./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.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_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/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_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/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_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/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 d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:43:09,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:43:09,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:43:09,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:43:09,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:43:09,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:43:09,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:43:09,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:43:09,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:43:09,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:43:09,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:43:09,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:43:09,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:43:09,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:43:09,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:43:09,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:43:09,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:43:09,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:43:09,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:43:09,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:43:09,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:43:09,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:43:09,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:43:09,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:43:09,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:43:09,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:43:09,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:43:09,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:43:09,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:43:09,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:43:09,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:43:09,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:43:09,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:43:09,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:43:09,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:43:09,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:43:09,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:43:09,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:43:09,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:43:09,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:43:09,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:43:09,453 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 01:43:09,498 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:43:09,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:43:09,500 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:43:09,500 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:43:09,500 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:43:09,500 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:43:09,501 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:43:09,501 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:43:09,507 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:43:09,507 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:43:09,509 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:43:09,509 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:43:09,509 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:43:09,509 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:43:09,510 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:43:09,510 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:43:09,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:43:09,511 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:43:09,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:43:09,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:43:09,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:43:09,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:43:09,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:43:09,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:43:09,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:43:09,513 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:43:09,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:43:09,513 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:43:09,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:43:09,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:43:09,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:43:09,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:43:09,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:43:09,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:43:09,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:43:09,517 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:43:09,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:43:09,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:43:09,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:43:09,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:43:09,518 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_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 [2021-11-13 01:43:09,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:43:09,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:43:09,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:43:09,806 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:43:09,806 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:43:09,808 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2021-11-13 01:43:09,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/data/2cfd86c8b/4706ae6708f345aaaaf773521f3b07ae/FLAGe4fa2367a [2021-11-13 01:43:10,371 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:43:10,371 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2021-11-13 01:43:10,379 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/data/2cfd86c8b/4706ae6708f345aaaaf773521f3b07ae/FLAGe4fa2367a [2021-11-13 01:43:10,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/data/2cfd86c8b/4706ae6708f345aaaaf773521f3b07ae [2021-11-13 01:43:10,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:43:10,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:43:10,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:43:10,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:43:10,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:43:10,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:43:10" (1/1) ... [2021-11-13 01:43:10,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1047c047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:10, skipping insertion in model container [2021-11-13 01:43:10,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:43:10" (1/1) ... [2021-11-13 01:43:10,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:43:10,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:43:11,014 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_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2021-11-13 01:43:11,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:43:11,033 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) [2021-11-13 01:43:11,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@42b64de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:11, skipping insertion in model container [2021-11-13 01:43:11,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:43:11,034 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:43:11,036 INFO L158 Benchmark]: Toolchain (without parser) took 283.10ms. Allocated memory is still 94.4MB. Free memory was 61.2MB in the beginning and 69.8MB in the end (delta: -8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 01:43:11,037 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 94.4MB. Free memory was 47.3MB in the beginning and 47.3MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:43:11,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.47ms. Allocated memory is still 94.4MB. Free memory was 60.9MB in the beginning and 69.8MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 01:43:11,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 94.4MB. Free memory was 47.3MB in the beginning and 47.3MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.47ms. Allocated memory is still 94.4MB. Free memory was 60.9MB in the beginning and 69.8MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 118]: 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_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/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_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/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_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/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 d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:43:13,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:43:13,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:43:13,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:43:13,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:43:13,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:43:13,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:43:13,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:43:13,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:43:13,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:43:13,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:43:13,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:43:13,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:43:13,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:43:13,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:43:13,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:43:13,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:43:13,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:43:13,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:43:13,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:43:13,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:43:13,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:43:13,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:43:13,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:43:13,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:43:13,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:43:13,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:43:13,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:43:13,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:43:13,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:43:13,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:43:13,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:43:13,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:43:13,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:43:13,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:43:13,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:43:13,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:43:13,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:43:13,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:43:13,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:43:13,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:43:13,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 01:43:13,380 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:43:13,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:43:13,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:43:13,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:43:13,384 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:43:13,388 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:43:13,388 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:43:13,388 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:43:13,388 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:43:13,389 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:43:13,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:43:13,391 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:43:13,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:43:13,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:43:13,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:43:13,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:43:13,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:43:13,393 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:43:13,393 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:43:13,393 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:43:13,393 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:43:13,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:43:13,394 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:43:13,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:43:13,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:43:13,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:43:13,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:43:13,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:43:13,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:43:13,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:43:13,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:43:13,396 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:43:13,396 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:43:13,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:43:13,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:43:13,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:43:13,397 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_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 [2021-11-13 01:43:13,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:43:13,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:43:13,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:43:13,786 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:43:13,786 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:43:13,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2021-11-13 01:43:13,847 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/data/c27587fbb/68b8dea896634b7281b8fc0ffd794761/FLAG87934e8f8 [2021-11-13 01:43:14,398 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:43:14,399 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2021-11-13 01:43:14,406 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/data/c27587fbb/68b8dea896634b7281b8fc0ffd794761/FLAG87934e8f8 [2021-11-13 01:43:14,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/data/c27587fbb/68b8dea896634b7281b8fc0ffd794761 [2021-11-13 01:43:14,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:43:14,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:43:14,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:43:14,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:43:14,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:43:14,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:43:14" (1/1) ... [2021-11-13 01:43:14,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388be5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:14, skipping insertion in model container [2021-11-13 01:43:14,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:43:14" (1/1) ... [2021-11-13 01:43:14,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:43:14,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:43:15,020 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_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2021-11-13 01:43:15,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:43:15,077 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:43:15,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:43:15,109 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_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2021-11-13 01:43:15,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:43:15,122 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:43:15,146 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_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2021-11-13 01:43:15,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:43:15,167 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:43:15,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15 WrapperNode [2021-11-13 01:43:15,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:43:15,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:43:15,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:43:15,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:43:15,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:43:15,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:43:15,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:43:15,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:43:15,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:43:15,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:43:15,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:43:15,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:43:15,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (1/1) ... [2021-11-13 01:43:15,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:43:15,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:43:15,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:43:15,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:43:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:43:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:43:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:43:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-13 01:43:15,371 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-13 01:43:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-13 01:43:15,371 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-13 01:43:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-13 01:43:15,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-13 01:43:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:43:15,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:43:15,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:43:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:43:15,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:43:15,375 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 01:43:16,245 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:43:16,245 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-13 01:43:16,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:43:16 BoogieIcfgContainer [2021-11-13 01:43:16,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:43:16,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:43:16,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:43:16,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:43:16,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:43:14" (1/3) ... [2021-11-13 01:43:16,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e8464b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:43:16, skipping insertion in model container [2021-11-13 01:43:16,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:15" (2/3) ... [2021-11-13 01:43:16,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e8464b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:43:16, skipping insertion in model container [2021-11-13 01:43:16,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:43:16" (3/3) ... [2021-11-13 01:43:16,255 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2021-11-13 01:43:16,261 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 01:43:16,261 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:43:16,261 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:43:16,261 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 01:43:16,308 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,308 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,308 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,309 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,310 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,311 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,312 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,312 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,312 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,312 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,312 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,314 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,314 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,314 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,314 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,314 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,314 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,318 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,319 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,319 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,319 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,319 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,319 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,319 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,320 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,320 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,320 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,320 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,320 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,320 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,321 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,321 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,321 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,321 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,321 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,321 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,322 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,322 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,322 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,322 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,322 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,322 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,323 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,323 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,323 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,323 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,323 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,327 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,327 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,327 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,327 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,327 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,327 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,328 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,328 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,328 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,328 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,328 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,329 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,330 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,331 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,331 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,331 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,331 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,335 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,335 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,335 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,335 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,335 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,335 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,336 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,336 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,336 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,336 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,336 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,336 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,337 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,337 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,337 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,337 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,337 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,337 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,338 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,338 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,338 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,338 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,338 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,338 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,342 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,342 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,342 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,342 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,342 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,342 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,343 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,343 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,343 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,343 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,343 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,343 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,343 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,344 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,344 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,344 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,344 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,344 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,344 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,345 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,345 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,345 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,345 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,345 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,345 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,346 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,346 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,346 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,346 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,346 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,346 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,347 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,347 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,347 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,347 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,347 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,347 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,348 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,348 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,348 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,348 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,348 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,348 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,349 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,349 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,349 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,349 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,349 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,349 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,350 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,350 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,350 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,350 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,350 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,350 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,351 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,351 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,351 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,351 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,351 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,351 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,352 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,352 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,352 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,352 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,352 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,352 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,353 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,353 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,353 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,354 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,354 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,354 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,354 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,354 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,355 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,355 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,355 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,355 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,355 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,355 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,356 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,356 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,356 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,356 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,356 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,357 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,357 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,357 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,357 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,357 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,357 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,358 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,358 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,358 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,358 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,358 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,358 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,358 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,359 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,359 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,359 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,360 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,360 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,360 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,360 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,360 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,360 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,361 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,361 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,361 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,361 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,361 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,361 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,362 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,362 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,362 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,362 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,362 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,362 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,362 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,365 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,365 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,365 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,365 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,365 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,365 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,365 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,366 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,366 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,366 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,366 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,366 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,366 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,367 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,367 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,367 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,367 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,367 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,367 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,367 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,368 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,368 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,368 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,395 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,395 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,396 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,396 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,396 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,396 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,396 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,396 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,397 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,397 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,397 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,397 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,397 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,397 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,398 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,398 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,398 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,398 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,398 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,398 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,399 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,399 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,399 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,399 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,399 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,400 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,400 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,400 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,400 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,400 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,400 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,401 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,401 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,401 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,404 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,404 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,404 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,406 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,406 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,406 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,406 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,406 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,406 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,407 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,410 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,410 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,410 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,410 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,411 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,411 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,411 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,411 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,411 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,412 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,412 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,412 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,412 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,412 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,412 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,413 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 01:43:16,418 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-13 01:43:16,466 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:43:16,473 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 [2021-11-13 01:43:16,473 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-13 01:43:16,491 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-13 01:43:16,504 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 330 places, 349 transitions, 722 flow [2021-11-13 01:43:16,507 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 330 places, 349 transitions, 722 flow [2021-11-13 01:43:16,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 330 places, 349 transitions, 722 flow [2021-11-13 01:43:16,727 INFO L129 PetriNetUnfolder]: 29/346 cut-off events. [2021-11-13 01:43:16,727 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-13 01:43:16,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 346 events. 29/346 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 570 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 261. Up to 3 conditions per place. [2021-11-13 01:43:16,751 INFO L116 LiptonReduction]: Number of co-enabled transitions 17934 [2021-11-13 01:43:42,557 INFO L131 LiptonReduction]: Checked pairs total: 19672 [2021-11-13 01:43:42,558 INFO L133 LiptonReduction]: Total number of compositions: 392 [2021-11-13 01:43:42,570 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 40 transitions, 104 flow [2021-11-13 01:43:42,616 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 349 states, 348 states have (on average 3.5344827586206895) internal successors, (1230), 348 states have internal predecessors, (1230), 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) [2021-11-13 01:43:42,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 349 states, 348 states have (on average 3.5344827586206895) internal successors, (1230), 348 states have internal predecessors, (1230), 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) [2021-11-13 01:43:42,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:43:42,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:42,654 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] [2021-11-13 01:43:42,655 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:43:42,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:42,662 INFO L85 PathProgramCache]: Analyzing trace with hash 254148698, now seen corresponding path program 1 times [2021-11-13 01:43:42,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:42,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253743944] [2021-11-13 01:43:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:42,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:42,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:42,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:42,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:43:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:42,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:43:42,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:44,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:46,839 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:43:46,841 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 377 treesize of output 437 [2021-11-13 01:43:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:49,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:49,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253743944] [2021-11-13 01:43:49,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253743944] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:49,567 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:49,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-13 01:43:49,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693095237] [2021-11-13 01:43:49,570 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:49,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 01:43:49,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:49,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 01:43:49,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:43:49,606 INFO L87 Difference]: Start difference. First operand has 349 states, 348 states have (on average 3.5344827586206895) internal successors, (1230), 348 states have internal predecessors, (1230), 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 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:56,509 INFO L93 Difference]: Finished difference Result 2780 states and 9416 transitions. [2021-11-13 01:43:56,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-13 01:43:56,512 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:43:56,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:56,554 INFO L225 Difference]: With dead ends: 2780 [2021-11-13 01:43:56,554 INFO L226 Difference]: Without dead ends: 2745 [2021-11-13 01:43:56,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=323, Invalid=937, Unknown=0, NotChecked=0, Total=1260 [2021-11-13 01:43:56,559 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 464 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3027.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.78ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 3409.95ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:56,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 32 Invalid, 970 Unknown, 0 Unchecked, 12.78ms Time], IncrementalHoareTripleChecker [74 Valid, 766 Invalid, 0 Unknown, 130 Unchecked, 3409.95ms Time] [2021-11-13 01:43:56,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2021-11-13 01:43:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 789. [2021-11-13 01:43:56,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 788 states have (on average 3.5621827411167515) internal successors, (2807), 788 states have internal predecessors, (2807), 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) [2021-11-13 01:43:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 2807 transitions. [2021-11-13 01:43:56,744 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 2807 transitions. Word has length 22 [2021-11-13 01:43:56,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:56,744 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 2807 transitions. [2021-11-13 01:43:56,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:56,745 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 2807 transitions. [2021-11-13 01:43:56,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:43:56,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:56,750 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] [2021-11-13 01:43:56,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:56,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:56,963 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:43:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:56,964 INFO L85 PathProgramCache]: Analyzing trace with hash 727522992, now seen corresponding path program 2 times [2021-11-13 01:43:56,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:56,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494279919] [2021-11-13 01:43:56,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:43:56,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:56,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:56,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:56,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:43:57,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 01:43:57,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:43:57,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:43:57,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:58,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:58,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:59,892 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:43:59,893 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 377 treesize of output 437 [2021-11-13 01:44:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:02,106 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:44:02,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494279919] [2021-11-13 01:44:02,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494279919] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:02,107 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:44:02,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-13 01:44:02,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335735528] [2021-11-13 01:44:02,107 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:02,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 01:44:02,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:44:02,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 01:44:02,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:44:02,110 INFO L87 Difference]: Start difference. First operand 789 states and 2807 transitions. Second operand has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:06,826 INFO L93 Difference]: Finished difference Result 2394 states and 8091 transitions. [2021-11-13 01:44:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 01:44:06,828 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:44:06,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:06,850 INFO L225 Difference]: With dead ends: 2394 [2021-11-13 01:44:06,851 INFO L226 Difference]: Without dead ends: 2376 [2021-11-13 01:44:06,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=209, Invalid=493, Unknown=0, NotChecked=0, Total=702 [2021-11-13 01:44:06,853 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 354 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2298.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.51ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 2626.74ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:06,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 32 Invalid, 808 Unknown, 0 Unchecked, 6.51ms Time], IncrementalHoareTripleChecker [58 Valid, 623 Invalid, 0 Unknown, 127 Unchecked, 2626.74ms Time] [2021-11-13 01:44:06,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2021-11-13 01:44:06,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 797. [2021-11-13 01:44:06,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 3.5477386934673367) internal successors, (2824), 796 states have internal predecessors, (2824), 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) [2021-11-13 01:44:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 2824 transitions. [2021-11-13 01:44:06,922 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 2824 transitions. Word has length 22 [2021-11-13 01:44:06,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:06,923 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 2824 transitions. [2021-11-13 01:44:06,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 2824 transitions. [2021-11-13 01:44:06,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:44:06,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:06,927 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] [2021-11-13 01:44:06,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:44:07,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:44:07,146 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:44:07,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:07,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1136845146, now seen corresponding path program 3 times [2021-11-13 01:44:07,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:44:07,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442181018] [2021-11-13 01:44:07,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 01:44:07,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:44:07,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:44:07,148 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:44:07,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:44:07,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-13 01:44:07,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:44:07,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:44:07,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:44:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:08,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:44:09,798 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:44:09,798 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 377 treesize of output 437 [2021-11-13 01:44:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:12,057 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:44:12,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442181018] [2021-11-13 01:44:12,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442181018] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:12,057 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:44:12,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-13 01:44:12,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400373483] [2021-11-13 01:44:12,057 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:12,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 01:44:12,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:44:12,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 01:44:12,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:44:12,059 INFO L87 Difference]: Start difference. First operand 797 states and 2824 transitions. Second operand has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:17,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:17,443 INFO L93 Difference]: Finished difference Result 2770 states and 9395 transitions. [2021-11-13 01:44:17,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-13 01:44:17,445 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:44:17,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:17,472 INFO L225 Difference]: With dead ends: 2770 [2021-11-13 01:44:17,472 INFO L226 Difference]: Without dead ends: 2695 [2021-11-13 01:44:17,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 01:44:17,481 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 498 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2396.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.48ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 2746.96ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:17,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 31 Invalid, 885 Unknown, 0 Unchecked, 7.48ms Time], IncrementalHoareTripleChecker [85 Valid, 656 Invalid, 0 Unknown, 144 Unchecked, 2746.96ms Time] [2021-11-13 01:44:17,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2021-11-13 01:44:17,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 819. [2021-11-13 01:44:17,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 3.6124694376528117) internal successors, (2955), 818 states have internal predecessors, (2955), 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) [2021-11-13 01:44:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2955 transitions. [2021-11-13 01:44:17,559 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2955 transitions. Word has length 22 [2021-11-13 01:44:17,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:17,559 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 2955 transitions. [2021-11-13 01:44:17,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:17,560 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2955 transitions. [2021-11-13 01:44:17,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:44:17,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:17,564 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] [2021-11-13 01:44:17,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:44:17,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:44:17,778 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:44:17,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:17,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1694014630, now seen corresponding path program 4 times [2021-11-13 01:44:17,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:44:17,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423927529] [2021-11-13 01:44:17,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 01:44:17,779 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:44:17,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:44:17,780 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:44:17,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:44:17,890 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 01:44:17,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:44:17,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:44:17,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:44:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:18,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:44:20,252 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:44:20,252 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 365 treesize of output 425 [2021-11-13 01:44:22,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:22,633 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:44:22,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423927529] [2021-11-13 01:44:22,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423927529] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:22,633 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:44:22,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 15 [2021-11-13 01:44:22,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799604996] [2021-11-13 01:44:22,634 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:22,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 01:44:22,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:44:22,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 01:44:22,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-13 01:44:22,635 INFO L87 Difference]: Start difference. First operand 819 states and 2955 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:28,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:28,075 INFO L93 Difference]: Finished difference Result 4650 states and 16705 transitions. [2021-11-13 01:44:28,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-13 01:44:28,076 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:44:28,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:28,120 INFO L225 Difference]: With dead ends: 4650 [2021-11-13 01:44:28,120 INFO L226 Difference]: Without dead ends: 4573 [2021-11-13 01:44:28,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=237, Invalid=755, Unknown=0, NotChecked=0, Total=992 [2021-11-13 01:44:28,122 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 760 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2432.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.42ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 2824.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:28,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 30 Invalid, 926 Unknown, 0 Unchecked, 7.42ms Time], IncrementalHoareTripleChecker [67 Valid, 725 Invalid, 0 Unknown, 134 Unchecked, 2824.00ms Time] [2021-11-13 01:44:28,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4573 states. [2021-11-13 01:44:28,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4573 to 1143. [2021-11-13 01:44:28,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 3.6742556917688267) internal successors, (4196), 1142 states have internal predecessors, (4196), 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) [2021-11-13 01:44:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 4196 transitions. [2021-11-13 01:44:28,241 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 4196 transitions. Word has length 22 [2021-11-13 01:44:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:28,242 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 4196 transitions. [2021-11-13 01:44:28,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:28,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 4196 transitions. [2021-11-13 01:44:28,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:44:28,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:28,248 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] [2021-11-13 01:44:28,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:44:28,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:44:28,460 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:44:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:28,461 INFO L85 PathProgramCache]: Analyzing trace with hash 252737426, now seen corresponding path program 5 times [2021-11-13 01:44:28,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:44:28,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215463604] [2021-11-13 01:44:28,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 01:44:28,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:44:28,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:44:28,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:44:28,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:44:28,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 01:44:28,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:44:28,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:44:28,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:44:29,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:29,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:44:31,542 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:44:31,543 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 377 treesize of output 437 [2021-11-13 01:44:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:33,866 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:44:33,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215463604] [2021-11-13 01:44:33,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215463604] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:33,867 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:44:33,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-13 01:44:33,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073566909] [2021-11-13 01:44:33,867 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:33,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 01:44:33,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:44:33,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 01:44:33,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:44:33,868 INFO L87 Difference]: Start difference. First operand 1143 states and 4196 transitions. Second operand has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:40,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:40,586 INFO L93 Difference]: Finished difference Result 3499 states and 12098 transitions. [2021-11-13 01:44:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-13 01:44:40,587 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:44:40,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:40,615 INFO L225 Difference]: With dead ends: 3499 [2021-11-13 01:44:40,616 INFO L226 Difference]: Without dead ends: 3485 [2021-11-13 01:44:40,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=309, Invalid=881, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 01:44:40,617 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 483 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2635.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.65ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 3023.49ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:40,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 34 Invalid, 1046 Unknown, 0 Unchecked, 6.65ms Time], IncrementalHoareTripleChecker [85 Valid, 744 Invalid, 0 Unknown, 217 Unchecked, 3023.49ms Time] [2021-11-13 01:44:40,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2021-11-13 01:44:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 1167. [2021-11-13 01:44:40,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 3.677530017152659) internal successors, (4288), 1166 states have internal predecessors, (4288), 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) [2021-11-13 01:44:40,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 4288 transitions. [2021-11-13 01:44:40,725 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 4288 transitions. Word has length 22 [2021-11-13 01:44:40,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:40,726 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 4288 transitions. [2021-11-13 01:44:40,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:40,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 4288 transitions. [2021-11-13 01:44:40,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:44:40,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:40,732 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] [2021-11-13 01:44:40,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:44:40,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:44:40,945 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:44:40,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:40,946 INFO L85 PathProgramCache]: Analyzing trace with hash -501676072, now seen corresponding path program 6 times [2021-11-13 01:44:40,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:44:40,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435688353] [2021-11-13 01:44:40,947 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 01:44:40,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:44:40,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:44:40,949 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:44:40,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:44:41,086 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-11-13 01:44:41,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:44:41,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 01:44:41,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:44:42,755 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-13 01:44:42,756 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 252 treesize of output 380 [2021-11-13 01:44:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:50,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:44:52,464 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:44:52,465 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 365 treesize of output 425 [2021-11-13 01:44:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:54,954 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:44:54,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435688353] [2021-11-13 01:44:54,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435688353] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:54,954 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:44:54,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-13 01:44:54,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823129456] [2021-11-13 01:44:54,954 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:54,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 01:44:54,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:44:54,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 01:44:54,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-13 01:44:54,956 INFO L87 Difference]: Start difference. First operand 1167 states and 4288 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:45:01,701 INFO L93 Difference]: Finished difference Result 2216 states and 7998 transitions. [2021-11-13 01:45:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:45:01,702 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:45:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:45:01,711 INFO L225 Difference]: With dead ends: 2216 [2021-11-13 01:45:01,712 INFO L226 Difference]: Without dead ends: 2207 [2021-11-13 01:45:01,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:45:01,713 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 305 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2573.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.18ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 2832.42ms IncrementalHoareTripleChecker+Time [2021-11-13 01:45:01,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 28 Invalid, 711 Unknown, 0 Unchecked, 4.18ms Time], IncrementalHoareTripleChecker [36 Valid, 533 Invalid, 0 Unknown, 142 Unchecked, 2832.42ms Time] [2021-11-13 01:45:01,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-13 01:45:01,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1143. [2021-11-13 01:45:01,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 3.6742556917688267) internal successors, (4196), 1142 states have internal predecessors, (4196), 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) [2021-11-13 01:45:01,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 4196 transitions. [2021-11-13 01:45:01,779 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 4196 transitions. Word has length 22 [2021-11-13 01:45:01,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:45:01,780 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 4196 transitions. [2021-11-13 01:45:01,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:01,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 4196 transitions. [2021-11-13 01:45:01,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:45:01,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:45:01,786 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] [2021-11-13 01:45:01,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:45:01,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:45:01,998 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:45:01,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:45:01,999 INFO L85 PathProgramCache]: Analyzing trace with hash 778569370, now seen corresponding path program 7 times [2021-11-13 01:45:01,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:45:01,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045877520] [2021-11-13 01:45:01,999 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 01:45:01,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:45:01,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:45:02,000 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:45:02,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:45:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:45:02,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:45:02,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:45:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:45:02,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:45:04,994 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:45:04,995 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 377 treesize of output 437 [2021-11-13 01:45:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:45:06,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:45:06,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045877520] [2021-11-13 01:45:06,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045877520] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:45:06,151 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:45:06,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-13 01:45:06,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756971964] [2021-11-13 01:45:06,152 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:45:06,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 01:45:06,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:45:06,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 01:45:06,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:45:06,153 INFO L87 Difference]: Start difference. First operand 1143 states and 4196 transitions. Second operand has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:45:13,287 INFO L93 Difference]: Finished difference Result 3664 states and 12778 transitions. [2021-11-13 01:45:13,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-13 01:45:13,288 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:45:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:45:13,320 INFO L225 Difference]: With dead ends: 3664 [2021-11-13 01:45:13,321 INFO L226 Difference]: Without dead ends: 3650 [2021-11-13 01:45:13,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=297, Invalid=759, Unknown=0, NotChecked=0, Total=1056 [2021-11-13 01:45:13,322 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 475 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3617.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.37ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 4046.02ms IncrementalHoareTripleChecker+Time [2021-11-13 01:45:13,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 40 Invalid, 1084 Unknown, 0 Unchecked, 6.37ms Time], IncrementalHoareTripleChecker [57 Valid, 849 Invalid, 0 Unknown, 178 Unchecked, 4046.02ms Time] [2021-11-13 01:45:13,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2021-11-13 01:45:13,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 1190. [2021-11-13 01:45:13,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1189 states have (on average 3.6568544995794787) internal successors, (4348), 1189 states have internal predecessors, (4348), 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) [2021-11-13 01:45:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 4348 transitions. [2021-11-13 01:45:13,405 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 4348 transitions. Word has length 22 [2021-11-13 01:45:13,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:45:13,406 INFO L470 AbstractCegarLoop]: Abstraction has 1190 states and 4348 transitions. [2021-11-13 01:45:13,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:13,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 4348 transitions. [2021-11-13 01:45:13,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:45:13,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:45:13,412 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] [2021-11-13 01:45:13,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:45:13,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:45:13,628 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:45:13,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:45:13,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1251943664, now seen corresponding path program 8 times [2021-11-13 01:45:13,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:45:13,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087438628] [2021-11-13 01:45:13,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:45:13,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:45:13,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:45:13,630 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:45:13,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:45:13,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 01:45:13,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:45:13,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:45:13,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:45:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:45:14,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:45:16,836 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:45:16,837 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 377 treesize of output 437 [2021-11-13 01:45:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:45:18,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:45:18,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087438628] [2021-11-13 01:45:18,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087438628] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:45:18,252 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:45:18,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-13 01:45:18,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370789327] [2021-11-13 01:45:18,253 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:45:18,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 01:45:18,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:45:18,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 01:45:18,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:45:18,254 INFO L87 Difference]: Start difference. First operand 1190 states and 4348 transitions. Second operand has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:26,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:45:26,286 INFO L93 Difference]: Finished difference Result 3595 states and 12553 transitions. [2021-11-13 01:45:26,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-13 01:45:26,287 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:45:26,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:45:26,303 INFO L225 Difference]: With dead ends: 3595 [2021-11-13 01:45:26,303 INFO L226 Difference]: Without dead ends: 3576 [2021-11-13 01:45:26,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=329, Invalid=931, Unknown=0, NotChecked=0, Total=1260 [2021-11-13 01:45:26,304 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 419 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3940.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.11ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 4417.77ms IncrementalHoareTripleChecker+Time [2021-11-13 01:45:26,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 43 Invalid, 1207 Unknown, 0 Unchecked, 7.11ms Time], IncrementalHoareTripleChecker [47 Valid, 942 Invalid, 0 Unknown, 218 Unchecked, 4417.77ms Time] [2021-11-13 01:45:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2021-11-13 01:45:26,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 1191. [2021-11-13 01:45:26,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1190 states have (on average 3.6554621848739495) internal successors, (4350), 1190 states have internal predecessors, (4350), 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) [2021-11-13 01:45:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 4350 transitions. [2021-11-13 01:45:26,386 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 4350 transitions. Word has length 22 [2021-11-13 01:45:26,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:45:26,387 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 4350 transitions. [2021-11-13 01:45:26,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 4350 transitions. [2021-11-13 01:45:26,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:45:26,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:45:26,393 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] [2021-11-13 01:45:26,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:45:26,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:45:26,608 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:45:26,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:45:26,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1661265818, now seen corresponding path program 9 times [2021-11-13 01:45:26,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:45:26,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441809866] [2021-11-13 01:45:26,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 01:45:26,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:45:26,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:45:26,610 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:45:26,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:45:26,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-13 01:45:26,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:45:26,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:45:26,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:45:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:45:27,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:45:29,602 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:45:29,602 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 377 treesize of output 437 [2021-11-13 01:45:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:45:31,000 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:45:31,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441809866] [2021-11-13 01:45:31,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441809866] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:45:31,001 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:45:31,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-13 01:45:31,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455558954] [2021-11-13 01:45:31,001 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:45:31,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 01:45:31,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:45:31,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 01:45:31,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:45:31,002 INFO L87 Difference]: Start difference. First operand 1191 states and 4350 transitions. Second operand has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:42,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:45:42,216 INFO L93 Difference]: Finished difference Result 3976 states and 13930 transitions. [2021-11-13 01:45:42,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-13 01:45:42,218 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:45:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:45:42,235 INFO L225 Difference]: With dead ends: 3976 [2021-11-13 01:45:42,235 INFO L226 Difference]: Without dead ends: 3918 [2021-11-13 01:45:42,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=458, Invalid=1434, Unknown=0, NotChecked=0, Total=1892 [2021-11-13 01:45:42,237 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 634 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5294.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.55ms SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 5839.91ms IncrementalHoareTripleChecker+Time [2021-11-13 01:45:42,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 39 Invalid, 1259 Unknown, 0 Unchecked, 8.55ms Time], IncrementalHoareTripleChecker [115 Valid, 973 Invalid, 0 Unknown, 171 Unchecked, 5839.91ms Time] [2021-11-13 01:45:42,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2021-11-13 01:45:42,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 1209. [2021-11-13 01:45:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1208 states have (on average 3.676324503311258) internal successors, (4441), 1208 states have internal predecessors, (4441), 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) [2021-11-13 01:45:42,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 4441 transitions. [2021-11-13 01:45:42,329 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 4441 transitions. Word has length 22 [2021-11-13 01:45:42,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:45:42,329 INFO L470 AbstractCegarLoop]: Abstraction has 1209 states and 4441 transitions. [2021-11-13 01:45:42,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 4441 transitions. [2021-11-13 01:45:42,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:45:42,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:45:42,334 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] [2021-11-13 01:45:42,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:45:42,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:45:42,548 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:45:42,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:45:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1982253658, now seen corresponding path program 10 times [2021-11-13 01:45:42,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:45:42,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552208957] [2021-11-13 01:45:42,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 01:45:42,549 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:45:42,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:45:42,552 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:45:42,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:45:42,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 01:45:42,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:45:42,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:45:42,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:45:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:45:43,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:45:45,606 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:45:45,607 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 377 treesize of output 437 [2021-11-13 01:45:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:45:46,872 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:45:46,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552208957] [2021-11-13 01:45:46,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552208957] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:45:46,873 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:45:46,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-13 01:45:46,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928998976] [2021-11-13 01:45:46,873 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:45:46,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 01:45:46,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:45:46,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 01:45:46,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:45:46,874 INFO L87 Difference]: Start difference. First operand 1209 states and 4441 transitions. Second operand has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:45:54,701 INFO L93 Difference]: Finished difference Result 5086 states and 17840 transitions. [2021-11-13 01:45:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-13 01:45:54,703 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:45:54,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:45:54,716 INFO L225 Difference]: With dead ends: 5086 [2021-11-13 01:45:54,716 INFO L226 Difference]: Without dead ends: 5023 [2021-11-13 01:45:54,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2021-11-13 01:45:54,717 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 835 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3665.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.35ms SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 387 IncrementalHoareTripleChecker+Unchecked, 4078.32ms IncrementalHoareTripleChecker+Time [2021-11-13 01:45:54,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 39 Invalid, 1323 Unknown, 0 Unchecked, 8.35ms Time], IncrementalHoareTripleChecker [141 Valid, 795 Invalid, 0 Unknown, 387 Unchecked, 4078.32ms Time] [2021-11-13 01:45:54,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2021-11-13 01:45:54,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 1273. [2021-11-13 01:45:54,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1272 states have (on average 3.6517295597484276) internal successors, (4645), 1272 states have internal predecessors, (4645), 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) [2021-11-13 01:45:54,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 4645 transitions. [2021-11-13 01:45:54,819 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 4645 transitions. Word has length 22 [2021-11-13 01:45:54,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:45:54,819 INFO L470 AbstractCegarLoop]: Abstraction has 1273 states and 4645 transitions. [2021-11-13 01:45:54,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:54,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 4645 transitions. [2021-11-13 01:45:54,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:45:54,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:45:54,824 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] [2021-11-13 01:45:54,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:45:55,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:45:55,037 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:45:55,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:45:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1321469874, now seen corresponding path program 11 times [2021-11-13 01:45:55,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:45:55,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910440535] [2021-11-13 01:45:55,039 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 01:45:55,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:45:55,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:45:55,040 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:45:55,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:45:55,158 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 01:45:55,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:45:55,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 01:45:55,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:45:56,458 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-13 01:45:56,458 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 229 treesize of output 357 [2021-11-13 01:46:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:46:08,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:46:10,814 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:46:10,815 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 365 treesize of output 425 [2021-11-13 01:46:12,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:46:12,123 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:46:12,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910440535] [2021-11-13 01:46:12,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910440535] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:46:12,124 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:46:12,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-13 01:46:12,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044622132] [2021-11-13 01:46:12,124 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:46:12,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 01:46:12,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:46:12,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 01:46:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-13 01:46:12,126 INFO L87 Difference]: Start difference. First operand 1273 states and 4645 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:46:18,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:46:18,760 INFO L93 Difference]: Finished difference Result 2930 states and 10733 transitions. [2021-11-13 01:46:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-13 01:46:18,761 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:46:18,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:46:18,767 INFO L225 Difference]: With dead ends: 2930 [2021-11-13 01:46:18,767 INFO L226 Difference]: Without dead ends: 2909 [2021-11-13 01:46:18,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=236, Invalid=634, Unknown=0, NotChecked=0, Total=870 [2021-11-13 01:46:18,769 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 321 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1752.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.49ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 456 IncrementalHoareTripleChecker+Unchecked, 2027.56ms IncrementalHoareTripleChecker+Time [2021-11-13 01:46:18,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 34 Invalid, 1098 Unknown, 0 Unchecked, 5.49ms Time], IncrementalHoareTripleChecker [38 Valid, 604 Invalid, 0 Unknown, 456 Unchecked, 2027.56ms Time] [2021-11-13 01:46:18,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2021-11-13 01:46:18,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 1300. [2021-11-13 01:46:18,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 3.6666666666666665) internal successors, (4763), 1299 states have internal predecessors, (4763), 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) [2021-11-13 01:46:18,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 4763 transitions. [2021-11-13 01:46:18,840 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 4763 transitions. Word has length 22 [2021-11-13 01:46:18,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:46:18,840 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 4763 transitions. [2021-11-13 01:46:18,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:46:18,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 4763 transitions. [2021-11-13 01:46:18,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:46:18,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:46:18,845 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] [2021-11-13 01:46:18,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:46:19,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:46:19,055 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:46:19,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:46:19,058 INFO L85 PathProgramCache]: Analyzing trace with hash -851494506, now seen corresponding path program 12 times [2021-11-13 01:46:19,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:46:19,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662992556] [2021-11-13 01:46:19,059 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 01:46:19,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:46:19,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:46:19,060 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:46:19,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 01:46:19,170 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-11-13 01:46:19,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:46:19,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 01:46:19,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:46:20,856 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-13 01:46:20,857 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 252 treesize of output 380 [2021-11-13 01:46:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:46:36,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:46:38,769 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:46:38,770 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 365 treesize of output 425 [2021-11-13 01:46:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:46:40,609 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:46:40,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662992556] [2021-11-13 01:46:40,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662992556] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:46:40,610 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:46:40,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-13 01:46:40,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663790687] [2021-11-13 01:46:40,610 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:46:40,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 01:46:40,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:46:40,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 01:46:40,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=183, Unknown=1, NotChecked=0, Total=240 [2021-11-13 01:46:40,611 INFO L87 Difference]: Start difference. First operand 1300 states and 4763 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:46:43,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:46:43,923 INFO L93 Difference]: Finished difference Result 2659 states and 9859 transitions. [2021-11-13 01:46:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:46:43,924 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:46:43,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:46:43,931 INFO L225 Difference]: With dead ends: 2659 [2021-11-13 01:46:43,931 INFO L226 Difference]: Without dead ends: 2627 [2021-11-13 01:46:43,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=93, Invalid=286, Unknown=1, NotChecked=0, Total=380 [2021-11-13 01:46:43,932 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 198 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1606.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.49ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 1856.96ms IncrementalHoareTripleChecker+Time [2021-11-13 01:46:43,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 33 Invalid, 634 Unknown, 0 Unchecked, 3.49ms Time], IncrementalHoareTripleChecker [17 Valid, 446 Invalid, 0 Unknown, 171 Unchecked, 1856.96ms Time] [2021-11-13 01:46:43,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2021-11-13 01:46:43,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 1321. [2021-11-13 01:46:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1320 states have (on average 3.668939393939394) internal successors, (4843), 1320 states have internal predecessors, (4843), 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) [2021-11-13 01:46:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 4843 transitions. [2021-11-13 01:46:43,992 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 4843 transitions. Word has length 22 [2021-11-13 01:46:43,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:46:43,993 INFO L470 AbstractCegarLoop]: Abstraction has 1321 states and 4843 transitions. [2021-11-13 01:46:43,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:46:43,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 4843 transitions. [2021-11-13 01:46:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:46:43,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:46:43,998 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] [2021-11-13 01:46:44,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:46:44,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:46:44,212 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:46:44,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:46:44,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2134963110, now seen corresponding path program 13 times [2021-11-13 01:46:44,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:46:44,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103717686] [2021-11-13 01:46:44,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 01:46:44,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:46:44,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:46:44,214 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:46:44,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 01:46:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:46:44,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:46:44,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:46:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:46:45,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:46:46,944 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:46:46,945 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 365 treesize of output 425 [2021-11-13 01:46:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:46:48,521 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:46:48,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103717686] [2021-11-13 01:46:48,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103717686] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:46:48,521 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:46:48,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 15 [2021-11-13 01:46:48,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20501745] [2021-11-13 01:46:48,521 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:46:48,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 01:46:48,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:46:48,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 01:46:48,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-13 01:46:48,522 INFO L87 Difference]: Start difference. First operand 1321 states and 4843 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:46:53,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:46:53,815 INFO L93 Difference]: Finished difference Result 4693 states and 16627 transitions. [2021-11-13 01:46:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-13 01:46:53,816 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:46:53,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:46:53,827 INFO L225 Difference]: With dead ends: 4693 [2021-11-13 01:46:53,827 INFO L226 Difference]: Without dead ends: 4655 [2021-11-13 01:46:53,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260 [2021-11-13 01:46:53,828 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 634 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2366.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.42ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 2731.69ms IncrementalHoareTripleChecker+Time [2021-11-13 01:46:53,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 27 Invalid, 932 Unknown, 0 Unchecked, 6.42ms Time], IncrementalHoareTripleChecker [70 Valid, 681 Invalid, 0 Unknown, 181 Unchecked, 2731.69ms Time] [2021-11-13 01:46:53,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4655 states. [2021-11-13 01:46:53,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4655 to 1460. [2021-11-13 01:46:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.702535983550377) internal successors, (5402), 1459 states have internal predecessors, (5402), 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) [2021-11-13 01:46:53,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5402 transitions. [2021-11-13 01:46:53,931 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5402 transitions. Word has length 22 [2021-11-13 01:46:53,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:46:53,931 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 5402 transitions. [2021-11-13 01:46:53,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:46:53,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5402 transitions. [2021-11-13 01:46:53,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:46:53,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:46:53,937 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] [2021-11-13 01:46:53,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:46:54,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:46:54,159 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:46:54,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:46:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1566134080, now seen corresponding path program 14 times [2021-11-13 01:46:54,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:46:54,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885570039] [2021-11-13 01:46:54,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:46:54,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:46:54,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:46:54,163 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:46:54,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 01:46:54,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 01:46:54,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:46:54,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:46:54,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:46:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:46:55,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:46:56,829 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:46:56,830 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 365 treesize of output 425 [2021-11-13 01:46:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:46:58,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:46:58,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885570039] [2021-11-13 01:46:58,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885570039] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:46:58,260 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:46:58,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 15 [2021-11-13 01:46:58,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215001963] [2021-11-13 01:46:58,261 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:46:58,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 01:46:58,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:46:58,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 01:46:58,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-13 01:46:58,262 INFO L87 Difference]: Start difference. First operand 1460 states and 5402 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:47:03,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:47:03,539 INFO L93 Difference]: Finished difference Result 4401 states and 15684 transitions. [2021-11-13 01:47:03,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-13 01:47:03,539 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:47:03,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:47:03,550 INFO L225 Difference]: With dead ends: 4401 [2021-11-13 01:47:03,550 INFO L226 Difference]: Without dead ends: 4356 [2021-11-13 01:47:03,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2021-11-13 01:47:03,570 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 575 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2854.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.34ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 3308.69ms IncrementalHoareTripleChecker+Time [2021-11-13 01:47:03,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 31 Invalid, 1041 Unknown, 0 Unchecked, 7.34ms Time], IncrementalHoareTripleChecker [56 Valid, 847 Invalid, 0 Unknown, 138 Unchecked, 3308.69ms Time] [2021-11-13 01:47:03,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2021-11-13 01:47:03,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 1406. [2021-11-13 01:47:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 3.698932384341637) internal successors, (5197), 1405 states have internal predecessors, (5197), 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) [2021-11-13 01:47:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 5197 transitions. [2021-11-13 01:47:03,651 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 5197 transitions. Word has length 22 [2021-11-13 01:47:03,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:47:03,651 INFO L470 AbstractCegarLoop]: Abstraction has 1406 states and 5197 transitions. [2021-11-13 01:47:03,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:47:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 5197 transitions. [2021-11-13 01:47:03,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 01:47:03,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:47:03,656 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] [2021-11-13 01:47:03,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 01:47:03,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:47:03,870 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:47:03,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:47:03,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1560882528, now seen corresponding path program 15 times [2021-11-13 01:47:03,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:47:03,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759348745] [2021-11-13 01:47:03,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 01:47:03,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:47:03,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:47:03,872 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:47:03,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 01:47:03,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-13 01:47:03,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:47:03,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:47:03,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:47:04,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:06,611 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:47:06,612 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 365 treesize of output 425 [2021-11-13 01:47:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:47:08,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:47:08,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759348745] [2021-11-13 01:47:08,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759348745] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:47:08,043 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:47:08,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 15 [2021-11-13 01:47:08,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496049994] [2021-11-13 01:47:08,043 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:47:08,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 01:47:08,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:47:08,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 01:47:08,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-13 01:47:08,045 INFO L87 Difference]: Start difference. First operand 1406 states and 5197 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:47:12,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:47:12,210 INFO L93 Difference]: Finished difference Result 4174 states and 14907 transitions. [2021-11-13 01:47:12,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 01:47:12,211 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-13 01:47:12,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:47:12,221 INFO L225 Difference]: With dead ends: 4174 [2021-11-13 01:47:12,222 INFO L226 Difference]: Without dead ends: 4118 [2021-11-13 01:47:12,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2021-11-13 01:47:12,223 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 404 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2396.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.38ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 2775.85ms IncrementalHoareTripleChecker+Time [2021-11-13 01:47:12,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 27 Invalid, 948 Unknown, 0 Unchecked, 6.38ms Time], IncrementalHoareTripleChecker [54 Valid, 849 Invalid, 0 Unknown, 45 Unchecked, 2775.85ms Time] [2021-11-13 01:47:12,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2021-11-13 01:47:12,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 1450. [2021-11-13 01:47:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1449 states have (on average 3.63216011042098) internal successors, (5263), 1449 states have internal predecessors, (5263), 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) [2021-11-13 01:47:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 5263 transitions. [2021-11-13 01:47:12,305 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 5263 transitions. Word has length 22 [2021-11-13 01:47:12,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:47:12,306 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 5263 transitions. [2021-11-13 01:47:12,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:47:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 5263 transitions. [2021-11-13 01:47:12,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-13 01:47:12,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:47:12,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:47:12,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 01:47:12,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:47:12,523 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:47:12,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:47:12,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1351162726, now seen corresponding path program 1 times [2021-11-13 01:47:12,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:47:12,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58053949] [2021-11-13 01:47:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:12,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:47:12,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:47:12,526 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:47:12,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 01:47:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:12,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 01:47:12,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:47:13,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:47:13,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:47:13,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58053949] [2021-11-13 01:47:13,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58053949] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:47:13,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1385908701] [2021-11-13 01:47:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:13,300 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:47:13,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:47:13,301 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:47:13,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-13 01:47:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:13,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 01:47:13,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:47:13,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:47:14,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1385908701] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:47:14,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552152326] [2021-11-13 01:47:14,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:14,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:47:14,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:47:14,025 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:47:14,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-13 01:47:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:14,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 01:47:14,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:47:14,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:47:14,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552152326] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:47:14,612 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:47:14,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 6, 6] total 23 [2021-11-13 01:47:14,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864371600] [2021-11-13 01:47:14,613 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:47:14,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-13 01:47:14,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:47:14,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-13 01:47:14,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-11-13 01:47:14,614 INFO L87 Difference]: Start difference. First operand 1450 states and 5263 transitions. Second operand has 24 states, 23 states have (on average 3.782608695652174) internal successors, (87), 24 states have internal predecessors, (87), 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) [2021-11-13 01:47:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:47:18,306 INFO L93 Difference]: Finished difference Result 4006 states and 14300 transitions. [2021-11-13 01:47:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-13 01:47:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.782608695652174) internal successors, (87), 24 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-13 01:47:18,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:47:18,316 INFO L225 Difference]: With dead ends: 4006 [2021-11-13 01:47:18,316 INFO L226 Difference]: Without dead ends: 3530 [2021-11-13 01:47:18,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=353, Invalid=1453, Unknown=0, NotChecked=0, Total=1806 [2021-11-13 01:47:18,317 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 456 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2139.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.07ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 647 IncrementalHoareTripleChecker+Unchecked, 2476.97ms IncrementalHoareTripleChecker+Time [2021-11-13 01:47:18,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 51 Invalid, 1643 Unknown, 0 Unchecked, 7.07ms Time], IncrementalHoareTripleChecker [44 Valid, 952 Invalid, 0 Unknown, 647 Unchecked, 2476.97ms Time] [2021-11-13 01:47:18,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3530 states. [2021-11-13 01:47:18,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3530 to 1867. [2021-11-13 01:47:18,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 3.609860664523044) internal successors, (6736), 1866 states have internal predecessors, (6736), 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) [2021-11-13 01:47:18,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 6736 transitions. [2021-11-13 01:47:18,370 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 6736 transitions. Word has length 23 [2021-11-13 01:47:18,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:47:18,370 INFO L470 AbstractCegarLoop]: Abstraction has 1867 states and 6736 transitions. [2021-11-13 01:47:18,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.782608695652174) internal successors, (87), 24 states have internal predecessors, (87), 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) [2021-11-13 01:47:18,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 6736 transitions. [2021-11-13 01:47:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 01:47:18,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:47:18,375 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] [2021-11-13 01:47:18,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-13 01:47:18,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 01:47:18,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-13 01:47:18,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:47:18,977 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:47:18,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:47:18,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1727072710, now seen corresponding path program 1 times [2021-11-13 01:47:18,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:47:18,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205094217] [2021-11-13 01:47:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:18,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:47:18,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:47:18,979 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:47:18,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 01:47:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:19,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 01:47:19,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:47:19,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:47:19,816 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:47:19,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205094217] [2021-11-13 01:47:19,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205094217] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:47:19,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1583727760] [2021-11-13 01:47:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:19,817 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:47:19,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:47:19,825 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:47:19,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-13 01:47:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:19,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:47:19,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:47:20,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:47:20,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1583727760] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:47:20,249 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:47:20,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 6] total 18 [2021-11-13 01:47:20,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496306801] [2021-11-13 01:47:20,250 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:47:20,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:47:20,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:47:20,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:47:20,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:47:20,251 INFO L87 Difference]: Start difference. First operand 1867 states and 6736 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-11-13 01:47:20,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:47:20,778 INFO L93 Difference]: Finished difference Result 2964 states and 10326 transitions. [2021-11-13 01:47:20,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:47:20,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-13 01:47:20,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:47:20,785 INFO L225 Difference]: With dead ends: 2964 [2021-11-13 01:47:20,785 INFO L226 Difference]: Without dead ends: 2914 [2021-11-13 01:47:20,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:47:20,787 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 83 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 405.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.07ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 474.70ms IncrementalHoareTripleChecker+Time [2021-11-13 01:47:20,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 6 Invalid, 189 Unknown, 0 Unchecked, 1.07ms Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 474.70ms Time] [2021-11-13 01:47:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2021-11-13 01:47:20,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1512. [2021-11-13 01:47:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 3.528127068166777) internal successors, (5331), 1511 states have internal predecessors, (5331), 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) [2021-11-13 01:47:20,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5331 transitions. [2021-11-13 01:47:20,842 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5331 transitions. Word has length 24 [2021-11-13 01:47:20,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:47:20,843 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 5331 transitions. [2021-11-13 01:47:20,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2021-11-13 01:47:20,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5331 transitions. [2021-11-13 01:47:20,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 01:47:20,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:47:20,846 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] [2021-11-13 01:47:20,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-13 01:47:21,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-13 01:47:21,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:47:21,247 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:47:21,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:47:21,247 INFO L85 PathProgramCache]: Analyzing trace with hash -2036111765, now seen corresponding path program 1 times [2021-11-13 01:47:21,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:47:21,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084144978] [2021-11-13 01:47:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:21,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:47:21,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:47:21,249 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:47:21,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 01:47:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:21,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:47:21,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:47:21,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:47:21,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:47:21,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084144978] [2021-11-13 01:47:21,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084144978] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:47:21,554 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:47:21,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 01:47:21,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571396222] [2021-11-13 01:47:21,554 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:47:21,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:47:21,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:47:21,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:47:21,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:47:21,555 INFO L87 Difference]: Start difference. First operand 1512 states and 5331 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 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) [2021-11-13 01:47:22,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:47:22,059 INFO L93 Difference]: Finished difference Result 1760 states and 5845 transitions. [2021-11-13 01:47:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:47:22,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-13 01:47:22,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:47:22,063 INFO L225 Difference]: With dead ends: 1760 [2021-11-13 01:47:22,063 INFO L226 Difference]: Without dead ends: 1521 [2021-11-13 01:47:22,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:47:22,064 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 72 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 418.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 490.86ms IncrementalHoareTripleChecker+Time [2021-11-13 01:47:22,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 7 Invalid, 203 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 490.86ms Time] [2021-11-13 01:47:22,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2021-11-13 01:47:22,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1385. [2021-11-13 01:47:22,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1384 states have (on average 3.4183526011560694) internal successors, (4731), 1384 states have internal predecessors, (4731), 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) [2021-11-13 01:47:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 4731 transitions. [2021-11-13 01:47:22,094 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 4731 transitions. Word has length 25 [2021-11-13 01:47:22,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:47:22,094 INFO L470 AbstractCegarLoop]: Abstraction has 1385 states and 4731 transitions. [2021-11-13 01:47:22,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 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) [2021-11-13 01:47:22,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 4731 transitions. [2021-11-13 01:47:22,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 01:47:22,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:47:22,097 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] [2021-11-13 01:47:22,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 01:47:22,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:47:22,298 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:47:22,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:47:22,298 INFO L85 PathProgramCache]: Analyzing trace with hash 684967773, now seen corresponding path program 1 times [2021-11-13 01:47:22,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:47:22,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126837982] [2021-11-13 01:47:22,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:22,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:47:22,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:47:22,299 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:47:22,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 01:47:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:22,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:47:22,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:22,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:47:22,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:47:22,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:47:22,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126837982] [2021-11-13 01:47:22,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126837982] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:47:22,682 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:47:22,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 01:47:22,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571286774] [2021-11-13 01:47:22,683 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:47:22,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:47:22,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:47:22,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:47:22,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:47:22,684 INFO L87 Difference]: Start difference. First operand 1385 states and 4731 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-11-13 01:47:23,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:47:23,163 INFO L93 Difference]: Finished difference Result 1253 states and 4250 transitions. [2021-11-13 01:47:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:47:23,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-13 01:47:23,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:47:23,166 INFO L225 Difference]: With dead ends: 1253 [2021-11-13 01:47:23,166 INFO L226 Difference]: Without dead ends: 1138 [2021-11-13 01:47:23,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:47:23,167 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 47 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 403.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.01ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 468.77ms IncrementalHoareTripleChecker+Time [2021-11-13 01:47:23,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 4 Invalid, 215 Unknown, 0 Unchecked, 1.01ms Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 468.77ms Time] [2021-11-13 01:47:23,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-11-13 01:47:23,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1132. [2021-11-13 01:47:23,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 1131 states have (on average 3.5278514588859418) internal successors, (3990), 1131 states have internal predecessors, (3990), 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) [2021-11-13 01:47:23,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 3990 transitions. [2021-11-13 01:47:23,190 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 3990 transitions. Word has length 25 [2021-11-13 01:47:23,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:47:23,190 INFO L470 AbstractCegarLoop]: Abstraction has 1132 states and 3990 transitions. [2021-11-13 01:47:23,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-11-13 01:47:23,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 3990 transitions. [2021-11-13 01:47:23,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 01:47:23,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:47:23,195 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] [2021-11-13 01:47:23,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-13 01:47:23,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:47:23,424 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:47:23,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:47:23,424 INFO L85 PathProgramCache]: Analyzing trace with hash -687017527, now seen corresponding path program 1 times [2021-11-13 01:47:23,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:47:23,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557252733] [2021-11-13 01:47:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:23,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:47:23,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:47:23,426 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:47:23,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 01:47:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:23,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 01:47:23,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:47:23,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:47:24,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:47:24,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557252733] [2021-11-13 01:47:24,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557252733] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:47:24,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1377181393] [2021-11-13 01:47:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:24,215 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:47:24,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:47:24,216 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:47:24,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-13 01:47:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:24,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 01:47:24,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:47:24,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:47:24,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1377181393] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:47:24,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794102187] [2021-11-13 01:47:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:24,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:47:24,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:47:24,983 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:47:24,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-13 01:47:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:25,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 01:47:25,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:47:25,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:47:25,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794102187] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:47:25,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-13 01:47:25,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6, 5, 5, 8] total 29 [2021-11-13 01:47:25,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749285601] [2021-11-13 01:47:25,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:47:25,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:47:25,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:47:25,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:47:25,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2021-11-13 01:47:25,891 INFO L87 Difference]: Start difference. First operand 1132 states and 3990 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-11-13 01:47:26,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:47:26,819 INFO L93 Difference]: Finished difference Result 1431 states and 5158 transitions. [2021-11-13 01:47:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:47:26,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-13 01:47:26,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:47:26,823 INFO L225 Difference]: With dead ends: 1431 [2021-11-13 01:47:26,823 INFO L226 Difference]: Without dead ends: 1379 [2021-11-13 01:47:26,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=182, Invalid=874, Unknown=0, NotChecked=0, Total=1056 [2021-11-13 01:47:26,824 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 55 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 676.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.47ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 794.99ms IncrementalHoareTripleChecker+Time [2021-11-13 01:47:26,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 12 Invalid, 276 Unknown, 0 Unchecked, 1.47ms Time], IncrementalHoareTripleChecker [6 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 794.99ms Time] [2021-11-13 01:47:26,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2021-11-13 01:47:26,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1099. [2021-11-13 01:47:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 3.569216757741348) internal successors, (3919), 1098 states have internal predecessors, (3919), 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) [2021-11-13 01:47:26,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 3919 transitions. [2021-11-13 01:47:26,849 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 3919 transitions. Word has length 25 [2021-11-13 01:47:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:47:26,849 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 3919 transitions. [2021-11-13 01:47:26,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-11-13 01:47:26,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 3919 transitions. [2021-11-13 01:47:26,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 01:47:26,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:47:26,852 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] [2021-11-13 01:47:26,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-13 01:47:27,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-13 01:47:27,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-13 01:47:27,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:47:27,453 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:47:27,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:47:27,453 INFO L85 PathProgramCache]: Analyzing trace with hash -482318088, now seen corresponding path program 1 times [2021-11-13 01:47:27,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:47:27,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245205891] [2021-11-13 01:47:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:27,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:47:27,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:47:27,454 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:47:27,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-13 01:47:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:27,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 01:47:27,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:47:28,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:47:28,307 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:47:28,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245205891] [2021-11-13 01:47:28,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245205891] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:47:28,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [456339416] [2021-11-13 01:47:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:28,307 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:47:28,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:47:28,308 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:47:28,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-13 01:47:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:28,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:47:28,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:47:28,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:47:28,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [456339416] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:47:28,762 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:47:28,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 17 [2021-11-13 01:47:28,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496064284] [2021-11-13 01:47:28,762 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:47:28,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:47:28,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:47:28,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:47:28,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:47:28,763 INFO L87 Difference]: Start difference. First operand 1099 states and 3919 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-11-13 01:47:29,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:47:29,290 INFO L93 Difference]: Finished difference Result 1051 states and 3525 transitions. [2021-11-13 01:47:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:47:29,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-13 01:47:29,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:47:29,292 INFO L225 Difference]: With dead ends: 1051 [2021-11-13 01:47:29,293 INFO L226 Difference]: Without dead ends: 789 [2021-11-13 01:47:29,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:47:29,293 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 34 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 444.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 517.54ms IncrementalHoareTripleChecker+Time [2021-11-13 01:47:29,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 8 Invalid, 222 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 517.54ms Time] [2021-11-13 01:47:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-11-13 01:47:29,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 789. [2021-11-13 01:47:29,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 788 states have (on average 3.478426395939086) internal successors, (2741), 788 states have internal predecessors, (2741), 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) [2021-11-13 01:47:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 2741 transitions. [2021-11-13 01:47:29,311 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 2741 transitions. Word has length 25 [2021-11-13 01:47:29,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:47:29,311 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 2741 transitions. [2021-11-13 01:47:29,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-11-13 01:47:29,311 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 2741 transitions. [2021-11-13 01:47:29,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 01:47:29,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:47:29,314 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] [2021-11-13 01:47:29,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-11-13 01:47:29,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-13 01:47:29,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:47:29,718 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:47:29,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:47:29,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1588112810, now seen corresponding path program 1 times [2021-11-13 01:47:29,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:47:29,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500080982] [2021-11-13 01:47:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:29,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:47:29,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:47:29,720 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:47:29,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-13 01:47:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:29,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-13 01:47:29,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:31,401 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-13 01:47:31,401 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 229 treesize of output 357 [2021-11-13 01:47:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:47:36,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:38,845 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:47:38,846 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 377 treesize of output 437 [2021-11-13 01:47:41,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 01:47:41,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:47:41,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500080982] [2021-11-13 01:47:41,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500080982] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:47:41,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:47:41,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 15 [2021-11-13 01:47:41,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97974316] [2021-11-13 01:47:41,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:47:41,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:47:41,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:47:41,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:47:41,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=192, Unknown=1, NotChecked=0, Total=240 [2021-11-13 01:47:41,623 INFO L87 Difference]: Start difference. First operand 789 states and 2741 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:47:44,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:47:44,532 INFO L93 Difference]: Finished difference Result 1858 states and 6526 transitions. [2021-11-13 01:47:44,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 01:47:44,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-13 01:47:44,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:47:44,537 INFO L225 Difference]: With dead ends: 1858 [2021-11-13 01:47:44,537 INFO L226 Difference]: Without dead ends: 1851 [2021-11-13 01:47:44,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=75, Invalid=304, Unknown=1, NotChecked=0, Total=380 [2021-11-13 01:47:44,539 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 98 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1560.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.31ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1795.10ms IncrementalHoareTripleChecker+Time [2021-11-13 01:47:44,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 0 Invalid, 376 Unknown, 0 Unchecked, 2.31ms Time], IncrementalHoareTripleChecker [17 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 1795.10ms Time] [2021-11-13 01:47:44,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2021-11-13 01:47:44,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 837. [2021-11-13 01:47:44,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 3.4665071770334928) internal successors, (2898), 836 states have internal predecessors, (2898), 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) [2021-11-13 01:47:44,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2898 transitions. [2021-11-13 01:47:44,564 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2898 transitions. Word has length 26 [2021-11-13 01:47:44,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:47:44,565 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 2898 transitions. [2021-11-13 01:47:44,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:47:44,565 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2898 transitions. [2021-11-13 01:47:44,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 01:47:44,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:47:44,567 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] [2021-11-13 01:47:44,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-13 01:47:44,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:47:44,767 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:47:44,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:47:44,768 INFO L85 PathProgramCache]: Analyzing trace with hash -858482096, now seen corresponding path program 2 times [2021-11-13 01:47:44,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:47:44,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476966875] [2021-11-13 01:47:44,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:47:44,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:47:44,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:47:44,769 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:47:44,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-13 01:47:44,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 01:47:44,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:47:44,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 01:47:44,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 01:47:45,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:47,539 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:47:47,540 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 365 treesize of output 425 [2021-11-13 01:47:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 01:47:49,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:47:49,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476966875] [2021-11-13 01:47:49,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476966875] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:47:49,798 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:47:49,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 15 [2021-11-13 01:47:49,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662576539] [2021-11-13 01:47:49,799 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:47:49,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 01:47:49,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:47:49,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 01:47:49,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-11-13 01:47:49,799 INFO L87 Difference]: Start difference. First operand 837 states and 2898 transitions. Second operand has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 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) [2021-11-13 01:47:51,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:47:51,544 INFO L93 Difference]: Finished difference Result 1366 states and 4431 transitions. [2021-11-13 01:47:51,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 01:47:51,545 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 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 26 [2021-11-13 01:47:51,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:47:51,547 INFO L225 Difference]: With dead ends: 1366 [2021-11-13 01:47:51,548 INFO L226 Difference]: Without dead ends: 1353 [2021-11-13 01:47:51,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-13 01:47:51,549 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 212 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1093.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.73ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 1265.60ms IncrementalHoareTripleChecker+Time [2021-11-13 01:47:51,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 18 Invalid, 457 Unknown, 0 Unchecked, 2.73ms Time], IncrementalHoareTripleChecker [12 Valid, 381 Invalid, 0 Unknown, 64 Unchecked, 1265.60ms Time] [2021-11-13 01:47:51,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2021-11-13 01:47:51,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 847. [2021-11-13 01:47:51,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 3.4562647754137115) internal successors, (2924), 846 states have internal predecessors, (2924), 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) [2021-11-13 01:47:51,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 2924 transitions. [2021-11-13 01:47:51,580 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 2924 transitions. Word has length 26 [2021-11-13 01:47:51,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:47:51,580 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 2924 transitions. [2021-11-13 01:47:51,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 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) [2021-11-13 01:47:51,581 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 2924 transitions. [2021-11-13 01:47:51,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 01:47:51,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:47:51,584 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] [2021-11-13 01:47:51,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-11-13 01:47:51,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:47:51,809 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:47:51,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:47:51,809 INFO L85 PathProgramCache]: Analyzing trace with hash -651371382, now seen corresponding path program 3 times [2021-11-13 01:47:51,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:47:51,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117182766] [2021-11-13 01:47:51,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 01:47:51,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:47:51,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:47:51,810 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:47:51,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-13 01:47:51,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 01:47:51,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:47:52,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-13 01:47:52,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:47:53,635 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-13 01:47:53,635 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 229 treesize of output 357 [2021-11-13 01:47:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:47:55,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:47:57,465 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:47:57,465 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 365 treesize of output 425 [2021-11-13 01:48:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:48:00,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:48:00,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117182766] [2021-11-13 01:48:00,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117182766] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:48:00,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [824930698] [2021-11-13 01:48:00,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 01:48:00,259 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:48:00,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:48:00,260 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:48:00,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-13 01:48:00,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 01:48:00,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:48:00,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-13 01:48:00,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:48:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:48:01,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:48:03,612 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:48:03,613 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 365 treesize of output 425 [2021-11-13 01:48:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:48:06,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [824930698] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:48:06,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512024206] [2021-11-13 01:48:06,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 01:48:06,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:48:06,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:48:06,259 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:48:06,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-13 01:48:06,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 01:48:06,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:48:06,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:48:06,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:48:08,411 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-13 01:48:08,412 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 219 treesize of output 347 [2021-11-13 01:48:16,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:48:16,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:48:18,695 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:48:18,696 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 365 treesize of output 425 [2021-11-13 01:48:21,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:48:21,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512024206] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:48:21,924 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:48:21,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 9, 7, 10, 8] total 44 [2021-11-13 01:48:21,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337411096] [2021-11-13 01:48:21,924 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:48:21,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-13 01:48:21,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:48:21,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-13 01:48:21,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1750, Unknown=1, NotChecked=0, Total=1980 [2021-11-13 01:48:21,926 INFO L87 Difference]: Start difference. First operand 847 states and 2924 transitions. Second operand has 45 states, 44 states have (on average 3.159090909090909) internal successors, (139), 45 states have internal predecessors, (139), 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) [2021-11-13 01:49:11,187 WARN L227 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 101 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 01:49:44,590 WARN L227 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 108 DAG size of output: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 01:51:13,370 WARN L227 SmtUtils]: Spent 13.14s on a formula simplification. DAG size of input: 146 DAG size of output: 107 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 01:53:03,695 WARN L227 SmtUtils]: Spent 11.08s on a formula simplification. DAG size of input: 103 DAG size of output: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 01:54:28,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:54:28,413 INFO L93 Difference]: Finished difference Result 14652 states and 47985 transitions. [2021-11-13 01:54:28,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 358 states. [2021-11-13 01:54:28,415 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 3.159090909090909) internal successors, (139), 45 states have internal predecessors, (139), 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 26 [2021-11-13 01:54:28,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:54:28,459 INFO L225 Difference]: With dead ends: 14652 [2021-11-13 01:54:28,459 INFO L226 Difference]: Without dead ends: 13157 [2021-11-13 01:54:28,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 183 SyntacticMatches, 68 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 79989 ImplicationChecksByTransitivity, 342.0s TimeCoverageRelationStatistics Valid=23788, Invalid=127117, Unknown=27, NotChecked=0, Total=150932 [2021-11-13 01:54:28,483 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 4004 mSDsluCounter, 8576 mSDsCounter, 0 mSdLazyCounter, 6991 mSolverCounterSat, 976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28857.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4004 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 19055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.37ms SdHoareTripleChecker+Time, 976 IncrementalHoareTripleChecker+Valid, 6991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11088 IncrementalHoareTripleChecker+Unchecked, 33321.97ms IncrementalHoareTripleChecker+Time [2021-11-13 01:54:28,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4004 Valid, 82 Invalid, 19055 Unknown, 0 Unchecked, 87.37ms Time], IncrementalHoareTripleChecker [976 Valid, 6991 Invalid, 0 Unknown, 11088 Unchecked, 33321.97ms Time] [2021-11-13 01:54:28,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13157 states. [2021-11-13 01:54:28,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13157 to 1936. [2021-11-13 01:54:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1936 states, 1935 states have (on average 3.7162790697674417) internal successors, (7191), 1935 states have internal predecessors, (7191), 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) [2021-11-13 01:54:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 7191 transitions. [2021-11-13 01:54:28,672 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 7191 transitions. Word has length 26 [2021-11-13 01:54:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:54:28,673 INFO L470 AbstractCegarLoop]: Abstraction has 1936 states and 7191 transitions. [2021-11-13 01:54:28,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 3.159090909090909) internal successors, (139), 45 states have internal predecessors, (139), 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) [2021-11-13 01:54:28,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 7191 transitions. [2021-11-13 01:54:28,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 01:54:28,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:54:28,679 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] [2021-11-13 01:54:28,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2021-11-13 01:54:28,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-13 01:54:29,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-13 01:54:29,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:54:29,284 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:54:29,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:54:29,284 INFO L85 PathProgramCache]: Analyzing trace with hash 925175593, now seen corresponding path program 1 times [2021-11-13 01:54:29,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:54:29,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960119123] [2021-11-13 01:54:29,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:54:29,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:54:29,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:54:29,290 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:54:29,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-13 01:54:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:54:29,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-13 01:54:29,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:54:30,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:54:30,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:54:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:54:30,731 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:54:30,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960119123] [2021-11-13 01:54:30,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960119123] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:54:30,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1957502460] [2021-11-13 01:54:30,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:54:30,732 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:54:30,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:54:30,736 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:54:30,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-13 01:54:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:54:31,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 01:54:31,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:54:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:54:31,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:54:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:54:31,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1957502460] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:54:31,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094057947] [2021-11-13 01:54:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:54:31,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:54:31,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:54:31,745 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:54:31,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-13 01:54:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:54:31,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 01:54:31,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:54:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:54:32,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:54:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:54:32,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094057947] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:54:32,924 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:54:32,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 9, 8] total 25 [2021-11-13 01:54:32,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240795637] [2021-11-13 01:54:32,924 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:54:32,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-13 01:54:32,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:54:32,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-13 01:54:32,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:54:32,926 INFO L87 Difference]: Start difference. First operand 1936 states and 7191 transitions. Second operand has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 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) [2021-11-13 01:54:37,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:54:37,263 INFO L93 Difference]: Finished difference Result 7479 states and 26610 transitions. [2021-11-13 01:54:37,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-13 01:54:37,264 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-13 01:54:37,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:54:37,286 INFO L225 Difference]: With dead ends: 7479 [2021-11-13 01:54:37,286 INFO L226 Difference]: Without dead ends: 7479 [2021-11-13 01:54:37,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=418, Invalid=988, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 01:54:37,287 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 782 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2905.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.70ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3346.67ms IncrementalHoareTripleChecker+Time [2021-11-13 01:54:37,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 0 Invalid, 1123 Unknown, 0 Unchecked, 7.70ms Time], IncrementalHoareTripleChecker [56 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 3346.67ms Time] [2021-11-13 01:54:37,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7479 states. [2021-11-13 01:54:37,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7479 to 2025. [2021-11-13 01:54:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2025 states, 2024 states have (on average 3.694169960474308) internal successors, (7477), 2024 states have internal predecessors, (7477), 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) [2021-11-13 01:54:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 7477 transitions. [2021-11-13 01:54:37,414 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 7477 transitions. Word has length 27 [2021-11-13 01:54:37,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:54:37,415 INFO L470 AbstractCegarLoop]: Abstraction has 2025 states and 7477 transitions. [2021-11-13 01:54:37,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 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) [2021-11-13 01:54:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 7477 transitions. [2021-11-13 01:54:37,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 01:54:37,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:54:37,420 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] [2021-11-13 01:54:37,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-13 01:54:37,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-13 01:54:37,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2021-11-13 01:54:38,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:54:38,023 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:54:38,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:54:38,023 INFO L85 PathProgramCache]: Analyzing trace with hash 278004678, now seen corresponding path program 1 times [2021-11-13 01:54:38,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:54:38,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902617442] [2021-11-13 01:54:38,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:54:38,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:54:38,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:54:38,024 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:54:38,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-13 01:54:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:54:38,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:54:38,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:54:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:54:39,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:54:41,550 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:54:41,551 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 365 treesize of output 425 [2021-11-13 01:54:47,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:54:47,643 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:54:47,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902617442] [2021-11-13 01:54:47,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902617442] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:54:47,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [561311110] [2021-11-13 01:54:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:54:47,643 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:54:47,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:54:47,644 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:54:47,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2021-11-13 01:54:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:54:47,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-13 01:54:47,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:54:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:54:49,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:54:50,927 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:54:50,927 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 365 treesize of output 425 [2021-11-13 01:54:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:54:55,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [561311110] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:54:55,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919029224] [2021-11-13 01:54:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:54:55,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:54:55,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:54:55,167 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:54:55,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-13 01:54:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:54:55,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:54:55,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:54:56,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:54:56,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:54:58,187 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:54:58,187 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 365 treesize of output 425 [2021-11-13 01:55:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:55:01,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919029224] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:55:01,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-13 01:55:01,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 9, 9, 9, 10] total 32 [2021-11-13 01:55:01,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615730313] [2021-11-13 01:55:01,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:55:01,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:55:01,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:55:01,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:55:01,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=889, Unknown=0, NotChecked=0, Total=1056 [2021-11-13 01:55:01,651 INFO L87 Difference]: Start difference. First operand 2025 states and 7477 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:55:08,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:55:08,098 INFO L93 Difference]: Finished difference Result 2486 states and 9024 transitions. [2021-11-13 01:55:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:55:08,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-13 01:55:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:55:08,105 INFO L225 Difference]: With dead ends: 2486 [2021-11-13 01:55:08,105 INFO L226 Difference]: Without dead ends: 2391 [2021-11-13 01:55:08,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=252, Invalid=1470, Unknown=0, NotChecked=0, Total=1722 [2021-11-13 01:55:08,106 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 195 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2253.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.62ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2561.70ms IncrementalHoareTripleChecker+Time [2021-11-13 01:55:08,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 0 Invalid, 513 Unknown, 0 Unchecked, 3.62ms Time], IncrementalHoareTripleChecker [18 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 2561.70ms Time] [2021-11-13 01:55:08,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-11-13 01:55:08,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2069. [2021-11-13 01:55:08,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2068 states have (on average 3.6881044487427466) internal successors, (7627), 2068 states have internal predecessors, (7627), 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) [2021-11-13 01:55:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 7627 transitions. [2021-11-13 01:55:08,152 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 7627 transitions. Word has length 27 [2021-11-13 01:55:08,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:55:08,152 INFO L470 AbstractCegarLoop]: Abstraction has 2069 states and 7627 transitions. [2021-11-13 01:55:08,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:55:08,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 7627 transitions. [2021-11-13 01:55:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 01:55:08,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:55:08,157 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] [2021-11-13 01:55:08,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-13 01:55:08,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-11-13 01:55:08,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2021-11-13 01:55:08,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:55:08,758 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:55:08,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:55:08,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1701695436, now seen corresponding path program 2 times [2021-11-13 01:55:08,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:55:08,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549644081] [2021-11-13 01:55:08,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:55:08,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:55:08,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:55:08,760 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:55:08,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-13 01:55:08,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 01:55:08,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:55:08,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:55:08,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:55:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:55:10,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:55:12,311 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:55:12,312 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 365 treesize of output 425 [2021-11-13 01:55:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:55:16,433 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:55:16,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549644081] [2021-11-13 01:55:16,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549644081] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:55:16,434 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:55:16,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 19 [2021-11-13 01:55:16,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875076718] [2021-11-13 01:55:16,434 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:55:16,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 01:55:16,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:55:16,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 01:55:16,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:55:16,436 INFO L87 Difference]: Start difference. First operand 2069 states and 7627 transitions. Second operand has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 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) [2021-11-13 01:55:34,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:55:34,155 INFO L93 Difference]: Finished difference Result 3576 states and 12225 transitions. [2021-11-13 01:55:34,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-13 01:55:34,156 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-13 01:55:34,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:55:34,163 INFO L225 Difference]: With dead ends: 3576 [2021-11-13 01:55:34,163 INFO L226 Difference]: Without dead ends: 3129 [2021-11-13 01:55:34,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=859, Invalid=2563, Unknown=0, NotChecked=0, Total=3422 [2021-11-13 01:55:34,164 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 770 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4475.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.37ms SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 5125.26ms IncrementalHoareTripleChecker+Time [2021-11-13 01:55:34,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 0 Invalid, 1292 Unknown, 0 Unchecked, 9.37ms Time], IncrementalHoareTripleChecker [137 Valid, 1018 Invalid, 0 Unknown, 137 Unchecked, 5125.26ms Time] [2021-11-13 01:55:34,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2021-11-13 01:55:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 2011. [2021-11-13 01:55:34,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 2010 states have (on average 3.6776119402985072) internal successors, (7392), 2010 states have internal predecessors, (7392), 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) [2021-11-13 01:55:34,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 7392 transitions. [2021-11-13 01:55:34,254 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 7392 transitions. Word has length 27 [2021-11-13 01:55:34,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:55:34,255 INFO L470 AbstractCegarLoop]: Abstraction has 2011 states and 7392 transitions. [2021-11-13 01:55:34,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 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) [2021-11-13 01:55:34,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 7392 transitions. [2021-11-13 01:55:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 01:55:34,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:55:34,261 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] [2021-11-13 01:55:34,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-13 01:55:34,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:55:34,475 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:55:34,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:55:34,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1199655202, now seen corresponding path program 3 times [2021-11-13 01:55:34,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:55:34,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537746608] [2021-11-13 01:55:34,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 01:55:34,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:55:34,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:55:34,477 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:55:34,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-13 01:55:34,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-13 01:55:34,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:55:34,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:55:34,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:55:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:55:35,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:55:37,965 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:55:37,967 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 365 treesize of output 425 [2021-11-13 01:55:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:55:41,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:55:41,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537746608] [2021-11-13 01:55:41,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537746608] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:55:41,498 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:55:41,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 19 [2021-11-13 01:55:41,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970885055] [2021-11-13 01:55:41,498 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:55:41,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 01:55:41,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:55:41,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 01:55:41,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:55:41,499 INFO L87 Difference]: Start difference. First operand 2011 states and 7392 transitions. Second operand has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 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) [2021-11-13 01:55:58,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:55:58,117 INFO L93 Difference]: Finished difference Result 5446 states and 18192 transitions. [2021-11-13 01:55:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-13 01:55:58,118 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-13 01:55:58,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:55:58,128 INFO L225 Difference]: With dead ends: 5446 [2021-11-13 01:55:58,129 INFO L226 Difference]: Without dead ends: 5100 [2021-11-13 01:55:58,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=697, Invalid=2165, Unknown=0, NotChecked=0, Total=2862 [2021-11-13 01:55:58,129 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 717 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5302.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.80ms SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 6092.60ms IncrementalHoareTripleChecker+Time [2021-11-13 01:55:58,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 0 Invalid, 1541 Unknown, 0 Unchecked, 10.80ms Time], IncrementalHoareTripleChecker [97 Valid, 1380 Invalid, 0 Unknown, 64 Unchecked, 6092.60ms Time] [2021-11-13 01:55:58,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5100 states. [2021-11-13 01:55:58,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5100 to 2019. [2021-11-13 01:55:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2018 states have (on average 3.688305252725471) internal successors, (7443), 2018 states have internal predecessors, (7443), 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) [2021-11-13 01:55:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 7443 transitions. [2021-11-13 01:55:58,227 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 7443 transitions. Word has length 27 [2021-11-13 01:55:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:55:58,227 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 7443 transitions. [2021-11-13 01:55:58,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 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) [2021-11-13 01:55:58,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 7443 transitions. [2021-11-13 01:55:58,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 01:55:58,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:55:58,232 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] [2021-11-13 01:55:58,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-13 01:55:58,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:55:58,433 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:55:58,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:55:58,434 INFO L85 PathProgramCache]: Analyzing trace with hash 146898590, now seen corresponding path program 4 times [2021-11-13 01:55:58,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:55:58,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034823370] [2021-11-13 01:55:58,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 01:55:58,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:55:58,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:55:58,435 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:55:58,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-13 01:55:58,682 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 01:55:58,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:55:58,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:55:58,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:55:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:55:59,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:56:02,090 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:56:02,091 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 365 treesize of output 425 [2021-11-13 01:56:06,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:56:06,094 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:56:06,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034823370] [2021-11-13 01:56:06,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034823370] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:56:06,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [533827938] [2021-11-13 01:56:06,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 01:56:06,094 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:56:06,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:56:06,095 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:56:06,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2021-11-13 01:56:06,273 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 01:56:06,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:56:06,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-13 01:56:06,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:56:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:56:07,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:56:09,332 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:56:09,332 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 365 treesize of output 425 [2021-11-13 01:56:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:56:12,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [533827938] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:56:12,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154102647] [2021-11-13 01:56:12,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 01:56:12,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:56:12,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:56:12,205 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:56:12,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-13 01:56:12,301 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 01:56:12,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:56:12,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 01:56:12,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:56:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:56:13,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:56:16,092 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-13 01:56:16,092 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 365 treesize of output 425 [2021-11-13 01:56:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:56:20,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154102647] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:56:20,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-13 01:56:20,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 9, 9, 9, 11] total 33 [2021-11-13 01:56:20,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044177378] [2021-11-13 01:56:20,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:56:20,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:56:20,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:56:20,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:56:20,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 01:56:20,328 INFO L87 Difference]: Start difference. First operand 2019 states and 7443 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:56:30,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:56:30,467 INFO L93 Difference]: Finished difference Result 4873 states and 17565 transitions. [2021-11-13 01:56:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:56:30,469 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-13 01:56:30,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:56:30,482 INFO L225 Difference]: With dead ends: 4873 [2021-11-13 01:56:30,482 INFO L226 Difference]: Without dead ends: 4775 [2021-11-13 01:56:30,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=314, Invalid=1666, Unknown=0, NotChecked=0, Total=1980 [2021-11-13 01:56:30,483 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 271 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2736.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.57ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3143.64ms IncrementalHoareTripleChecker+Time [2021-11-13 01:56:30,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 6 Invalid, 460 Unknown, 0 Unchecked, 3.57ms Time], IncrementalHoareTripleChecker [31 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 3143.64ms Time] [2021-11-13 01:56:30,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2021-11-13 01:56:30,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 2019. [2021-11-13 01:56:30,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2018 states have (on average 3.687314172447968) internal successors, (7441), 2018 states have internal predecessors, (7441), 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) [2021-11-13 01:56:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 7441 transitions. [2021-11-13 01:56:30,594 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 7441 transitions. Word has length 27 [2021-11-13 01:56:30,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:56:30,595 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 7441 transitions. [2021-11-13 01:56:30,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:56:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 7441 transitions. [2021-11-13 01:56:30,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 01:56:30,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:56:30,602 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] [2021-11-13 01:56:30,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-13 01:56:30,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-13 01:56:31,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2021-11-13 01:56:31,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:56:31,223 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 01:56:31,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:56:31,223 INFO L85 PathProgramCache]: Analyzing trace with hash -222451836, now seen corresponding path program 5 times [2021-11-13 01:56:31,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:56:31,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060385218] [2021-11-13 01:56:31,224 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 01:56:31,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:56:31,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:56:31,225 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:56:31,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0a53fa-68bc-47ce-84b0-164a00f0cdbc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-13 01:56:31,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 01:56:31,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:56:31,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:56:31,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:56:33,744 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-13 01:56:33,745 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 218 treesize of output 346