./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs --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 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:50:37,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:50:37,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:50:37,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:50:37,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:50:37,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:50:37,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:50:37,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:50:37,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:50:37,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:50:37,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:50:37,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:50:37,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:50:37,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:50:37,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:50:37,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:50:37,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:50:37,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:50:37,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:50:37,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:50:37,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:50:37,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:50:37,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:50:37,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:50:37,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:50:37,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:50:37,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:50:37,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:50:37,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:50:37,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:50:37,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:50:37,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:50:37,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:50:37,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:50:37,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:50:37,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:50:37,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:50:37,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:50:37,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:50:37,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:50:37,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:50:37,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:50:37,437 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:50:37,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:50:37,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:50:37,439 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:50:37,439 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:50:37,439 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:50:37,440 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:50:37,440 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:50:37,440 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:50:37,440 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:50:37,441 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:50:37,441 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:50:37,441 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:50:37,441 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:50:37,442 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:50:37,442 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:50:37,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:50:37,443 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:50:37,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:50:37,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:50:37,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:50:37,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:50:37,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:50:37,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:50:37,445 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:50:37,445 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:50:37,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:50:37,445 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:50:37,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:50:37,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:50:37,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:50:37,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:50:37,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:50:37,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:50:37,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:50:37,447 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:50:37,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:50:37,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:50:37,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:50:37,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:50:37,448 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_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 [2021-11-19 15:50:37,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:50:37,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:50:37,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:50:37,790 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:50:37,791 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:50:37,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2021-11-19 15:50:37,866 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/data/3bde73e7a/01dbaaa9882947699a3a1137dee52115/FLAGea8a253e2 [2021-11-19 15:50:38,402 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:50:38,403 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2021-11-19 15:50:38,412 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/data/3bde73e7a/01dbaaa9882947699a3a1137dee52115/FLAGea8a253e2 [2021-11-19 15:50:38,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/data/3bde73e7a/01dbaaa9882947699a3a1137dee52115 [2021-11-19 15:50:38,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:50:38,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:50:38,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:38,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:50:38,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:50:38,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:38" (1/1) ... [2021-11-19 15:50:38,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6501a2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:38, skipping insertion in model container [2021-11-19 15:50:38,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:38" (1/1) ... [2021-11-19 15:50:38,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:50:38,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:50:39,064 WARN L230 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_4ac257b6-4678-4f92-bc14-82f227d2f28a/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2021-11-19 15:50:39,073 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:39,084 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) [2021-11-19 15:50:39,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31efbd94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:39, skipping insertion in model container [2021-11-19 15:50:39,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:39,085 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:50:39,088 INFO L158 Benchmark]: Toolchain (without parser) took 343.00ms. Allocated memory is still 90.2MB. Free memory was 52.2MB in the beginning and 67.6MB in the end (delta: -15.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 15:50:39,089 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 90.2MB. Free memory was 68.5MB in the beginning and 68.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:50:39,090 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.94ms. Allocated memory is still 90.2MB. Free memory was 52.0MB in the beginning and 67.6MB in the end (delta: -15.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 15:50:39,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 90.2MB. Free memory was 68.5MB in the beginning and 68.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.94ms. Allocated memory is still 90.2MB. Free memory was 52.0MB in the beginning and 67.6MB in the end (delta: -15.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 111]: 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_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs --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 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:50:41,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:50:41,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:50:41,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:50:41,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:50:41,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:50:41,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:50:41,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:50:41,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:50:41,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:50:41,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:50:41,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:50:41,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:50:41,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:50:41,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:50:41,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:50:41,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:50:41,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:50:41,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:50:41,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:50:41,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:50:41,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:50:41,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:50:41,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:50:41,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:50:41,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:50:41,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:50:41,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:50:41,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:50:41,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:50:41,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:50:41,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:50:41,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:50:41,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:50:41,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:50:41,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:50:41,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:50:41,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:50:41,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:50:41,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:50:41,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:50:41,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 15:50:41,950 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:50:41,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:50:41,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:50:41,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:50:41,953 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:50:41,953 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:50:41,954 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:50:41,954 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:50:41,954 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:50:41,954 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:50:41,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:50:41,957 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:50:41,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:50:41,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:50:41,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:50:41,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:50:41,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:50:41,959 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:50:41,959 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:50:41,959 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:50:41,960 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:50:41,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:50:41,960 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:50:41,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:50:41,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:50:41,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:50:41,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:50:41,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:50:41,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:50:41,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:50:41,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:50:41,963 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:50:41,963 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:41,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:50:41,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:50:41,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:50:41,964 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_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 [2021-11-19 15:50:42,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:50:42,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:50:42,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:50:42,436 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:50:42,439 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:50:42,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2021-11-19 15:50:42,529 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/data/13cbb19b0/152ee1038cf145a680c7d9c7c8a2c0ef/FLAG9fb3fed8a [2021-11-19 15:50:43,202 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:50:43,203 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2021-11-19 15:50:43,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/data/13cbb19b0/152ee1038cf145a680c7d9c7c8a2c0ef/FLAG9fb3fed8a [2021-11-19 15:50:43,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/data/13cbb19b0/152ee1038cf145a680c7d9c7c8a2c0ef [2021-11-19 15:50:43,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:50:43,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:50:43,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:43,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:50:43,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:50:43,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:43" (1/1) ... [2021-11-19 15:50:43,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b4d27be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:43, skipping insertion in model container [2021-11-19 15:50:43,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:43" (1/1) ... [2021-11-19 15:50:43,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:50:43,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:50:43,770 WARN L230 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_4ac257b6-4678-4f92-bc14-82f227d2f28a/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2021-11-19 15:50:43,805 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:43,844 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:50:43,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:50:43,867 WARN L230 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_4ac257b6-4678-4f92-bc14-82f227d2f28a/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2021-11-19 15:50:43,872 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:43,878 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:50:43,908 WARN L230 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_4ac257b6-4678-4f92-bc14-82f227d2f28a/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2021-11-19 15:50:43,912 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:43,932 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:50:43,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:43 WrapperNode [2021-11-19 15:50:43,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:43,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:50:43,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:50:43,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:50:43,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:43" (1/1) ... [2021-11-19 15:50:43,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:43" (1/1) ... [2021-11-19 15:50:43,984 INFO L137 Inliner]: procedures = 28, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 149 [2021-11-19 15:50:43,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:50:43,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:50:43,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:50:43,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:50:43,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:43" (1/1) ... [2021-11-19 15:50:43,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:43" (1/1) ... [2021-11-19 15:50:44,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:43" (1/1) ... [2021-11-19 15:50:44,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:43" (1/1) ... [2021-11-19 15:50:44,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:43" (1/1) ... [2021-11-19 15:50:44,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:43" (1/1) ... [2021-11-19 15:50:44,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:43" (1/1) ... [2021-11-19 15:50:44,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:50:44,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:50:44,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:50:44,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:50:44,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:43" (1/1) ... [2021-11-19 15:50:44,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:50:44,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:50:44,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:50:44,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:50:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:50:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:50:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:50:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:50:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-19 15:50:44,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-19 15:50:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-19 15:50:44,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-19 15:50:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-19 15:50:44,141 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-19 15:50:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-19 15:50:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-19 15:50:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:50:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:50:44,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:50:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:50:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:50:44,144 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 15:50:44,311 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:50:44,313 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:50:44,889 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:50:45,012 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:50:45,012 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-19 15:50:45,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:50:45 BoogieIcfgContainer [2021-11-19 15:50:45,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:50:45,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:50:45,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:50:45,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:50:45,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:50:43" (1/3) ... [2021-11-19 15:50:45,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c496bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:50:45, skipping insertion in model container [2021-11-19 15:50:45,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:43" (2/3) ... [2021-11-19 15:50:45,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c496bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:50:45, skipping insertion in model container [2021-11-19 15:50:45,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:50:45" (3/3) ... [2021-11-19 15:50:45,030 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2021-11-19 15:50:45,036 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 15:50:45,036 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:50:45,036 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:50:45,036 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 15:50:45,086 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,087 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,087 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,087 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,088 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,088 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,088 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,088 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,089 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,090 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,090 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,090 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,090 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,091 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,091 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,091 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,091 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,092 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,093 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,093 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,094 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,095 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,095 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,095 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,095 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,096 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,096 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,096 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,096 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,097 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,097 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,097 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,097 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,098 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,099 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,099 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,099 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,100 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,100 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,101 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,101 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,105 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,105 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,106 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,106 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,116 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,116 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,116 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,117 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,118 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,118 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,118 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,118 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,119 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,119 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,119 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,119 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,119 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,119 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,120 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,120 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,120 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,120 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,120 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,121 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,121 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,121 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,121 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,121 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,121 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,122 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,122 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,122 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,126 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,127 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,127 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,129 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,129 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,129 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,129 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,129 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,130 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:50:45,132 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-19 15:50:45,182 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:50:45,190 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 [2021-11-19 15:50:45,190 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 15:50:45,210 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 15:50:45,230 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 227 transitions, 478 flow [2021-11-19 15:50:45,239 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 227 transitions, 478 flow [2021-11-19 15:50:45,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 217 places, 227 transitions, 478 flow [2021-11-19 15:50:45,387 INFO L129 PetriNetUnfolder]: 20/224 cut-off events. [2021-11-19 15:50:45,388 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-19 15:50:45,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 224 events. 20/224 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 153 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 183. Up to 3 conditions per place. [2021-11-19 15:50:45,404 INFO L116 LiptonReduction]: Number of co-enabled transitions 1874 [2021-11-19 15:51:13,744 INFO L131 LiptonReduction]: Checked pairs total: 2514 [2021-11-19 15:51:13,744 INFO L133 LiptonReduction]: Total number of compositions: 239 [2021-11-19 15:51:13,765 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 35 transitions, 94 flow [2021-11-19 15:51:13,807 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 167 states, 166 states have (on average 3.3373493975903616) internal successors, (554), 166 states have internal predecessors, (554), 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) [2021-11-19 15:51:13,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 166 states have (on average 3.3373493975903616) internal successors, (554), 166 states have internal predecessors, (554), 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) [2021-11-19 15:51:13,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 15:51:13,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:13,836 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] [2021-11-19 15:51:13,837 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 15:51:13,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:13,845 INFO L85 PathProgramCache]: Analyzing trace with hash -607397032, now seen corresponding path program 1 times [2021-11-19 15:51:13,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:13,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832243974] [2021-11-19 15:51:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:13,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:13,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:13,872 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:13,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:51:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:14,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:51:14,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:14,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:14,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:14,767 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:14,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832243974] [2021-11-19 15:51:14,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832243974] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:14,769 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:14,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-19 15:51:14,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392984487] [2021-11-19 15:51:14,771 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:14,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:51:14,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:14,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:51:14,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:51:14,821 INFO L87 Difference]: Start difference. First operand has 167 states, 166 states have (on average 3.3373493975903616) internal successors, (554), 166 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:15,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:15,285 INFO L93 Difference]: Finished difference Result 282 states and 944 transitions. [2021-11-19 15:51:15,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:51:15,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-19 15:51:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:15,319 INFO L225 Difference]: With dead ends: 282 [2021-11-19 15:51:15,319 INFO L226 Difference]: Without dead ends: 267 [2021-11-19 15:51:15,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:51:15,324 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:15,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 6 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 15:51:15,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-19 15:51:15,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 241. [2021-11-19 15:51:15,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 3.3958333333333335) internal successors, (815), 240 states have internal predecessors, (815), 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) [2021-11-19 15:51:15,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 815 transitions. [2021-11-19 15:51:15,435 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 815 transitions. Word has length 22 [2021-11-19 15:51:15,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:15,437 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 815 transitions. [2021-11-19 15:51:15,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:51:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 815 transitions. [2021-11-19 15:51:15,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 15:51:15,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:15,450 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] [2021-11-19 15:51:15,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:15,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:15,674 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 15:51:15,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:15,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1680649960, now seen corresponding path program 1 times [2021-11-19 15:51:15,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:15,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040269275] [2021-11-19 15:51:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:15,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:15,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:15,678 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:15,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:51:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:15,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:51:15,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:16,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:16,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:16,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040269275] [2021-11-19 15:51:16,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040269275] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:16,190 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:16,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 15:51:16,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774425738] [2021-11-19 15:51:16,191 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:16,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:51:16,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:16,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:51:16,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:51:16,194 INFO L87 Difference]: Start difference. First operand 241 states and 815 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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) [2021-11-19 15:51:17,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:17,713 INFO L93 Difference]: Finished difference Result 421 states and 1414 transitions. [2021-11-19 15:51:17,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:51:17,714 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 [2021-11-19 15:51:17,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:17,720 INFO L225 Difference]: With dead ends: 421 [2021-11-19 15:51:17,720 INFO L226 Difference]: Without dead ends: 409 [2021-11-19 15:51:17,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=168, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:51:17,722 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 154 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:17,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 33 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 15:51:17,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-11-19 15:51:17,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 253. [2021-11-19 15:51:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 3.4007936507936507) internal successors, (857), 252 states have internal predecessors, (857), 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) [2021-11-19 15:51:17,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 857 transitions. [2021-11-19 15:51:17,776 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 857 transitions. Word has length 24 [2021-11-19 15:51:17,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:17,778 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 857 transitions. [2021-11-19 15:51:17,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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) [2021-11-19 15:51:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 857 transitions. [2021-11-19 15:51:17,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 15:51:17,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:17,787 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] [2021-11-19 15:51:17,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:18,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:18,005 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 15:51:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:18,006 INFO L85 PathProgramCache]: Analyzing trace with hash 809947449, now seen corresponding path program 1 times [2021-11-19 15:51:18,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:18,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111767762] [2021-11-19 15:51:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:18,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:18,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:18,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:18,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:51:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:18,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:51:18,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:18,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:18,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:18,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111767762] [2021-11-19 15:51:18,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111767762] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:18,343 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:18,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:51:18,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110582449] [2021-11-19 15:51:18,343 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:18,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:51:18,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:18,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:51:18,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:51:18,345 INFO L87 Difference]: Start difference. First operand 253 states and 857 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 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) [2021-11-19 15:51:19,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:19,271 INFO L93 Difference]: Finished difference Result 647 states and 2198 transitions. [2021-11-19 15:51:19,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:51:19,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 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 [2021-11-19 15:51:19,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:19,279 INFO L225 Difference]: With dead ends: 647 [2021-11-19 15:51:19,279 INFO L226 Difference]: Without dead ends: 545 [2021-11-19 15:51:19,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:51:19,284 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 75 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:19,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 25 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 15:51:19,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-11-19 15:51:19,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 319. [2021-11-19 15:51:19,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 3.358490566037736) internal successors, (1068), 318 states have internal predecessors, (1068), 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) [2021-11-19 15:51:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 1068 transitions. [2021-11-19 15:51:19,323 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 1068 transitions. Word has length 24 [2021-11-19 15:51:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:19,323 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 1068 transitions. [2021-11-19 15:51:19,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 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) [2021-11-19 15:51:19,324 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 1068 transitions. [2021-11-19 15:51:19,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 15:51:19,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:19,326 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] [2021-11-19 15:51:19,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:19,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:19,539 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 15:51:19,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:19,539 INFO L85 PathProgramCache]: Analyzing trace with hash -714350288, now seen corresponding path program 2 times [2021-11-19 15:51:19,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:19,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633388609] [2021-11-19 15:51:19,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:51:19,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:19,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:19,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:19,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:51:19,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:51:19,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:51:19,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:51:19,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:19,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:20,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:20,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633388609] [2021-11-19 15:51:20,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633388609] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:20,039 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:20,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 15:51:20,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476413520] [2021-11-19 15:51:20,039 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:20,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:51:20,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:20,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:51:20,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:51:20,041 INFO L87 Difference]: Start difference. First operand 319 states and 1068 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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) [2021-11-19 15:51:20,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:20,819 INFO L93 Difference]: Finished difference Result 381 states and 1252 transitions. [2021-11-19 15:51:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 15:51:20,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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 [2021-11-19 15:51:20,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:20,824 INFO L225 Difference]: With dead ends: 381 [2021-11-19 15:51:20,824 INFO L226 Difference]: Without dead ends: 367 [2021-11-19 15:51:20,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:51:20,826 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 99 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:20,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 29 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 15:51:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-11-19 15:51:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 317. [2021-11-19 15:51:20,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 3.3607594936708862) internal successors, (1062), 316 states have internal predecessors, (1062), 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) [2021-11-19 15:51:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 1062 transitions. [2021-11-19 15:51:20,847 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 1062 transitions. Word has length 24 [2021-11-19 15:51:20,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:20,848 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 1062 transitions. [2021-11-19 15:51:20,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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) [2021-11-19 15:51:20,848 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 1062 transitions. [2021-11-19 15:51:20,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 15:51:20,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:20,854 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] [2021-11-19 15:51:20,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:21,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:21,068 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 15:51:21,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:21,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1114811654, now seen corresponding path program 3 times [2021-11-19 15:51:21,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:21,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089122838] [2021-11-19 15:51:21,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:51:21,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:21,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:21,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:21,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:51:21,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 15:51:21,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:51:21,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 15:51:21,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:21,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:21,819 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:21,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089122838] [2021-11-19 15:51:21,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089122838] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:21,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [87026864] [2021-11-19 15:51:21,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:51:21,820 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:21,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:21,827 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:21,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-19 15:51:22,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 15:51:22,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:51:22,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:51:22,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:22,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:22,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [87026864] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:51:22,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:51:22,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7, 5] total 16 [2021-11-19 15:51:22,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134562961] [2021-11-19 15:51:22,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:22,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:51:22,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:22,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:51:22,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:51:22,635 INFO L87 Difference]: Start difference. First operand 317 states and 1062 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-19 15:51:23,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:23,312 INFO L93 Difference]: Finished difference Result 593 states and 1944 transitions. [2021-11-19 15:51:23,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:51:23,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 [2021-11-19 15:51:23,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:23,320 INFO L225 Difference]: With dead ends: 593 [2021-11-19 15:51:23,320 INFO L226 Difference]: Without dead ends: 577 [2021-11-19 15:51:23,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:51:23,322 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 60 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:23,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 16 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 15:51:23,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-11-19 15:51:23,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 331. [2021-11-19 15:51:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 3.360606060606061) internal successors, (1109), 330 states have internal predecessors, (1109), 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) [2021-11-19 15:51:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 1109 transitions. [2021-11-19 15:51:23,347 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 1109 transitions. Word has length 24 [2021-11-19 15:51:23,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:23,348 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 1109 transitions. [2021-11-19 15:51:23,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-19 15:51:23,348 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 1109 transitions. [2021-11-19 15:51:23,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 15:51:23,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:23,351 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] [2021-11-19 15:51:23,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:23,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-19 15:51:23,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:23,775 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 15:51:23,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:23,775 INFO L85 PathProgramCache]: Analyzing trace with hash 704725712, now seen corresponding path program 4 times [2021-11-19 15:51:23,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:23,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967235256] [2021-11-19 15:51:23,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 15:51:23,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:23,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:23,778 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:23,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:51:23,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 15:51:23,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:51:23,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:51:23,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:24,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:24,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:24,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967235256] [2021-11-19 15:51:24,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967235256] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:24,233 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:51:24,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 15:51:24,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413022118] [2021-11-19 15:51:24,234 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:24,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:51:24,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:24,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:51:24,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:51:24,235 INFO L87 Difference]: Start difference. First operand 331 states and 1109 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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) [2021-11-19 15:51:25,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:25,906 INFO L93 Difference]: Finished difference Result 571 states and 1897 transitions. [2021-11-19 15:51:25,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 15:51:25,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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 [2021-11-19 15:51:25,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:25,920 INFO L225 Difference]: With dead ends: 571 [2021-11-19 15:51:25,920 INFO L226 Difference]: Without dead ends: 545 [2021-11-19 15:51:25,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:51:25,922 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 161 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:25,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 27 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 15:51:25,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-11-19 15:51:25,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 327. [2021-11-19 15:51:25,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 3.315950920245399) internal successors, (1081), 326 states have internal predecessors, (1081), 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) [2021-11-19 15:51:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 1081 transitions. [2021-11-19 15:51:25,948 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 1081 transitions. Word has length 24 [2021-11-19 15:51:25,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:25,948 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 1081 transitions. [2021-11-19 15:51:25,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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) [2021-11-19 15:51:25,949 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 1081 transitions. [2021-11-19 15:51:25,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 15:51:25,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:25,951 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] [2021-11-19 15:51:25,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:26,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:26,166 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 15:51:26,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:26,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2010270266, now seen corresponding path program 5 times [2021-11-19 15:51:26,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:26,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860301451] [2021-11-19 15:51:26,168 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 15:51:26,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:26,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:26,169 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:26,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:51:26,290 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:51:26,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:51:26,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 15:51:26,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:26,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:26,824 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:26,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860301451] [2021-11-19 15:51:26,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860301451] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:26,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1750303201] [2021-11-19 15:51:26,824 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 15:51:26,824 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:26,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:26,825 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:26,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 15:51:26,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:51:26,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:51:26,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:51:26,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:27,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:27,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1750303201] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:27,206 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:51:27,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7] total 18 [2021-11-19 15:51:27,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763630137] [2021-11-19 15:51:27,206 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:27,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:51:27,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:27,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:51:27,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:51:27,208 INFO L87 Difference]: Start difference. First operand 327 states and 1081 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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) [2021-11-19 15:51:27,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:27,780 INFO L93 Difference]: Finished difference Result 521 states and 1658 transitions. [2021-11-19 15:51:27,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:51:27,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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 24 [2021-11-19 15:51:27,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:27,787 INFO L225 Difference]: With dead ends: 521 [2021-11-19 15:51:27,787 INFO L226 Difference]: Without dead ends: 509 [2021-11-19 15:51:27,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:51:27,789 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 88 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:27,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 16 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 15:51:27,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-11-19 15:51:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 423. [2021-11-19 15:51:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 3.3056872037914693) internal successors, (1395), 422 states have internal predecessors, (1395), 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) [2021-11-19 15:51:27,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1395 transitions. [2021-11-19 15:51:27,812 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1395 transitions. Word has length 24 [2021-11-19 15:51:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:27,812 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 1395 transitions. [2021-11-19 15:51:27,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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) [2021-11-19 15:51:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1395 transitions. [2021-11-19 15:51:27,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 15:51:27,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:27,815 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] [2021-11-19 15:51:27,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-19 15:51:28,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:28,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:28,230 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 15:51:28,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1719909588, now seen corresponding path program 1 times [2021-11-19 15:51:28,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:28,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212196017] [2021-11-19 15:51:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:28,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:28,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:28,232 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:28,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:51:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:28,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 15:51:28,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:51:28,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:51:28,779 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:28,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212196017] [2021-11-19 15:51:28,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212196017] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:51:28,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:51:28,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2021-11-19 15:51:28,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784151515] [2021-11-19 15:51:28,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:28,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:51:28,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:28,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:51:28,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:51:28,781 INFO L87 Difference]: Start difference. First operand 423 states and 1395 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 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) [2021-11-19 15:51:29,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:29,179 INFO L93 Difference]: Finished difference Result 387 states and 1218 transitions. [2021-11-19 15:51:29,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:51:29,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 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 [2021-11-19 15:51:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:29,184 INFO L225 Difference]: With dead ends: 387 [2021-11-19 15:51:29,184 INFO L226 Difference]: Without dead ends: 330 [2021-11-19 15:51:29,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:51:29,185 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:29,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 13 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:51:29,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-19 15:51:29,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2021-11-19 15:51:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 3.2948328267477205) internal successors, (1084), 329 states have internal predecessors, (1084), 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) [2021-11-19 15:51:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1084 transitions. [2021-11-19 15:51:29,204 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1084 transitions. Word has length 25 [2021-11-19 15:51:29,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:29,204 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 1084 transitions. [2021-11-19 15:51:29,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 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) [2021-11-19 15:51:29,205 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1084 transitions. [2021-11-19 15:51:29,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 15:51:29,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:29,207 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] [2021-11-19 15:51:29,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-19 15:51:29,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:29,422 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 15:51:29,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:29,422 INFO L85 PathProgramCache]: Analyzing trace with hash -460031741, now seen corresponding path program 1 times [2021-11-19 15:51:29,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:29,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16168625] [2021-11-19 15:51:29,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:29,423 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:29,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:29,424 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:29,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:51:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:29,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 15:51:29,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:29,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 15:51:29,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:30,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 15:51:30,011 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:30,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16168625] [2021-11-19 15:51:30,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16168625] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:30,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [210880496] [2021-11-19 15:51:30,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:30,011 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:30,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:30,012 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:30,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 15:51:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:30,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:51:30,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 15:51:30,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 15:51:30,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [210880496] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:30,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041168301] [2021-11-19 15:51:30,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:30,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:51:30,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:51:30,742 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:51:30,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-19 15:51:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:30,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:51:30,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 15:51:31,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 15:51:31,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041168301] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:31,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:51:31,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5, 5, 7, 7] total 25 [2021-11-19 15:51:31,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606735674] [2021-11-19 15:51:31,215 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:51:31,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 15:51:31,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:31,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 15:51:31,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2021-11-19 15:51:31,217 INFO L87 Difference]: Start difference. First operand 330 states and 1084 transitions. Second operand has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 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) [2021-11-19 15:51:36,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:36,062 INFO L93 Difference]: Finished difference Result 1554 states and 5068 transitions. [2021-11-19 15:51:36,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-19 15:51:36,063 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 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 [2021-11-19 15:51:36,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:36,077 INFO L225 Difference]: With dead ends: 1554 [2021-11-19 15:51:36,077 INFO L226 Difference]: Without dead ends: 1420 [2021-11-19 15:51:36,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=816, Invalid=2490, Unknown=0, NotChecked=0, Total=3306 [2021-11-19 15:51:36,079 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 769 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:36,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 87 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-19 15:51:36,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-11-19 15:51:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 524. [2021-11-19 15:51:36,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 3.5908221797323137) internal successors, (1878), 523 states have internal predecessors, (1878), 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) [2021-11-19 15:51:36,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1878 transitions. [2021-11-19 15:51:36,120 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1878 transitions. Word has length 27 [2021-11-19 15:51:36,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:36,120 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1878 transitions. [2021-11-19 15:51:36,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 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) [2021-11-19 15:51:36,121 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1878 transitions. [2021-11-19 15:51:36,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 15:51:36,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:36,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:36,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:36,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:36,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-19 15:51:36,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:36,738 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 15:51:36,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:36,739 INFO L85 PathProgramCache]: Analyzing trace with hash -302414693, now seen corresponding path program 1 times [2021-11-19 15:51:36,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:36,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026147196] [2021-11-19 15:51:36,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:36,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:36,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:36,746 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:36,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac257b6-4678-4f92-bc14-82f227d2f28a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:51:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:37,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 15:51:37,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:37,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:37,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:37,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:51:37,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:37,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:51:37,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:51:37,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:51:38,247 INFO L354 Elim1Store]: treesize reduction 216, result has 35.9 percent of original size [2021-11-19 15:51:38,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 265 treesize of output 233 [2021-11-19 15:54:00,944 INFO L354 Elim1Store]: treesize reduction 32, result has 67.0 percent of original size [2021-11-19 15:54:00,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 252 treesize of output 252 [2021-11-19 15:54:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 15:54:21,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:54:51,807 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:54:51,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1616 treesize of output 1361 [2021-11-19 15:54:52,873 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-19 15:54:52,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1336 treesize of output 926 [2021-11-19 15:54:53,466 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-19 15:54:53,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 926 treesize of output 515 [2021-11-19 15:54:54,600 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-19 15:54:54,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 15409725442 treesize of output 15183233026