./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i -s /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9fb52f5a8769e751d5dc39d93dc642433ae2f5b ........................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i -s /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9fb52f5a8769e751d5dc39d93dc642433ae2f5b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 12:35:53,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:35:53,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:35:53,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:35:53,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:35:53,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:35:53,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:35:53,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:35:53,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:35:53,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:35:53,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:35:53,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:35:53,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:35:53,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:35:53,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:35:53,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:35:53,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:35:53,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:35:53,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:35:53,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:35:53,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:35:53,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:35:53,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:35:53,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:35:53,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:35:53,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:35:53,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:35:53,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:35:53,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:35:53,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:35:53,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:35:53,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:35:53,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:35:53,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:35:53,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:35:53,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:35:53,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:35:53,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:35:53,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:35:53,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:35:53,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:35:53,600 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 12:35:53,610 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:35:53,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:35:53,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 12:35:53,611 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 12:35:53,611 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 12:35:53,611 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 12:35:53,611 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 12:35:53,611 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 12:35:53,611 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 12:35:53,611 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 12:35:53,612 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 12:35:53,612 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 12:35:53,612 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 12:35:53,612 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 12:35:53,612 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 12:35:53,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:35:53,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:35:53,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:35:53,613 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:35:53,613 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 12:35:53,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:35:53,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:35:53,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:35:53,614 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 12:35:53,614 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 12:35:53,614 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 12:35:53,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:35:53,614 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 12:35:53,614 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:35:53,614 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:35:53,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:35:53,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:35:53,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:35:53,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:35:53,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:35:53,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:35:53,615 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 12:35:53,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:35:53,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:35:53,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 12:35:53,615 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9fb52f5a8769e751d5dc39d93dc642433ae2f5b [2019-12-07 12:35:53,712 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:35:53,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:35:53,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:35:53,724 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:35:53,725 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:35:53,725 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i [2019-12-07 12:35:53,769 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/data/aa15dcbab/64b2a1b7707442bd9c983d182efabdb0/FLAG0dae8e897 [2019-12-07 12:35:54,305 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:35:54,305 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i [2019-12-07 12:35:54,315 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/data/aa15dcbab/64b2a1b7707442bd9c983d182efabdb0/FLAG0dae8e897 [2019-12-07 12:35:54,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/data/aa15dcbab/64b2a1b7707442bd9c983d182efabdb0 [2019-12-07 12:35:54,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:35:54,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:35:54,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:35:54,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:35:54,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:35:54,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:35:54" (1/1) ... [2019-12-07 12:35:54,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320cb2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:54, skipping insertion in model container [2019-12-07 12:35:54,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:35:54" (1/1) ... [2019-12-07 12:35:54,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:35:54,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:35:55,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:35:55,073 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) [2019-12-07 12:35:55,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12e20ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:55, skipping insertion in model container [2019-12-07 12:35:55,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:35:55,074 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2019-12-07 12:35:55,076 INFO L168 Benchmark]: Toolchain (without parser) took 323.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 12:35:55,076 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:35:55,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 12:35:55,078 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 321.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 12:35:56,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:35:56,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:35:56,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:35:56,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:35:56,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:35:56,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:35:56,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:35:56,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:35:56,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:35:56,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:35:56,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:35:56,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:35:56,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:35:56,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:35:56,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:35:56,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:35:56,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:35:56,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:35:56,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:35:56,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:35:56,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:35:56,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:35:56,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:35:56,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:35:56,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:35:56,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:35:56,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:35:56,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:35:56,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:35:56,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:35:56,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:35:56,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:35:56,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:35:56,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:35:56,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:35:56,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:35:56,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:35:56,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:35:56,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:35:56,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:35:56,225 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-12-07 12:35:56,236 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:35:56,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:35:56,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 12:35:56,237 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 12:35:56,237 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 12:35:56,237 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 12:35:56,237 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 12:35:56,237 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 12:35:56,237 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 12:35:56,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:35:56,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:35:56,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:35:56,238 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:35:56,239 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 12:35:56,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:35:56,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:35:56,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:35:56,239 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 12:35:56,239 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 12:35:56,239 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 12:35:56,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:35:56,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 12:35:56,240 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 12:35:56,240 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 12:35:56,240 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:35:56,240 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:35:56,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:35:56,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:35:56,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:35:56,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:35:56,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:35:56,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:35:56,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:35:56,241 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 12:35:56,241 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 12:35:56,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:35:56,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 12:35:56,242 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9fb52f5a8769e751d5dc39d93dc642433ae2f5b [2019-12-07 12:35:56,411 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:35:56,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:35:56,421 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:35:56,422 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:35:56,422 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:35:56,423 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i [2019-12-07 12:35:56,461 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/data/448c59a78/35108e9588a04367aaedfa20b3490a6c/FLAG3ba4f365c [2019-12-07 12:35:56,938 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:35:56,938 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i [2019-12-07 12:35:56,948 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/data/448c59a78/35108e9588a04367aaedfa20b3490a6c/FLAG3ba4f365c [2019-12-07 12:35:57,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/data/448c59a78/35108e9588a04367aaedfa20b3490a6c [2019-12-07 12:35:57,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:35:57,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:35:57,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:35:57,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:35:57,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:35:57,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:35:57" (1/1) ... [2019-12-07 12:35:57,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f9c3856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:57, skipping insertion in model container [2019-12-07 12:35:57,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:35:57" (1/1) ... [2019-12-07 12:35:57,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:35:57,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:35:57,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:35:57,743 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-12-07 12:35:57,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:35:57,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:35:57,789 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:35:57,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:35:57,875 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:35:57,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:57 WrapperNode [2019-12-07 12:35:57,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:35:57,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:35:57,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:35:57,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:35:57,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:57" (1/1) ... [2019-12-07 12:35:57,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:57" (1/1) ... [2019-12-07 12:35:57,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:35:57,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:35:57,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:35:57,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:35:57,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:57" (1/1) ... [2019-12-07 12:35:57,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:57" (1/1) ... [2019-12-07 12:35:57,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:57" (1/1) ... [2019-12-07 12:35:57,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:57" (1/1) ... [2019-12-07 12:35:57,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:57" (1/1) ... [2019-12-07 12:35:57,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:57" (1/1) ... [2019-12-07 12:35:57,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:57" (1/1) ... [2019-12-07 12:35:57,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:35:57,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:35:57,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:35:57,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:35:57,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:35:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 12:35:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 12:35:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 12:35:57,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 12:35:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 12:35:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 12:35:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 12:35:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-12-07 12:35:57,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:35:57,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:35:58,333 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:35:58,333 INFO L287 CfgBuilder]: Removed 42 assume(true) statements. [2019-12-07 12:35:58,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:35:58 BoogieIcfgContainer [2019-12-07 12:35:58,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:35:58,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:35:58,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:35:58,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:35:58,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:35:57" (1/3) ... [2019-12-07 12:35:58,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac81960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:35:58, skipping insertion in model container [2019-12-07 12:35:58,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:57" (2/3) ... [2019-12-07 12:35:58,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac81960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:35:58, skipping insertion in model container [2019-12-07 12:35:58,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:35:58" (3/3) ... [2019-12-07 12:35:58,341 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test22_4.i [2019-12-07 12:35:58,349 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:35:58,355 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2019-12-07 12:35:58,363 INFO L249 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2019-12-07 12:35:58,376 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:35:58,376 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 12:35:58,376 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:35:58,376 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:35:58,376 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:35:58,376 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:35:58,377 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:35:58,377 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:35:58,388 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2019-12-07 12:35:58,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 12:35:58,392 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:35:58,393 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 12:35:58,393 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:35:58,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:35:58,397 INFO L82 PathProgramCache]: Analyzing trace with hash 889508776, now seen corresponding path program 1 times [2019-12-07 12:35:58,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:35:58,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926606666] [2019-12-07 12:35:58,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 12:35:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:35:58,462 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:35:58,467 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:35:58,510 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 12:35:58,510 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:35:58,517 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:35:58,518 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:35:58,518 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-12-07 12:35:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:35:58,537 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:35:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:35:58,543 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926606666] [2019-12-07 12:35:58,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:35:58,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 12:35:58,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832599025] [2019-12-07 12:35:58,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:35:58,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:35:58,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:35:58,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:35:58,562 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 5 states. [2019-12-07 12:35:58,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:35:58,985 INFO L93 Difference]: Finished difference Result 216 states and 234 transitions. [2019-12-07 12:35:58,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 12:35:58,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-12-07 12:35:58,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:35:58,996 INFO L225 Difference]: With dead ends: 216 [2019-12-07 12:35:58,996 INFO L226 Difference]: Without dead ends: 208 [2019-12-07 12:35:58,998 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:35:59,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2019-12-07 12:35:59,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 74. [2019-12-07 12:35:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-12-07 12:35:59,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2019-12-07 12:35:59,033 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 6 [2019-12-07 12:35:59,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:35:59,033 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2019-12-07 12:35:59,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:35:59,034 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2019-12-07 12:35:59,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 12:35:59,034 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:35:59,034 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 12:35:59,235 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 12:35:59,236 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:35:59,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:35:59,237 INFO L82 PathProgramCache]: Analyzing trace with hash 889568358, now seen corresponding path program 1 times [2019-12-07 12:35:59,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:35:59,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573477490] [2019-12-07 12:35:59,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 12:35:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:35:59,339 INFO L264 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:35:59,340 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:35:59,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:35:59,356 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:35:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:35:59,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573477490] [2019-12-07 12:35:59,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:35:59,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 12:35:59,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120369190] [2019-12-07 12:35:59,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:35:59,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:35:59,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:35:59,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:35:59,360 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 4 states. [2019-12-07 12:35:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:35:59,386 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2019-12-07 12:35:59,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:35:59,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-12-07 12:35:59,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:35:59,388 INFO L225 Difference]: With dead ends: 166 [2019-12-07 12:35:59,388 INFO L226 Difference]: Without dead ends: 166 [2019-12-07 12:35:59,389 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:35:59,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-12-07 12:35:59,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 72. [2019-12-07 12:35:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-12-07 12:35:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2019-12-07 12:35:59,395 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 6 [2019-12-07 12:35:59,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:35:59,395 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2019-12-07 12:35:59,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:35:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2019-12-07 12:35:59,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 12:35:59,396 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:35:59,396 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:35:59,597 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 12:35:59,599 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:35:59,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:35:59,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1804968328, now seen corresponding path program 1 times [2019-12-07 12:35:59,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:35:59,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445052937] [2019-12-07 12:35:59,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 12:35:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:35:59,678 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 12:35:59,679 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:35:59,690 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 12:35:59,690 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:35:59,695 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:35:59,695 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:35:59,695 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-12-07 12:35:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:35:59,728 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:35:59,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:35:59,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445052937] [2019-12-07 12:35:59,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:35:59,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-12-07 12:35:59,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706907683] [2019-12-07 12:35:59,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 12:35:59,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:35:59,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 12:35:59,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-12-07 12:35:59,924 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 10 states. [2019-12-07 12:36:00,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:00,386 INFO L93 Difference]: Finished difference Result 165 states and 179 transitions. [2019-12-07 12:36:00,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 12:36:00,387 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2019-12-07 12:36:00,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:00,388 INFO L225 Difference]: With dead ends: 165 [2019-12-07 12:36:00,388 INFO L226 Difference]: Without dead ends: 165 [2019-12-07 12:36:00,389 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-12-07 12:36:00,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-12-07 12:36:00,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 71. [2019-12-07 12:36:00,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-12-07 12:36:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2019-12-07 12:36:00,394 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 7 [2019-12-07 12:36:00,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:00,394 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2019-12-07 12:36:00,394 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 12:36:00,394 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2019-12-07 12:36:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 12:36:00,395 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:00,395 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:00,595 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 12:36:00,597 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:00,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:00,598 INFO L82 PathProgramCache]: Analyzing trace with hash 119421555, now seen corresponding path program 1 times [2019-12-07 12:36:00,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:00,600 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808772129] [2019-12-07 12:36:00,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:00,697 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:36:00,698 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:00,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:00,706 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:00,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808772129] [2019-12-07 12:36:00,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:36:00,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 12:36:00,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749613720] [2019-12-07 12:36:00,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:36:00,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:00,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:36:00,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:36:00,709 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 4 states. [2019-12-07 12:36:00,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:00,726 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2019-12-07 12:36:00,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:36:00,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 12:36:00,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:00,727 INFO L225 Difference]: With dead ends: 118 [2019-12-07 12:36:00,727 INFO L226 Difference]: Without dead ends: 118 [2019-12-07 12:36:00,727 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:36:00,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-12-07 12:36:00,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 71. [2019-12-07 12:36:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-12-07 12:36:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2019-12-07 12:36:00,733 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 8 [2019-12-07 12:36:00,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:00,733 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2019-12-07 12:36:00,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:36:00,733 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2019-12-07 12:36:00,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 12:36:00,734 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:00,734 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:00,934 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 12:36:00,936 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:00,937 INFO L82 PathProgramCache]: Analyzing trace with hash 176679857, now seen corresponding path program 1 times [2019-12-07 12:36:00,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:00,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894479866] [2019-12-07 12:36:00,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:01,029 INFO L264 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 12:36:01,030 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:01,068 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:01,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894479866] [2019-12-07 12:36:01,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:36:01,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 12:36:01,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447055858] [2019-12-07 12:36:01,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:36:01,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:01,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:36:01,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:36:01,073 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand 4 states. [2019-12-07 12:36:01,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:01,102 INFO L93 Difference]: Finished difference Result 145 states and 156 transitions. [2019-12-07 12:36:01,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:36:01,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 12:36:01,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:01,103 INFO L225 Difference]: With dead ends: 145 [2019-12-07 12:36:01,103 INFO L226 Difference]: Without dead ends: 145 [2019-12-07 12:36:01,103 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:36:01,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-12-07 12:36:01,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 73. [2019-12-07 12:36:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-12-07 12:36:01,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2019-12-07 12:36:01,107 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 8 [2019-12-07 12:36:01,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:01,108 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2019-12-07 12:36:01,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:36:01,108 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2019-12-07 12:36:01,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 12:36:01,108 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:01,108 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:01,309 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 12:36:01,311 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:01,312 INFO L82 PathProgramCache]: Analyzing trace with hash 820865718, now seen corresponding path program 1 times [2019-12-07 12:36:01,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:01,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426270025] [2019-12-07 12:36:01,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:01,396 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 12:36:01,396 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:01,407 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:01,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426270025] [2019-12-07 12:36:01,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:36:01,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 12:36:01,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800815783] [2019-12-07 12:36:01,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 12:36:01,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:01,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:36:01,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:36:01,420 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand 6 states. [2019-12-07 12:36:01,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:01,445 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2019-12-07 12:36:01,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:36:01,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-12-07 12:36:01,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:01,447 INFO L225 Difference]: With dead ends: 111 [2019-12-07 12:36:01,447 INFO L226 Difference]: Without dead ends: 111 [2019-12-07 12:36:01,447 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:36:01,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-12-07 12:36:01,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 75. [2019-12-07 12:36:01,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-12-07 12:36:01,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2019-12-07 12:36:01,450 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 12 [2019-12-07 12:36:01,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:01,451 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2019-12-07 12:36:01,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 12:36:01,451 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2019-12-07 12:36:01,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 12:36:01,451 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:01,451 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:01,651 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 12:36:01,652 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:01,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:01,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2137107767, now seen corresponding path program 1 times [2019-12-07 12:36:01,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:01,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659553349] [2019-12-07 12:36:01,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:01,698 INFO L264 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:36:01,699 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:01,703 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:01,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659553349] [2019-12-07 12:36:01,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:36:01,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 12:36:01,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13905986] [2019-12-07 12:36:01,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:36:01,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:01,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:36:01,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:36:01,706 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand 3 states. [2019-12-07 12:36:01,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:01,781 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2019-12-07 12:36:01,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:36:01,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-12-07 12:36:01,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:01,782 INFO L225 Difference]: With dead ends: 102 [2019-12-07 12:36:01,782 INFO L226 Difference]: Without dead ends: 99 [2019-12-07 12:36:01,782 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:36:01,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-12-07 12:36:01,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 85. [2019-12-07 12:36:01,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-12-07 12:36:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2019-12-07 12:36:01,785 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 12 [2019-12-07 12:36:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:01,786 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2019-12-07 12:36:01,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:36:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2019-12-07 12:36:01,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 12:36:01,786 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:01,786 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:01,987 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 12:36:01,988 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:01,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:01,989 INFO L82 PathProgramCache]: Analyzing trace with hash 2137106293, now seen corresponding path program 1 times [2019-12-07 12:36:01,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:01,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868383771] [2019-12-07 12:36:01,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:02,089 INFO L264 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 12:36:02,090 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:02,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:02,108 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:02,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868383771] [2019-12-07 12:36:02,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:36:02,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 12:36:02,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128413028] [2019-12-07 12:36:02,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:36:02,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:02,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:36:02,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:36:02,112 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2019-12-07 12:36:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:02,145 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2019-12-07 12:36:02,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 12:36:02,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-12-07 12:36:02,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:02,146 INFO L225 Difference]: With dead ends: 81 [2019-12-07 12:36:02,146 INFO L226 Difference]: Without dead ends: 73 [2019-12-07 12:36:02,147 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:36:02,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-12-07 12:36:02,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2019-12-07 12:36:02,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-12-07 12:36:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2019-12-07 12:36:02,149 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 12 [2019-12-07 12:36:02,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:02,149 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2019-12-07 12:36:02,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:36:02,149 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2019-12-07 12:36:02,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 12:36:02,150 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:02,150 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:02,350 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 12:36:02,352 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:02,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:02,352 INFO L82 PathProgramCache]: Analyzing trace with hash 976647734, now seen corresponding path program 1 times [2019-12-07 12:36:02,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:02,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635948010] [2019-12-07 12:36:02,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:02,420 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:02,421 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:02,444 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:02,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635948010] [2019-12-07 12:36:02,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [387086513] [2019-12-07 12:36:02,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:02,590 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:02,590 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:02,593 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:02,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513607786] [2019-12-07 12:36:02,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:02,653 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 12:36:02,654 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:02,657 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 12:36:02,657 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:36:02,659 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:36:02,659 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:36:02,659 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-12-07 12:36:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:02,715 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:02,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2019-12-07 12:36:02,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6, 6, 6, 6] total 15 [2019-12-07 12:36:02,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177986555] [2019-12-07 12:36:02,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 12:36:02,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:02,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 12:36:02,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-12-07 12:36:02,722 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 7 states. [2019-12-07 12:36:03,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:03,100 INFO L93 Difference]: Finished difference Result 154 states and 163 transitions. [2019-12-07 12:36:03,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 12:36:03,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-12-07 12:36:03,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:03,101 INFO L225 Difference]: With dead ends: 154 [2019-12-07 12:36:03,101 INFO L226 Difference]: Without dead ends: 154 [2019-12-07 12:36:03,102 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2019-12-07 12:36:03,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-12-07 12:36:03,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 70. [2019-12-07 12:36:03,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-12-07 12:36:03,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2019-12-07 12:36:03,105 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 14 [2019-12-07 12:36:03,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:03,105 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2019-12-07 12:36:03,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 12:36:03,105 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2019-12-07 12:36:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 12:36:03,105 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:03,106 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:03,707 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:03,709 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:03,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:03,710 INFO L82 PathProgramCache]: Analyzing trace with hash 976647735, now seen corresponding path program 1 times [2019-12-07 12:36:03,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:03,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056848087] [2019-12-07 12:36:03,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:03,820 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:03,821 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:03,855 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:03,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056848087] [2019-12-07 12:36:03,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [235566424] [2019-12-07 12:36:03,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:04,015 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:04,016 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:04,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:04,019 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:04,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:04,021 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978069556] [2019-12-07 12:36:04,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:04,061 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-07 12:36:04,062 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:04,074 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 12:36:04,074 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:36:04,078 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:36:04,078 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:36:04,078 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-12-07 12:36:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:04,166 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:04,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:04,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2019-12-07 12:36:04,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 6, 6, 6] total 22 [2019-12-07 12:36:04,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661912425] [2019-12-07 12:36:04,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 12:36:04,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:04,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 12:36:04,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-12-07 12:36:04,571 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 14 states. [2019-12-07 12:36:05,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:05,212 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2019-12-07 12:36:05,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 12:36:05,213 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2019-12-07 12:36:05,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:05,214 INFO L225 Difference]: With dead ends: 165 [2019-12-07 12:36:05,214 INFO L226 Difference]: Without dead ends: 165 [2019-12-07 12:36:05,215 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2019-12-07 12:36:05,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-12-07 12:36:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 69. [2019-12-07 12:36:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-12-07 12:36:05,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2019-12-07 12:36:05,217 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 14 [2019-12-07 12:36:05,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:05,217 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2019-12-07 12:36:05,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 12:36:05,217 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2019-12-07 12:36:05,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 12:36:05,218 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:05,218 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:05,819 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3,14 cvc4 --incremental --print-success --lang smt --rewrite-divk,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:05,820 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:05,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:05,821 INFO L82 PathProgramCache]: Analyzing trace with hash -2040718634, now seen corresponding path program 1 times [2019-12-07 12:36:05,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:05,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544734251] [2019-12-07 12:36:05,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:05,870 INFO L264 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:05,871 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:05,896 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:05,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:05,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544734251] [2019-12-07 12:36:05,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2090383536] [2019-12-07 12:36:05,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:06,021 INFO L264 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 12:36:06,022 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:06,053 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:06,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:36:06,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 6] total 13 [2019-12-07 12:36:06,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587665917] [2019-12-07 12:36:06,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:36:06,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:06,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:36:06,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-12-07 12:36:06,056 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 5 states. [2019-12-07 12:36:06,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:06,087 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2019-12-07 12:36:06,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:36:06,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-12-07 12:36:06,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:06,088 INFO L225 Difference]: With dead ends: 69 [2019-12-07 12:36:06,088 INFO L226 Difference]: Without dead ends: 69 [2019-12-07 12:36:06,089 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-12-07 12:36:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-12-07 12:36:06,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2019-12-07 12:36:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-12-07 12:36:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2019-12-07 12:36:06,091 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 16 [2019-12-07 12:36:06,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:06,091 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2019-12-07 12:36:06,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:36:06,091 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2019-12-07 12:36:06,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 12:36:06,091 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:06,092 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:06,493 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3,17 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:06,494 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:06,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:06,495 INFO L82 PathProgramCache]: Analyzing trace with hash -2039365097, now seen corresponding path program 1 times [2019-12-07 12:36:06,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:06,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55788077] [2019-12-07 12:36:06,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:06,555 INFO L264 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:06,555 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:06,579 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:06,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55788077] [2019-12-07 12:36:06,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1612744494] [2019-12-07 12:36:06,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:06,740 INFO L264 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:06,741 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:06,742 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:06,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:06,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666167589] [2019-12-07 12:36:06,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:06,786 INFO L264 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 12:36:06,787 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:06,790 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 12:36:06,790 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:36:06,791 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:36:06,791 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:36:06,791 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-12-07 12:36:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:06,846 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:06,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2019-12-07 12:36:06,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6, 6, 6, 6] total 15 [2019-12-07 12:36:06,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603840384] [2019-12-07 12:36:06,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 12:36:06,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:06,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 12:36:06,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-12-07 12:36:06,849 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand 7 states. [2019-12-07 12:36:07,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:07,134 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2019-12-07 12:36:07,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 12:36:07,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2019-12-07 12:36:07,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:07,135 INFO L225 Difference]: With dead ends: 111 [2019-12-07 12:36:07,136 INFO L226 Difference]: Without dead ends: 111 [2019-12-07 12:36:07,136 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2019-12-07 12:36:07,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-12-07 12:36:07,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 67. [2019-12-07 12:36:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-12-07 12:36:07,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2019-12-07 12:36:07,137 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 16 [2019-12-07 12:36:07,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:07,138 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2019-12-07 12:36:07,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 12:36:07,138 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2019-12-07 12:36:07,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 12:36:07,138 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:07,138 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:07,739 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:07,740 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:07,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:07,741 INFO L82 PathProgramCache]: Analyzing trace with hash -2039365096, now seen corresponding path program 1 times [2019-12-07 12:36:07,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:07,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162422477] [2019-12-07 12:36:07,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:07,892 INFO L264 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:07,893 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:07,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:07,914 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:07,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162422477] [2019-12-07 12:36:07,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1529889360] [2019-12-07 12:36:07,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:08,070 INFO L264 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:08,071 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:08,074 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:08,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:08,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726748769] [2019-12-07 12:36:08,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:08,122 INFO L264 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-07 12:36:08,123 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:08,136 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 12:36:08,136 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:36:08,140 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:36:08,140 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:36:08,141 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-12-07 12:36:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:08,236 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:08,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2019-12-07 12:36:08,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 6, 6, 6] total 22 [2019-12-07 12:36:08,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128239577] [2019-12-07 12:36:08,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 12:36:08,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:08,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 12:36:08,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-12-07 12:36:08,652 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 14 states. [2019-12-07 12:36:09,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:09,155 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2019-12-07 12:36:09,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 12:36:09,155 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2019-12-07 12:36:09,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:09,156 INFO L225 Difference]: With dead ends: 113 [2019-12-07 12:36:09,156 INFO L226 Difference]: Without dead ends: 113 [2019-12-07 12:36:09,156 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2019-12-07 12:36:09,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-12-07 12:36:09,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 65. [2019-12-07 12:36:09,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-12-07 12:36:09,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2019-12-07 12:36:09,158 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 16 [2019-12-07 12:36:09,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:09,158 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2019-12-07 12:36:09,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 12:36:09,158 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2019-12-07 12:36:09,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 12:36:09,159 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:09,159 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:09,760 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3,22 cvc4 --incremental --print-success --lang smt --rewrite-divk,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:09,761 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:09,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:09,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1202804242, now seen corresponding path program 1 times [2019-12-07 12:36:09,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:09,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55357761] [2019-12-07 12:36:09,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:09,819 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:09,820 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:09,841 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:09,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55357761] [2019-12-07 12:36:09,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1401090914] [2019-12-07 12:36:09,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 25 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:09,960 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 12:36:09,961 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:09,998 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:09,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:36:10,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6, 6] total 14 [2019-12-07 12:36:10,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866617409] [2019-12-07 12:36:10,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 12:36:10,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:10,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:36:10,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2019-12-07 12:36:10,000 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 6 states. [2019-12-07 12:36:10,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:10,049 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2019-12-07 12:36:10,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 12:36:10,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-12-07 12:36:10,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:10,049 INFO L225 Difference]: With dead ends: 65 [2019-12-07 12:36:10,049 INFO L226 Difference]: Without dead ends: 65 [2019-12-07 12:36:10,050 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2019-12-07 12:36:10,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-12-07 12:36:10,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2019-12-07 12:36:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-12-07 12:36:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2019-12-07 12:36:10,051 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 17 [2019-12-07 12:36:10,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:10,051 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2019-12-07 12:36:10,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 12:36:10,051 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2019-12-07 12:36:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 12:36:10,052 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:10,052 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:10,452 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 cvc4 --incremental --print-success --lang smt --rewrite-divk,24 mathsat -unsat_core_generation=3 [2019-12-07 12:36:10,453 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:10,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:10,454 INFO L82 PathProgramCache]: Analyzing trace with hash 208974459, now seen corresponding path program 1 times [2019-12-07 12:36:10,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:10,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606376847] [2019-12-07 12:36:10,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:10,560 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:10,560 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:10,582 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:10,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606376847] [2019-12-07 12:36:10,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [315770618] [2019-12-07 12:36:10,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 27 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:10,756 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:10,757 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:10,758 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:10,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179699392] [2019-12-07 12:36:10,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:10,808 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 12:36:10,809 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:10,812 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 12:36:10,812 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:36:10,815 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:36:10,815 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:36:10,815 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-12-07 12:36:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:10,867 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:10,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2019-12-07 12:36:10,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6, 6, 6, 6] total 15 [2019-12-07 12:36:10,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513318830] [2019-12-07 12:36:10,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 12:36:10,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:10,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 12:36:10,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-12-07 12:36:10,896 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 7 states. [2019-12-07 12:36:11,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:11,177 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2019-12-07 12:36:11,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 12:36:11,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-12-07 12:36:11,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:11,177 INFO L225 Difference]: With dead ends: 95 [2019-12-07 12:36:11,178 INFO L226 Difference]: Without dead ends: 95 [2019-12-07 12:36:11,178 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2019-12-07 12:36:11,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-12-07 12:36:11,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 63. [2019-12-07 12:36:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-12-07 12:36:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2019-12-07 12:36:11,180 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 21 [2019-12-07 12:36:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:11,180 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2019-12-07 12:36:11,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 12:36:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2019-12-07 12:36:11,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 12:36:11,181 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:11,181 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:11,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 cvc4 --incremental --print-success --lang smt --rewrite-divk,26 mathsat -unsat_core_generation=3 [2019-12-07 12:36:11,783 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:11,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:11,784 INFO L82 PathProgramCache]: Analyzing trace with hash 208974460, now seen corresponding path program 1 times [2019-12-07 12:36:11,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:11,785 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494616479] [2019-12-07 12:36:11,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 29 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:11,943 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:11,944 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:11,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:11,967 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:12,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494616479] [2019-12-07 12:36:12,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2094706052] [2019-12-07 12:36:12,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 30 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:12,153 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:12,154 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:12,156 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:12,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385438831] [2019-12-07 12:36:12,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:12,213 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 29 conjunts are in the unsatisfiable core [2019-12-07 12:36:12,214 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:12,225 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 12:36:12,225 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:36:12,229 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:36:12,230 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:36:12,230 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-12-07 12:36:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:12,320 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:12,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2019-12-07 12:36:12,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 6, 6, 6] total 22 [2019-12-07 12:36:12,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956791012] [2019-12-07 12:36:12,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 12:36:12,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:12,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 12:36:12,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-12-07 12:36:12,758 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 14 states. [2019-12-07 12:36:13,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:13,223 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2019-12-07 12:36:13,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 12:36:13,224 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2019-12-07 12:36:13,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:13,224 INFO L225 Difference]: With dead ends: 97 [2019-12-07 12:36:13,224 INFO L226 Difference]: Without dead ends: 97 [2019-12-07 12:36:13,225 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2019-12-07 12:36:13,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-12-07 12:36:13,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 61. [2019-12-07 12:36:13,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-12-07 12:36:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2019-12-07 12:36:13,226 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 21 [2019-12-07 12:36:13,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:13,226 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2019-12-07 12:36:13,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 12:36:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2019-12-07 12:36:13,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 12:36:13,227 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:13,227 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:13,828 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 cvc4 --incremental --print-success --lang smt --rewrite-divk,29 mathsat -unsat_core_generation=3,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:13,829 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:13,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:13,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1667629311, now seen corresponding path program 1 times [2019-12-07 12:36:13,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:13,831 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878718211] [2019-12-07 12:36:13,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 32 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:13,901 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:13,902 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:13,922 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:13,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878718211] [2019-12-07 12:36:13,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [290945514] [2019-12-07 12:36:13,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 33 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:14,047 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 12:36:14,047 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:14,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:14,083 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:14,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:36:14,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6, 6] total 14 [2019-12-07 12:36:14,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378306514] [2019-12-07 12:36:14,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 12:36:14,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:14,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:36:14,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2019-12-07 12:36:14,086 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 6 states. [2019-12-07 12:36:14,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:14,134 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2019-12-07 12:36:14,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 12:36:14,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-12-07 12:36:14,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:14,134 INFO L225 Difference]: With dead ends: 61 [2019-12-07 12:36:14,134 INFO L226 Difference]: Without dead ends: 61 [2019-12-07 12:36:14,135 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2019-12-07 12:36:14,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-12-07 12:36:14,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-12-07 12:36:14,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-12-07 12:36:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2019-12-07 12:36:14,136 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 25 [2019-12-07 12:36:14,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:14,136 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2019-12-07 12:36:14,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 12:36:14,136 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2019-12-07 12:36:14,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 12:36:14,137 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:14,137 INFO L410 BasicCegarLoop]: trace histogram [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, 1] [2019-12-07 12:36:14,538 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 mathsat -unsat_core_generation=3,33 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:14,539 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:14,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:14,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1821511215, now seen corresponding path program 1 times [2019-12-07 12:36:14,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:14,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538866623] [2019-12-07 12:36:14,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 34 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:14,638 INFO L264 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:14,639 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:14,660 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:14,717 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538866623] [2019-12-07 12:36:14,717 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [448770194] [2019-12-07 12:36:14,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 35 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:14,805 INFO L264 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 12:36:14,806 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:14,854 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:14,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:36:14,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 6] total 15 [2019-12-07 12:36:14,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130291050] [2019-12-07 12:36:14,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 12:36:14,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:14,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 12:36:14,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-12-07 12:36:14,857 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 7 states. [2019-12-07 12:36:14,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:14,928 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2019-12-07 12:36:14,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 12:36:14,928 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2019-12-07 12:36:14,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:14,929 INFO L225 Difference]: With dead ends: 61 [2019-12-07 12:36:14,929 INFO L226 Difference]: Without dead ends: 61 [2019-12-07 12:36:14,929 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2019-12-07 12:36:14,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-12-07 12:36:14,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-12-07 12:36:14,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-12-07 12:36:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2019-12-07 12:36:14,930 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 30 [2019-12-07 12:36:14,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:14,930 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2019-12-07 12:36:14,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 12:36:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2019-12-07 12:36:14,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 12:36:14,931 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:14,931 INFO L410 BasicCegarLoop]: trace histogram [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, 1] [2019-12-07 12:36:15,332 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 cvc4 --incremental --print-success --lang smt --rewrite-divk,34 mathsat -unsat_core_generation=3 [2019-12-07 12:36:15,332 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:15,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1821512689, now seen corresponding path program 1 times [2019-12-07 12:36:15,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:15,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345718356] [2019-12-07 12:36:15,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 36 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:15,454 INFO L264 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:15,455 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:15,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:15,476 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:15,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345718356] [2019-12-07 12:36:15,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [989306236] [2019-12-07 12:36:15,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 37 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:15,666 INFO L264 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:15,666 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:15,668 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:15,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129673685] [2019-12-07 12:36:15,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:15,724 INFO L264 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 12:36:15,725 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:15,728 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 12:36:15,728 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:36:15,729 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:36:15,729 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:36:15,730 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-12-07 12:36:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:15,796 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:15,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:15,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2019-12-07 12:36:15,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 6, 6, 6] total 16 [2019-12-07 12:36:15,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548628936] [2019-12-07 12:36:15,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 12:36:15,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:15,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 12:36:15,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2019-12-07 12:36:15,812 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 8 states. [2019-12-07 12:36:16,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:16,085 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2019-12-07 12:36:16,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 12:36:16,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-12-07 12:36:16,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:16,086 INFO L225 Difference]: With dead ends: 63 [2019-12-07 12:36:16,086 INFO L226 Difference]: Without dead ends: 63 [2019-12-07 12:36:16,086 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2019-12-07 12:36:16,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-12-07 12:36:16,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2019-12-07 12:36:16,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-12-07 12:36:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2019-12-07 12:36:16,088 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 30 [2019-12-07 12:36:16,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:16,088 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2019-12-07 12:36:16,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 12:36:16,088 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2019-12-07 12:36:16,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 12:36:16,088 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:16,089 INFO L410 BasicCegarLoop]: trace histogram [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, 1] [2019-12-07 12:36:16,690 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 cvc4 --incremental --print-success --lang smt --rewrite-divk,36 mathsat -unsat_core_generation=3 [2019-12-07 12:36:16,691 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:16,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:16,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1821512688, now seen corresponding path program 1 times [2019-12-07 12:36:16,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:16,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723859565] [2019-12-07 12:36:16,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 39 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:16,805 INFO L264 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:16,806 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:16,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:16,834 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:16,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723859565] [2019-12-07 12:36:16,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [75003069] [2019-12-07 12:36:16,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 40 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:17,032 INFO L264 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:17,032 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:17,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:17,034 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:17,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705610240] [2019-12-07 12:36:17,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:17,095 INFO L264 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2019-12-07 12:36:17,096 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:17,107 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 12:36:17,107 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:36:17,110 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:36:17,110 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:36:17,110 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-12-07 12:36:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:17,217 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:17,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2019-12-07 12:36:17,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [6, 6, 6, 6] total 24 [2019-12-07 12:36:17,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61741035] [2019-12-07 12:36:17,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 12:36:17,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:17,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 12:36:17,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2019-12-07 12:36:17,747 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 16 states. [2019-12-07 12:36:18,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:18,345 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2019-12-07 12:36:18,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 12:36:18,346 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2019-12-07 12:36:18,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:18,347 INFO L225 Difference]: With dead ends: 57 [2019-12-07 12:36:18,347 INFO L226 Difference]: Without dead ends: 57 [2019-12-07 12:36:18,347 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2019-12-07 12:36:18,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-12-07 12:36:18,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-12-07 12:36:18,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-12-07 12:36:18,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2019-12-07 12:36:18,349 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 30 [2019-12-07 12:36:18,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:18,349 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2019-12-07 12:36:18,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 12:36:18,349 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2019-12-07 12:36:18,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-12-07 12:36:18,350 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:18,350 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:18,951 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 mathsat -unsat_core_generation=3,40 cvc4 --incremental --print-success --lang smt --rewrite-divk,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:18,952 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:18,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:18,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1129251155, now seen corresponding path program 1 times [2019-12-07 12:36:18,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:18,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959150134] [2019-12-07 12:36:18,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 42 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:19,083 INFO L264 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:19,084 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:19,104 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:19,160 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959150134] [2019-12-07 12:36:19,160 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1503712278] [2019-12-07 12:36:19,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 43 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:19,330 INFO L264 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:19,331 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:19,334 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:19,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389109875] [2019-12-07 12:36:19,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:19,407 INFO L264 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-07 12:36:19,408 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:19,411 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 12:36:19,411 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:36:19,412 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:36:19,412 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:36:19,413 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-12-07 12:36:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:19,503 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 12:36:19,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2019-12-07 12:36:19,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [6, 6, 6, 6] total 17 [2019-12-07 12:36:19,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403251548] [2019-12-07 12:36:19,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 12:36:19,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:19,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 12:36:19,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2019-12-07 12:36:19,522 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 9 states. [2019-12-07 12:36:19,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:19,833 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2019-12-07 12:36:19,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 12:36:19,833 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2019-12-07 12:36:19,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:19,833 INFO L225 Difference]: With dead ends: 59 [2019-12-07 12:36:19,833 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 12:36:19,834 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2019-12-07 12:36:19,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 12:36:19,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2019-12-07 12:36:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-12-07 12:36:19,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2019-12-07 12:36:19,835 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 36 [2019-12-07 12:36:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:19,835 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2019-12-07 12:36:19,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 12:36:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2019-12-07 12:36:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-12-07 12:36:19,835 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:19,835 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:20,437 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 mathsat -unsat_core_generation=3,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,43 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:20,438 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:20,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:20,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1129251156, now seen corresponding path program 1 times [2019-12-07 12:36:20,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:20,440 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204247013] [2019-12-07 12:36:20,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 45 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:20,601 INFO L264 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:20,602 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:20,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:20,623 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:20,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204247013] [2019-12-07 12:36:20,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2029906142] [2019-12-07 12:36:20,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 46 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:20,859 INFO L264 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:20,860 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:20,863 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:20,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338619567] [2019-12-07 12:36:20,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:20,938 INFO L264 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:36:20,939 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:20,941 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:20,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2019-12-07 12:36:20,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2019-12-07 12:36:20,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248368575] [2019-12-07 12:36:20,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 12:36:20,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:20,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 12:36:20,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-12-07 12:36:20,943 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 10 states. [2019-12-07 12:36:21,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:21,074 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2019-12-07 12:36:21,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 12:36:21,075 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2019-12-07 12:36:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:21,075 INFO L225 Difference]: With dead ends: 59 [2019-12-07 12:36:21,075 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 12:36:21,076 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2019-12-07 12:36:21,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 12:36:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-12-07 12:36:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-12-07 12:36:21,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2019-12-07 12:36:21,077 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 36 [2019-12-07 12:36:21,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:21,077 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2019-12-07 12:36:21,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 12:36:21,077 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2019-12-07 12:36:21,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-12-07 12:36:21,077 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:21,077 INFO L410 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:21,678 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 mathsat -unsat_core_generation=3,46 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:21,678 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:21,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:21,679 INFO L82 PathProgramCache]: Analyzing trace with hash 559364180, now seen corresponding path program 2 times [2019-12-07 12:36:21,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:21,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228408483] [2019-12-07 12:36:21,679 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 48 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:21,779 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-12-07 12:36:21,779 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:36:21,789 INFO L264 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 42 conjunts are in the unsatisfiable core [2019-12-07 12:36:21,790 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:21,798 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 12:36:21,798 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:36:21,802 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:36:21,802 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:36:21,802 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-12-07 12:36:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-12-07 12:36:21,880 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-12-07 12:36:22,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228408483] [2019-12-07 12:36:22,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:36:22,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2019-12-07 12:36:22,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843658633] [2019-12-07 12:36:22,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 12:36:22,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:22,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 12:36:22,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2019-12-07 12:36:22,436 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 18 states. [2019-12-07 12:36:23,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:23,121 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2019-12-07 12:36:23,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 12:36:23,122 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2019-12-07 12:36:23,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:23,122 INFO L225 Difference]: With dead ends: 61 [2019-12-07 12:36:23,122 INFO L226 Difference]: Without dead ends: 61 [2019-12-07 12:36:23,123 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2019-12-07 12:36:23,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-12-07 12:36:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2019-12-07 12:36:23,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-12-07 12:36:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2019-12-07 12:36:23,124 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 40 [2019-12-07 12:36:23,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:23,124 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2019-12-07 12:36:23,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 12:36:23,124 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2019-12-07 12:36:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-12-07 12:36:23,124 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:23,125 INFO L410 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:23,325 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 mathsat -unsat_core_generation=3 [2019-12-07 12:36:23,326 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:23,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:23,327 INFO L82 PathProgramCache]: Analyzing trace with hash 678898265, now seen corresponding path program 1 times [2019-12-07 12:36:23,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:23,328 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595913062] [2019-12-07 12:36:23,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 49 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:23,569 INFO L264 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 12:36:23,570 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:23,626 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:23,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595913062] [2019-12-07 12:36:23,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1605289017] [2019-12-07 12:36:23,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 50 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:24,064 INFO L264 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 12:36:24,065 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:24,069 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:24,069 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:24,072 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:24,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800453641] [2019-12-07 12:36:24,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:36:24,148 INFO L264 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 12:36:24,149 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:24,152 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:24,152 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:24,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2019-12-07 12:36:24,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 18 [2019-12-07 12:36:24,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262016344] [2019-12-07 12:36:24,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 12:36:24,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:24,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 12:36:24,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2019-12-07 12:36:24,156 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 18 states. [2019-12-07 12:36:24,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:24,807 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2019-12-07 12:36:24,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-07 12:36:24,808 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2019-12-07 12:36:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:24,808 INFO L225 Difference]: With dead ends: 65 [2019-12-07 12:36:24,808 INFO L226 Difference]: Without dead ends: 65 [2019-12-07 12:36:24,809 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2019-12-07 12:36:24,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-12-07 12:36:24,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2019-12-07 12:36:24,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-12-07 12:36:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2019-12-07 12:36:24,810 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 42 [2019-12-07 12:36:24,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:24,810 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2019-12-07 12:36:24,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 12:36:24,810 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2019-12-07 12:36:24,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 12:36:24,811 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:24,811 INFO L410 BasicCegarLoop]: trace histogram [14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:25,411 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 cvc4 --incremental --print-success --lang smt --rewrite-divk,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,49 mathsat -unsat_core_generation=3 [2019-12-07 12:36:25,412 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:25,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:25,413 INFO L82 PathProgramCache]: Analyzing trace with hash -307652519, now seen corresponding path program 2 times [2019-12-07 12:36:25,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:25,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239459913] [2019-12-07 12:36:25,415 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 52 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:25,685 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 12:36:25,685 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:36:25,712 INFO L264 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 12:36:25,713 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:25,904 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:26,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239459913] [2019-12-07 12:36:26,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [54584485] [2019-12-07 12:36:26,715 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/cvc4 Starting monitored process 53 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:27,304 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 12:36:27,304 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:36:27,311 INFO L264 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 12:36:27,312 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:27,318 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:27,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285372627] [2019-12-07 12:36:27,324 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:36:30,403 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 12:36:30,403 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:36:30,410 INFO L264 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 12:36:30,411 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:36:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:30,417 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:36:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:36:30,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2019-12-07 12:36:30,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 34 [2019-12-07 12:36:30,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25650501] [2019-12-07 12:36:30,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-12-07 12:36:30,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 12:36:30,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-12-07 12:36:30,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2019-12-07 12:36:30,421 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 34 states. [2019-12-07 12:36:30,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:36:30,994 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2019-12-07 12:36:30,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-07 12:36:30,994 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 50 [2019-12-07 12:36:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:36:30,995 INFO L225 Difference]: With dead ends: 67 [2019-12-07 12:36:30,995 INFO L226 Difference]: Without dead ends: 67 [2019-12-07 12:36:30,995 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2019-12-07 12:36:30,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-12-07 12:36:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2019-12-07 12:36:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-12-07 12:36:30,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2019-12-07 12:36:30,997 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 50 [2019-12-07 12:36:30,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:36:30,997 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2019-12-07 12:36:30,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-12-07 12:36:30,997 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2019-12-07 12:36:30,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-12-07 12:36:30,997 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:36:30,997 INFO L410 BasicCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:36:31,598 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,52 mathsat -unsat_core_generation=3,53 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 12:36:31,599 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2019-12-07 12:36:31,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:36:31,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1129186265, now seen corresponding path program 3 times [2019-12-07 12:36:31,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 12:36:31,599 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650257259] [2019-12-07 12:36:31,599 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd1ce885-aadf-4cdf-800d-5f6a959305b1/bin/utaipan/mathsat Starting monitored process 55 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with mathsat -unsat_core_generation=3 [2019-12-07 12:36:32,254 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-12-07 12:36:32,254 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-12-07 12:36:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:36:32,590 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 12:36:32,591 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 12:36:32,791 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 mathsat -unsat_core_generation=3 [2019-12-07 12:36:32,831 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,832 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,832 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,833 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,833 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,833 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,834 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,835 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,835 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,835 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,836 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,836 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,837 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,837 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,837 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,838 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,838 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,839 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,839 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,839 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,840 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,840 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,841 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,841 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,841 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,841 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,842 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,842 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,843 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,843 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,843 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,843 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,844 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,844 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,845 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,845 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,845 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,845 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,846 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,846 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,846 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,847 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,847 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,847 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,847 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,847 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,847 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,848 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,849 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,849 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,849 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,849 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,849 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,849 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,849 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,850 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,850 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,850 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,850 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,850 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,851 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,851 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,851 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,851 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,851 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,851 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,851 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,851 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,852 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,852 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,852 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,852 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,852 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,852 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,853 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,853 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,853 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,853 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,853 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,853 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,854 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,854 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,854 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,854 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,854 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,854 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,854 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,854 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,855 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,855 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,855 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,855 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,855 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,855 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,855 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,855 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,856 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,856 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,856 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,856 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,856 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,856 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,856 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,856 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,856 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,857 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,857 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,857 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,857 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,857 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,857 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,857 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,858 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,858 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,858 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,858 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,858 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,858 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,858 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,858 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,859 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,859 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,859 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,859 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,859 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,859 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,859 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,859 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,860 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,860 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,860 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,860 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,860 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,860 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,860 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,861 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,861 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,861 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,861 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,861 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,861 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,861 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,861 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,862 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,862 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,862 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2019-12-07 12:36:32,862 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,862 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2019-12-07 12:36:32,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:36:32 BoogieIcfgContainer [2019-12-07 12:36:32,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:36:32,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:36:32,880 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:36:32,880 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:36:32,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:35:58" (3/4) ... [2019-12-07 12:36:32,883 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 12:36:32,883 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:36:32,884 INFO L168 Benchmark]: Toolchain (without parser) took 35437.29 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 336.6 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -113.0 MB). Peak memory consumption was 223.6 MB. Max. memory is 11.5 GB. [2019-12-07 12:36:32,884 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:36:32,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -111.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2019-12-07 12:36:32,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:36:32,885 INFO L168 Benchmark]: Boogie Preprocessor took 26.43 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:36:32,885 INFO L168 Benchmark]: RCFGBuilder took 391.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:36:32,885 INFO L168 Benchmark]: TraceAbstraction took 34544.59 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 231.7 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -52.7 MB). Peak memory consumption was 179.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:36:32,885 INFO L168 Benchmark]: Witness Printer took 3.13 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:36:32,887 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 428.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -111.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.43 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 391.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 34544.59 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 231.7 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -52.7 MB). Peak memory consumption was 179.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.13 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 769]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 769. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={3:0}] [L764] struct ldv_kobject *kobj; [L740] struct ldv_kobject *kobj; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [ldv_global_msg_list={3:0}] [L741] kobj = ldv_malloc(sizeof(*kobj)) [L742] COND FALSE !(!kobj) [L730] COND FALSE !(!kobj) [L723] COND FALSE !(!kobj) [L682] ((&kref->refcount)->counter) = (1) VAL [ldv_global_msg_list={3:0}] [L540] list->next = list VAL [ldv_global_msg_list={3:0}] [L541] list->prev = list VAL [ldv_global_msg_list={3:0}] [L746] return kobj; VAL [ldv_global_msg_list={3:0}] [L765] kobj = ldv_kobject_create() [L717] COND TRUE \read(*kobj) [L657] int temp; VAL [ldv_global_msg_list={3:0}] [L658] EXPR v->counter VAL [ldv_global_msg_list={3:0}] [L658] temp = v->counter [L659] temp += i VAL [ldv_global_msg_list={3:0}] [L660] v->counter = temp VAL [ldv_global_msg_list={3:0}] [L661] return temp; VAL [ldv_global_msg_list={3:0}] [L719] return kobj; VAL [ldv_global_msg_list={3:0}] [L711] COND TRUE \read(*kobj) [L665] int temp; VAL [ldv_global_msg_list={3:0}] [L666] EXPR v->counter VAL [ldv_global_msg_list={3:0}] [L666] temp = v->counter [L667] temp -= i VAL [ldv_global_msg_list={3:0}] [L668] v->counter = temp VAL [ldv_global_msg_list={3:0}] [L669] return temp; VAL [ldv_global_msg_list={3:0}] [L674] COND FALSE !((ldv_atomic_sub_return(((int) count), (&kref->refcount)) == 0)) [L678] return 0; VAL [ldv_global_msg_list={3:0}] [L690] return ldv_kref_sub(kref, 1, release); - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 73 locations, 25 error locations. Result: UNSAFE, OverallTime: 34.4s, OverallIterations: 26, TraceHistogramMax: 16, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1797 SDtfs, 5746 SDslu, 3835 SDs, 0 SdLazy, 1987 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2509 GetRequests, 2125 SyntacticMatches, 4 SemanticMatches, 380 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 25 MinimizatonAttempts, 845 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 1317 NumberOfCodeBlocks, 1311 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 2424 ConstructedInterpolants, 0 QuantifiedInterpolants, 233686 SizeOfPredicates, 322 NumberOfNonLiveVariables, 6547 ConjunctsInSsa, 498 ConjunctsInUnsatCore, 106 InterpolantComputations, 44 PerfectInterpolantSequences, 120/1026 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...