the Hoare annotation is: true [2021-11-12 23:40:11,135 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-12 23:40:11,135 INFO L858 garLoopResultBuilder]: For program point L1469(lines 1469 1474) no Hoare annotation was computed. [2021-11-12 23:40:11,135 INFO L858 garLoopResultBuilder]: For program point L1403(lines 1403 1412) no Hoare annotation was computed. [2021-11-12 23:40:11,136 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1371) no Hoare annotation was computed. [2021-11-12 23:40:11,136 INFO L858 garLoopResultBuilder]: For program point L1387(lines 1387 1391) no Hoare annotation was computed. [2021-11-12 23:40:11,140 INFO L854 garLoopResultBuilder]: At program point L1602(line 1602) the Hoare annotation is: (and (not (= |#t~string45.base| |#t~string44.base|)) (= (_ bv0 64) |#t~string45.offset|) (not (= (_ bv0 64) |#t~string45.base|)) (= (_ bv0 64) |#t~string44.offset|)) [2021-11-12 23:40:11,141 INFO L858 garLoopResultBuilder]: For program point L1602-1(line 1602) no Hoare annotation was computed. [2021-11-12 23:40:11,142 INFO L858 garLoopResultBuilder]: For program point L1371(line 1371) no Hoare annotation was computed. [2021-11-12 23:40:11,142 INFO L858 garLoopResultBuilder]: For program point L1338(lines 1338 1350) no Hoare annotation was computed. [2021-11-12 23:40:11,142 INFO L858 garLoopResultBuilder]: For program point L1338-2(lines 1335 1392) no Hoare annotation was computed. [2021-11-12 23:40:11,142 INFO L858 garLoopResultBuilder]: For program point L1504(lines 1504 1507) no Hoare annotation was computed. [2021-11-12 23:40:11,142 INFO L858 garLoopResultBuilder]: For program point L1471(lines 1471 1472) no Hoare annotation was computed. [2021-11-12 23:40:11,142 INFO L861 garLoopResultBuilder]: At program point L1620(lines 1592 1621) the Hoare annotation is: true [2021-11-12 23:40:11,145 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2021-11-12 23:40:11,147 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:40:11,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:40:11 BoogieIcfgContainer [2021-11-12 23:40:11,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:40:11,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:40:11,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:40:11,171 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:40:11,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:39:58" (3/4) ... [2021-11-12 23:40:11,174 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 23:40:11,180 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-12 23:40:11,202 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2021-11-12 23:40:11,203 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-12 23:40:11,203 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-12 23:40:11,204 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-12 23:40:11,205 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 23:40:11,206 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 23:40:11,285 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 23:40:11,285 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:40:11,286 INFO L158 Benchmark]: Toolchain (without parser) took 15441.80ms. Allocated memory was 56.6MB in the beginning and 119.5MB in the end (delta: 62.9MB). Free memory was 31.8MB in the beginning and 80.9MB in the end (delta: -49.1MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-11-12 23:40:11,286 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 37.9MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:40:11,286 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1484.57ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 31.7MB in the beginning and 37.1MB in the end (delta: -5.4MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2021-11-12 23:40:11,287 INFO L158 Benchmark]: Boogie Procedure Inliner took 141.81ms. Allocated memory is still 71.3MB. Free memory was 37.1MB in the beginning and 32.7MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 23:40:11,287 INFO L158 Benchmark]: Boogie Preprocessor took 108.06ms. Allocated memory is still 71.3MB. Free memory was 32.7MB in the beginning and 43.4MB in the end (delta: -10.7MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-11-12 23:40:11,288 INFO L158 Benchmark]: RCFGBuilder took 1285.01ms. Allocated memory was 71.3MB in the beginning and 94.4MB in the end (delta: 23.1MB). Free memory was 43.4MB in the beginning and 45.0MB in the end (delta: -1.6MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2021-11-12 23:40:11,288 INFO L158 Benchmark]: TraceAbstraction took 12296.72ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 44.6MB in the beginning and 89.3MB in the end (delta: -44.7MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2021-11-12 23:40:11,288 INFO L158 Benchmark]: Witness Printer took 114.96ms. Allocated memory is still 119.5MB. Free memory was 89.3MB in the beginning and 80.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:40:11,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 37.9MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1484.57ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 31.7MB in the beginning and 37.1MB in the end (delta: -5.4MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 141.81ms. Allocated memory is still 71.3MB. Free memory was 37.1MB in the beginning and 32.7MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 108.06ms. Allocated memory is still 71.3MB. Free memory was 32.7MB in the beginning and 43.4MB in the end (delta: -10.7MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * RCFGBuilder took 1285.01ms. Allocated memory was 71.3MB in the beginning and 94.4MB in the end (delta: 23.1MB). Free memory was 43.4MB in the beginning and 45.0MB in the end (delta: -1.6MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * TraceAbstraction took 12296.72ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 44.6MB in the beginning and 89.3MB in the end (delta: -44.7MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. * Witness Printer took 114.96ms. Allocated memory is still 119.5MB. Free memory was 89.3MB in the beginning and 80.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 2 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.2s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77 SdHoareTripleChecker+Valid, 395.44ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 564 SdHoareTripleChecker+Invalid, 329.40ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 278 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 77 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 286 mSDtfsCounter, 77 mSolverCounterSat, 13.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 826 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 24 PreInvPairs, 50 NumberOfFragments, 90 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 19 FomulaSimplificationsInter, 267 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 425 NumberOfCodeBlocks, 406 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 822 ConstructedInterpolants, 0 QuantifiedInterpolants, 1798 SizeOfPredicates, 20 NumberOfNonLiveVariables, 2326 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 28 InterpolantComputations, 12 PerfectInterpolantSequences, 142/206 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: (((((~bvsge64(argc, 1bv32) && !("--" == "--")) && 0bv64 == "--") && ~bvsle32(argc, 10000bv32)) && ~bvslt64(i, argc)) && !(0bv64 == "--")) && 0bv64 == "--" - 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: ((!("--" == "--") && 0bv64 == "--") && !(0bv64 == "--")) && 0bv64 == "--" - InvariantResult [Line: 1586]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1592]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1606]: Loop Invariant Derived loop invariant: ((((~bvsge64(argc, 1bv32) && !("--" == "--")) && 0bv64 == "--") && ~bvsle32(argc, 10000bv32)) && !(0bv64 == "--")) && 0bv64 == "--" - 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! [2021-11-12 23:40:11,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef907204-ca25-440f-9ef8-f0559823a8b7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE