./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9a657fa9aacca0974ed9e42f1311e36e1c5af368a54222ebad4a487f8951064 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:09:33,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:09:33,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:09:34,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:09:34,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:09:34,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:09:34,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:09:34,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:09:34,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:09:34,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:09:34,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:09:34,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:09:34,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:09:34,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:09:34,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:09:34,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:09:34,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:09:34,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:09:34,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:09:34,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:09:34,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:09:34,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:09:34,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:09:34,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:09:34,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:09:34,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:09:34,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:09:34,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:09:34,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:09:34,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:09:34,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:09:34,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:09:34,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:09:34,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:09:34,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:09:34,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:09:34,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:09:34,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:09:34,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:09:34,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:09:34,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:09:34,069 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:09:34,097 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:09:34,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:09:34,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:09:34,102 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:09:34,103 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:09:34,103 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:09:34,103 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:09:34,103 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:09:34,104 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:09:34,104 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:09:34,111 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:09:34,111 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:09:34,111 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:09:34,112 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:09:34,112 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:09:34,112 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:09:34,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:09:34,113 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:09:34,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:09:34,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:09:34,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:09:34,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:09:34,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:09:34,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:09:34,115 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:09:34,115 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:09:34,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:09:34,116 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:09:34,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:09:34,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:09:34,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:09:34,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:09:34,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:09:34,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:09:34,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:09:34,119 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:09:34,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:09:34,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:09:34,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:09:34,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:09:34,121 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9a657fa9aacca0974ed9e42f1311e36e1c5af368a54222ebad4a487f8951064 [2021-11-12 23:09:34,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:09:34,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:09:34,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:09:34,380 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:09:34,381 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:09:34,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c [2021-11-12 23:09:34,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/data/8645b8412/8af3327002d042f3bef380cab771830e/FLAG8899cbf80 [2021-11-12 23:09:35,076 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:09:35,077 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c [2021-11-12 23:09:35,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/data/8645b8412/8af3327002d042f3bef380cab771830e/FLAG8899cbf80 [2021-11-12 23:09:35,303 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/data/8645b8412/8af3327002d042f3bef380cab771830e [2021-11-12 23:09:35,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:09:35,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:09:35,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:35,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:09:35,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:09:35,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:35" (1/1) ... [2021-11-12 23:09:35,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63795f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:35, skipping insertion in model container [2021-11-12 23:09:35,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:35" (1/1) ... [2021-11-12 23:09:35,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:09:35,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:09:35,897 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c[73581,73594] [2021-11-12 23:09:35,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:35,941 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:09:35,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@8bee839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:35, skipping insertion in model container [2021-11-12 23:09:35,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:35,946 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:09:35,949 INFO L158 Benchmark]: Toolchain (without parser) took 639.98ms. Allocated memory is still 96.5MB. Free memory was 60.4MB in the beginning and 61.5MB in the end (delta: -1.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 23:09:35,950 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 96.5MB. Free memory was 50.9MB in the beginning and 50.8MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:09:35,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 635.58ms. Allocated memory is still 96.5MB. Free memory was 60.2MB in the beginning and 61.5MB in the end (delta: -1.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 23:09:35,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 96.5MB. Free memory was 50.9MB in the beginning and 50.8MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 635.58ms. Allocated memory is still 96.5MB. Free memory was 60.2MB in the beginning and 61.5MB in the end (delta: -1.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9a657fa9aacca0974ed9e42f1311e36e1c5af368a54222ebad4a487f8951064 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:09:38,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:09:38,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:09:38,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:09:38,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:09:38,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:09:38,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:09:38,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:09:38,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:09:38,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:09:38,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:09:38,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:09:38,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:09:38,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:09:38,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:09:38,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:09:38,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:09:38,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:09:38,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:09:38,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:09:38,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:09:38,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:09:38,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:09:38,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:09:38,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:09:38,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:09:38,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:09:38,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:09:38,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:09:38,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:09:38,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:09:38,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:09:38,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:09:38,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:09:38,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:09:38,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:09:38,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:09:38,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:09:38,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:09:38,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:09:38,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:09:38,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:09:38,340 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:09:38,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:09:38,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:09:38,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:09:38,343 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:09:38,343 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:09:38,343 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:09:38,343 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:09:38,344 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:09:38,344 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:09:38,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:09:38,345 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:09:38,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:09:38,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:09:38,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:09:38,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:09:38,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:09:38,347 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:09:38,347 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:09:38,348 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:09:38,348 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:09:38,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:09:38,348 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:09:38,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:09:38,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:09:38,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:09:38,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:09:38,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:09:38,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:09:38,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:09:38,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:09:38,351 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:09:38,352 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:09:38,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:09:38,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:09:38,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:09:38,353 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9a657fa9aacca0974ed9e42f1311e36e1c5af368a54222ebad4a487f8951064 [2021-11-12 23:09:38,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:09:38,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:09:38,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:09:38,738 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:09:38,739 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:09:38,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c [2021-11-12 23:09:38,816 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/data/87d736960/9dce74b3d2504acd9c76f065dbb29a0a/FLAGab6b58cad [2021-11-12 23:09:39,519 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:09:39,520 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c [2021-11-12 23:09:39,548 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/data/87d736960/9dce74b3d2504acd9c76f065dbb29a0a/FLAGab6b58cad [2021-11-12 23:09:39,718 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/data/87d736960/9dce74b3d2504acd9c76f065dbb29a0a [2021-11-12 23:09:39,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:09:39,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:09:39,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:39,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:09:39,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:09:39,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:39" (1/1) ... [2021-11-12 23:09:39,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf3bd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:39, skipping insertion in model container [2021-11-12 23:09:39,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:39" (1/1) ... [2021-11-12 23:09:39,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:09:39,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:09:40,342 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c[73581,73594] [2021-11-12 23:09:40,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:40,378 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:09:40,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:09:40,574 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c[73581,73594] [2021-11-12 23:09:40,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:40,591 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:09:40,741 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-1.c[73581,73594] [2021-11-12 23:09:40,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:40,782 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:09:40,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40 WrapperNode [2021-11-12 23:09:40,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:40,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:09:40,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:09:40,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:09:40,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:09:40,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:09:40,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:09:40,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:09:40,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:40,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:09:40,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:09:40,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:09:40,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:09:40,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (1/1) ... [2021-11-12 23:09:41,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:09:41,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:09:41,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:09:41,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:09:41,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:09:41,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:09:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:09:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:09:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:09:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:09:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:09:41,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:09:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:09:41,314 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:09:50,098 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-12 23:09:50,098 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-12 23:09:50,107 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:09:50,107 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:09:50,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:09:50 BoogieIcfgContainer [2021-11-12 23:09:50,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:09:50,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:09:50,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:09:50,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:09:50,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:09:39" (1/3) ... [2021-11-12 23:09:50,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ff77c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:09:50, skipping insertion in model container [2021-11-12 23:09:50,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:40" (2/3) ... [2021-11-12 23:09:50,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ff77c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:09:50, skipping insertion in model container [2021-11-12 23:09:50,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:09:50" (3/3) ... [2021-11-12 23:09:50,117 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.10.i.cil-1.c [2021-11-12 23:09:50,122 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:09:50,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:09:50,170 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:09:50,176 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:09:50,177 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:09:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 147 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:09:50,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-12 23:09:50,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:50,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:50,230 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:50,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:50,235 INFO L85 PathProgramCache]: Analyzing trace with hash 917223054, now seen corresponding path program 1 times [2021-11-12 23:09:50,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:50,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097332969] [2021-11-12 23:09:50,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:50,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:50,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:50,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:50,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:09:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:50,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:09:50,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:50,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:51,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:51,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097332969] [2021-11-12 23:09:51,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097332969] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:51,027 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:09:51,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:09:51,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820658204] [2021-11-12 23:09:51,029 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:51,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:09:51,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:51,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:09:51,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:09:51,071 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 147 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:09:51,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:51,289 INFO L93 Difference]: Finished difference Result 554 states and 944 transitions. [2021-11-12 23:09:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:09:51,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-12 23:09:51,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:51,319 INFO L225 Difference]: With dead ends: 554 [2021-11-12 23:09:51,320 INFO L226 Difference]: Without dead ends: 377 [2021-11-12 23:09:51,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:09:51,329 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 574 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.01ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.02ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:51,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 662 Invalid, 59 Unknown, 0 Unchecked, 17.01ms Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 89.02ms Time] [2021-11-12 23:09:51,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-12 23:09:51,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-12 23:09:51,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.5265957446808511) internal successors, (574), 376 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:09:51,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 574 transitions. [2021-11-12 23:09:51,411 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 574 transitions. Word has length 44 [2021-11-12 23:09:51,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:51,413 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 574 transitions. [2021-11-12 23:09:51,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:09:51,413 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 574 transitions. [2021-11-12 23:09:51,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-12 23:09:51,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:51,428 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:51,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:09:51,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:51,634 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:51,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2042718613, now seen corresponding path program 1 times [2021-11-12 23:09:51,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:51,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910505956] [2021-11-12 23:09:51,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:51,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:51,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:51,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:51,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:09:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:51,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:09:51,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:52,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:52,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:52,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910505956] [2021-11-12 23:09:52,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910505956] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:52,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:09:52,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:09:52,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556397027] [2021-11-12 23:09:52,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:52,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:09:52,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:52,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:09:52,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:09:52,683 INFO L87 Difference]: Start difference. First operand 377 states and 574 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:09:53,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:53,158 INFO L93 Difference]: Finished difference Result 862 states and 1324 transitions. [2021-11-12 23:09:53,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:09:53,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-12 23:09:53,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:53,163 INFO L225 Difference]: With dead ends: 862 [2021-11-12 23:09:53,164 INFO L226 Difference]: Without dead ends: 617 [2021-11-12 23:09:53,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:09:53,171 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 291 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 416.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.97ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 442.28ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:53,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 721 Invalid, 62 Unknown, 0 Unchecked, 2.97ms Time], IncrementalHoareTripleChecker [18 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 442.28ms Time] [2021-11-12 23:09:53,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-11-12 23:09:53,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2021-11-12 23:09:53,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 1.521103896103896) internal successors, (937), 616 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:09:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 937 transitions. [2021-11-12 23:09:53,211 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 937 transitions. Word has length 105 [2021-11-12 23:09:53,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:53,212 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 937 transitions. [2021-11-12 23:09:53,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:09:53,212 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 937 transitions. [2021-11-12 23:09:53,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-12 23:09:53,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:53,216 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:53,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:53,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:53,440 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:53,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:53,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1716174966, now seen corresponding path program 1 times [2021-11-12 23:09:53,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:53,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19224714] [2021-11-12 23:09:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:53,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:53,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:53,445 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:53,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:09:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:53,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:09:53,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:09:54,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:09:54,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:54,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19224714] [2021-11-12 23:09:54,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19224714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:54,799 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:09:54,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:09:54,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355113819] [2021-11-12 23:09:54,799 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:54,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:09:54,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:54,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:09:54,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:09:54,801 INFO L87 Difference]: Start difference. First operand 617 states and 937 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:09:55,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:55,302 INFO L93 Difference]: Finished difference Result 1222 states and 1863 transitions. [2021-11-12 23:09:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:09:55,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-11-12 23:09:55,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:55,309 INFO L225 Difference]: With dead ends: 1222 [2021-11-12 23:09:55,309 INFO L226 Difference]: Without dead ends: 737 [2021-11-12 23:09:55,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:09:55,312 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 138 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 451.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.04ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 472.06ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:55,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 567 Invalid, 27 Unknown, 0 Unchecked, 2.04ms Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 472.06ms Time] [2021-11-12 23:09:55,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-11-12 23:09:55,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2021-11-12 23:09:55,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 1.517663043478261) internal successors, (1117), 736 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:09:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1117 transitions. [2021-11-12 23:09:55,345 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1117 transitions. Word has length 169 [2021-11-12 23:09:55,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:55,346 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 1117 transitions. [2021-11-12 23:09:55,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:09:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1117 transitions. [2021-11-12 23:09:55,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-12 23:09:55,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:55,351 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:55,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:55,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:55,562 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:55,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:55,563 INFO L85 PathProgramCache]: Analyzing trace with hash 738648727, now seen corresponding path program 1 times [2021-11-12 23:09:55,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:55,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674417750] [2021-11-12 23:09:55,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:55,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:55,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:55,567 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:55,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:09:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:56,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:09:56,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:56,585 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-12 23:09:56,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-12 23:09:57,112 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:57,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674417750] [2021-11-12 23:09:57,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674417750] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:57,113 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:09:57,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:09:57,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898737204] [2021-11-12 23:09:57,114 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:57,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:09:57,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:57,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:09:57,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:09:57,128 INFO L87 Difference]: Start difference. First operand 737 states and 1117 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:09:57,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:57,953 INFO L93 Difference]: Finished difference Result 1582 states and 2409 transitions. [2021-11-12 23:09:57,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:09:57,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-12 23:09:57,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:57,963 INFO L225 Difference]: With dead ends: 1582 [2021-11-12 23:09:57,964 INFO L226 Difference]: Without dead ends: 977 [2021-11-12 23:09:57,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:09:57,969 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 289 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 753.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.41ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 776.74ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:57,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 724 Invalid, 60 Unknown, 0 Unchecked, 3.41ms Time], IncrementalHoareTripleChecker [16 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 776.74ms Time] [2021-11-12 23:09:57,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-11-12 23:09:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2021-11-12 23:09:58,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.5153688524590163) internal successors, (1479), 976 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:09:58,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1479 transitions. [2021-11-12 23:09:58,020 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1479 transitions. Word has length 210 [2021-11-12 23:09:58,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:58,022 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1479 transitions. [2021-11-12 23:09:58,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:09:58,023 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1479 transitions. [2021-11-12 23:09:58,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-12 23:09:58,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:58,032 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:58,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:58,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:58,251 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:58,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:58,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1549103668, now seen corresponding path program 1 times [2021-11-12 23:09:58,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:58,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517808195] [2021-11-12 23:09:58,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:58,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:58,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:58,258 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:58,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:09:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:59,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:09:59,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:59,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-11-12 23:09:59,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-11-12 23:09:59,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:09:59,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-12 23:09:59,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:09:59,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-12 23:09:59,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-12 23:09:59,882 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-12 23:09:59,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 1289 treesize of output 1241 [2021-11-12 23:10:00,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:10:00,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-12 23:10:00,016 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:10:00,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-12 23:10:00,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-12 23:10:00,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2021-11-12 23:10:00,266 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-12 23:10:00,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-12 23:10:00,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:00,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-12 23:10:00,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-12 23:10:00,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-12 23:10:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-12 23:10:01,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:01,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:10:01,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-12 23:10:01,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:10:01,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-12 23:10:01,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:10:01,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-12 23:10:02,006 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:10:02,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-12 23:10:02,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:10:02,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-12 23:10:02,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:10:02,043 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-12 23:10:02,061 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:10:02,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-12 23:10:02,097 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:10:02,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-12 23:10:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-12 23:10:02,591 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:02,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517808195] [2021-11-12 23:10:02,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517808195] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:02,592 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:02,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 23:10:02,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725135583] [2021-11-12 23:10:02,593 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:02,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:10:02,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:02,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:10:02,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:10:02,595 INFO L87 Difference]: Start difference. First operand 977 states and 1479 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:10:04,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:12,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:14,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:14,010 INFO L93 Difference]: Finished difference Result 1951 states and 2954 transitions. [2021-11-12 23:10:14,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:10:14,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2021-11-12 23:10:14,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:14,018 INFO L225 Difference]: With dead ends: 1951 [2021-11-12 23:10:14,018 INFO L226 Difference]: Without dead ends: 977 [2021-11-12 23:10:14,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 575 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:10:14,021 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 5 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11012.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 11335.66ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:14,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 760 Invalid, 268 Unknown, 0 Unchecked, 4.04ms Time], IncrementalHoareTripleChecker [0 Valid, 209 Invalid, 1 Unknown, 58 Unchecked, 11335.66ms Time] [2021-11-12 23:10:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-11-12 23:10:14,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2021-11-12 23:10:14,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.514344262295082) internal successors, (1478), 976 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:10:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1478 transitions. [2021-11-12 23:10:14,065 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1478 transitions. Word has length 292 [2021-11-12 23:10:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:14,065 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1478 transitions. [2021-11-12 23:10:14,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:10:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1478 transitions. [2021-11-12 23:10:14,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-12 23:10:14,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:14,072 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:14,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:14,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:14,286 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:14,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:14,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1801868810, now seen corresponding path program 1 times [2021-11-12 23:10:14,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:14,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619461400] [2021-11-12 23:10:14,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:14,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:14,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:14,289 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:14,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:10:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:15,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:10:15,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:15,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:15,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:15,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:10:15,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:10:15,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:10:15,908 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-12 23:10:15,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-12 23:10:15,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:10:15,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:10:15,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:10:16,303 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-12 23:10:16,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-12 23:10:18,815 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 23:10:18,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-12 23:10:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-12 23:10:19,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-12 23:10:19,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:19,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619461400] [2021-11-12 23:10:19,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619461400] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:19,963 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:19,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-12 23:10:19,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062947515] [2021-11-12 23:10:19,964 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:19,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:10:19,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:19,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:10:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:10:19,966 INFO L87 Difference]: Start difference. First operand 977 states and 1478 transitions. Second operand has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:10:21,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:25,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:34,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:37,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:44,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:45,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:47,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:48,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:59,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:09,959 INFO L93 Difference]: Finished difference Result 4405 states and 6696 transitions. [2021-11-12 23:11:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:11:09,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2021-11-12 23:11:09,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:09,982 INFO L225 Difference]: With dead ends: 4405 [2021-11-12 23:11:09,982 INFO L226 Difference]: Without dead ends: 3438 [2021-11-12 23:11:09,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 576 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:11:09,986 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 335 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 83 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48377.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.31ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49711.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:09,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 1193 Invalid, 1231 Unknown, 0 Unchecked, 13.31ms Time], IncrementalHoareTripleChecker [83 Valid, 1146 Invalid, 2 Unknown, 0 Unchecked, 49711.52ms Time] [2021-11-12 23:11:09,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2021-11-12 23:11:10,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 1319. [2021-11-12 23:11:10,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.5933232169954477) internal successors, (2100), 1318 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:11:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2100 transitions. [2021-11-12 23:11:10,074 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2100 transitions. Word has length 292 [2021-11-12 23:11:10,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:10,074 INFO L470 AbstractCegarLoop]: Abstraction has 1319 states and 2100 transitions. [2021-11-12 23:11:10,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:11:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2100 transitions. [2021-11-12 23:11:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-12 23:11:10,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:10,081 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:11:10,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:11:10,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:10,303 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:11:10,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1372210504, now seen corresponding path program 1 times [2021-11-12 23:11:10,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:10,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685967004] [2021-11-12 23:11:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:10,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:10,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:10,306 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:10,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:11:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:14,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-12 23:11:14,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:06,760 WARN L227 SmtUtils]: Spent 1.87m on a formula simplification. DAG size of input: 66 DAG size of output: 15 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:13:06,760 INFO L354 Elim1Store]: treesize reduction 200, result has 14.2 percent of original size [2021-11-12 23:13:06,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 4167 treesize of output 4178 [2021-11-12 23:13:06,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 4162 treesize of output 4126 [2021-11-12 23:13:06,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:13:06,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5264 [2021-11-12 23:13:06,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 5526 treesize of output 5242 [2021-11-12 23:13:06,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:06,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:13:07,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 4321 treesize of output 4094 [2021-11-12 23:13:07,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4406 treesize of output 4276 [2021-11-12 23:13:07,058 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-12 23:13:07,069 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:07,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685967004] [2021-11-12 23:13:07,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-12 23:13:07,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [372281874] [2021-11-12 23:13:07,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:07,071 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:13:07,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:13:07,083 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:13:07,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd9437d-f0b2-4c74-b0d0-329b76d7c903/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process