./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8 --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 8d4416b38cd75f122474354d64a020f92e3751959548582c6308a6e879679f77 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:05:41,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:05:41,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:05:41,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:05:41,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:05:41,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:05:41,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:05:41,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:05:41,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:05:41,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:05:41,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:05:41,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:05:41,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:05:41,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:05:41,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:05:41,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:05:41,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:05:41,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:05:41,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:05:41,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:05:41,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:05:41,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:05:41,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:05:41,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:05:41,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:05:41,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:05:41,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:05:41,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:05:41,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:05:41,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:05:41,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:05:41,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:05:41,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:05:41,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:05:41,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:05:41,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:05:41,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:05:41,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:05:41,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:05:41,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:05:41,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:05:41,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:05:41,458 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:05:41,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:05:41,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:05:41,460 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:05:41,460 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:05:41,460 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:05:41,460 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:05:41,461 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:05:41,461 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:05:41,461 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:05:41,461 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:05:41,462 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:05:41,462 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:05:41,462 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:05:41,462 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:05:41,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:05:41,463 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:05:41,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:05:41,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:05:41,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:05:41,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:05:41,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:05:41,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:05:41,465 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:05:41,465 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:05:41,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:05:41,466 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:05:41,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:05:41,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:05:41,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:05:41,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:41,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:05:41,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:05:41,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:05:41,468 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:05:41,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:05:41,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:05:41,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:05:41,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:05:41,469 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_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d4416b38cd75f122474354d64a020f92e3751959548582c6308a6e879679f77 [2021-11-07 01:05:41,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:05:41,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:05:41,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:05:41,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:05:41,753 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:05:41,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i [2021-11-07 01:05:41,817 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/data/0e84f0e24/7a8be2aca12b4df39586768c36564969/FLAG559a9673d [2021-11-07 01:05:42,437 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:05:42,437 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i [2021-11-07 01:05:42,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/data/0e84f0e24/7a8be2aca12b4df39586768c36564969/FLAG559a9673d [2021-11-07 01:05:42,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/data/0e84f0e24/7a8be2aca12b4df39586768c36564969 [2021-11-07 01:05:42,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:05:42,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:05:42,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:42,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:05:42,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:05:42,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:42" (1/1) ... [2021-11-07 01:05:42,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7d86cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:42, skipping insertion in model container [2021-11-07 01:05:42,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:42" (1/1) ... [2021-11-07 01:05:42,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:05:42,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:05:43,177 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i[33021,33034] [2021-11-07 01:05:43,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:43,384 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) [2021-11-07 01:05:43,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1dc04b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:43, skipping insertion in model container [2021-11-07 01:05:43,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:43,386 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:05:43,389 INFO L168 Benchmark]: Toolchain (without parser) took 705.31 ms. Allocated memory is still 107.0 MB. Free memory was 71.5 MB in the beginning and 70.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:05:43,390 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 107.0 MB. Free memory is still 63.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:05:43,392 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.13 ms. Allocated memory is still 107.0 MB. Free memory was 71.2 MB in the beginning and 70.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:05:43,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 107.0 MB. Free memory is still 63.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 696.13 ms. Allocated memory is still 107.0 MB. Free memory was 71.2 MB in the beginning and 70.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8 --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 8d4416b38cd75f122474354d64a020f92e3751959548582c6308a6e879679f77 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:05:45,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:05:45,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:05:45,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:05:45,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:05:45,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:05:45,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:05:45,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:05:45,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:05:45,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:05:45,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:05:45,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:05:45,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:05:45,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:05:45,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:05:45,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:05:45,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:05:45,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:05:45,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:05:45,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:05:45,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:05:45,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:05:45,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:05:45,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:05:45,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:05:45,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:05:45,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:05:45,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:05:45,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:05:45,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:05:45,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:05:45,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:05:45,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:05:45,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:05:45,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:05:45,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:05:45,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:05:45,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:05:45,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:05:45,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:05:45,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:05:45,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:05:45,854 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:05:45,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:05:45,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:05:45,855 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:05:45,856 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:05:45,856 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:05:45,856 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:05:45,856 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:05:45,857 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:05:45,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:05:45,858 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:05:45,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:05:45,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:05:45,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:05:45,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:05:45,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:05:45,860 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:05:45,860 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:05:45,860 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:05:45,860 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:05:45,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:05:45,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:05:45,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:05:45,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:05:45,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:05:45,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:05:45,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:45,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:05:45,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:05:45,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:05:45,863 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:05:45,863 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:45,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:05:45,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:05:45,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:05:45,864 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_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d4416b38cd75f122474354d64a020f92e3751959548582c6308a6e879679f77 [2021-11-07 01:05:46,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:05:46,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:05:46,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:05:46,339 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:05:46,339 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:05:46,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i [2021-11-07 01:05:46,426 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/data/572f81bdf/19d970af4e1d47389b1c5c98b8f046fc/FLAG19c47e01c [2021-11-07 01:05:47,226 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:05:47,234 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i [2021-11-07 01:05:47,256 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/data/572f81bdf/19d970af4e1d47389b1c5c98b8f046fc/FLAG19c47e01c [2021-11-07 01:05:47,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/data/572f81bdf/19d970af4e1d47389b1c5c98b8f046fc [2021-11-07 01:05:47,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:05:47,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:05:47,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:47,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:05:47,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:05:47,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:47" (1/1) ... [2021-11-07 01:05:47,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3287b4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:47, skipping insertion in model container [2021-11-07 01:05:47,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:47" (1/1) ... [2021-11-07 01:05:47,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:05:47,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:05:47,931 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i[33021,33034] [2021-11-07 01:05:48,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:48,176 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:05:48,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:05:48,233 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i[33021,33034] [2021-11-07 01:05:48,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:48,366 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:05:48,406 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i[33021,33034] [2021-11-07 01:05:48,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:48,551 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:05:48,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:48 WrapperNode [2021-11-07 01:05:48,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:48,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:05:48,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:05:48,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:05:48,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:48" (1/1) ... [2021-11-07 01:05:48,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:48" (1/1) ... [2021-11-07 01:05:48,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:05:48,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:05:48,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:05:48,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:05:48,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:48" (1/1) ... [2021-11-07 01:05:48,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:48" (1/1) ... [2021-11-07 01:05:48,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:48" (1/1) ... [2021-11-07 01:05:48,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:48" (1/1) ... [2021-11-07 01:05:48,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:48" (1/1) ... [2021-11-07 01:05:48,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:48" (1/1) ... [2021-11-07 01:05:48,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:48" (1/1) ... [2021-11-07 01:05:48,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:05:48,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:05:48,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:05:48,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:05:48,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:48" (1/1) ... [2021-11-07 01:05:48,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:48,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:05:48,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:05:48,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:05:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:05:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:05:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:05:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:05:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:05:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:05:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:05:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:05:48,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:05:48,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:05:48,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:05:59,911 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:05:59,912 INFO L299 CfgBuilder]: Removed 98 assume(true) statements. [2021-11-07 01:05:59,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:05:59 BoogieIcfgContainer [2021-11-07 01:05:59,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:05:59,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:05:59,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:05:59,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:05:59,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:05:47" (1/3) ... [2021-11-07 01:05:59,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eaa7f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:05:59, skipping insertion in model container [2021-11-07 01:05:59,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:48" (2/3) ... [2021-11-07 01:05:59,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eaa7f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:05:59, skipping insertion in model container [2021-11-07 01:05:59,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:05:59" (3/3) ... [2021-11-07 01:05:59,924 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test4-1.i [2021-11-07 01:05:59,929 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:05:59,930 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:05:59,988 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:05:59,994 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 [2021-11-07 01:05:59,995 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:06:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 210 states have (on average 1.7285714285714286) internal successors, (363), 220 states have internal predecessors, (363), 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) [2021-11-07 01:06:00,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:06:00,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:00,025 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:00,026 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:00,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:00,032 INFO L85 PathProgramCache]: Analyzing trace with hash 889550569, now seen corresponding path program 1 times [2021-11-07 01:06:00,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:00,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129487499] [2021-11-07 01:06:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:00,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:00,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:00,052 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:00,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:06:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:00,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:06:00,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:00,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:00,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:00,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:00,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129487499] [2021-11-07 01:06:00,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129487499] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:00,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:00,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:06:00,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018517005] [2021-11-07 01:06:00,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:06:00,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:00,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:06:00,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:06:00,404 INFO L87 Difference]: Start difference. First operand has 221 states, 210 states have (on average 1.7285714285714286) internal successors, (363), 220 states have internal predecessors, (363), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-07 01:06:00,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:00,475 INFO L93 Difference]: Finished difference Result 440 states and 724 transitions. [2021-11-07 01:06:00,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:06:00,477 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-07 01:06:00,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:00,489 INFO L225 Difference]: With dead ends: 440 [2021-11-07 01:06:00,489 INFO L226 Difference]: Without dead ends: 217 [2021-11-07 01:06:00,493 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:06:00,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-07 01:06:00,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-07 01:06:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 207 states have (on average 1.3623188405797102) internal successors, (282), 216 states have internal predecessors, (282), 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) [2021-11-07 01:06:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2021-11-07 01:06:00,544 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 8 [2021-11-07 01:06:00,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:00,544 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2021-11-07 01:06:00,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-07 01:06:00,545 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2021-11-07 01:06:00,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:06:00,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:00,546 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:00,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:00,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:00,759 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:00,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:00,760 INFO L85 PathProgramCache]: Analyzing trace with hash 921152950, now seen corresponding path program 1 times [2021-11-07 01:06:00,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:00,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036683141] [2021-11-07 01:06:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:00,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:00,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:00,765 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:00,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:06:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:00,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:06:00,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:00,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:01,035 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:01,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036683141] [2021-11-07 01:06:01,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036683141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:01,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:01,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:06:01,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690096752] [2021-11-07 01:06:01,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:01,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:01,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:01,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:01,039 INFO L87 Difference]: Start difference. First operand 217 states and 282 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-07 01:06:01,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:01,279 INFO L93 Difference]: Finished difference Result 433 states and 564 transitions. [2021-11-07 01:06:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:06:01,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 8 [2021-11-07 01:06:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:01,284 INFO L225 Difference]: With dead ends: 433 [2021-11-07 01:06:01,284 INFO L226 Difference]: Without dead ends: 388 [2021-11-07 01:06:01,285 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:01,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-07 01:06:01,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2021-11-07 01:06:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 378 states have (on average 1.3412698412698412) internal successors, (507), 387 states have internal predecessors, (507), 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) [2021-11-07 01:06:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 507 transitions. [2021-11-07 01:06:01,320 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 507 transitions. Word has length 8 [2021-11-07 01:06:01,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:01,320 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 507 transitions. [2021-11-07 01:06:01,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-07 01:06:01,320 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 507 transitions. [2021-11-07 01:06:01,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-07 01:06:01,333 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:01,333 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:01,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:01,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:01,545 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:01,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:01,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1731820508, now seen corresponding path program 1 times [2021-11-07 01:06:01,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:01,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874841595] [2021-11-07 01:06:01,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:01,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:01,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:01,551 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:01,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:06:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:02,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:06:02,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:02,889 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-07 01:06:02,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:03,580 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-07 01:06:03,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:03,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874841595] [2021-11-07 01:06:03,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874841595] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:03,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:03,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:06:03,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094150876] [2021-11-07 01:06:03,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:06:03,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:03,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:06:03,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:06:03,584 INFO L87 Difference]: Start difference. First operand 388 states and 507 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2021-11-07 01:06:03,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:03,727 INFO L93 Difference]: Finished difference Result 776 states and 1020 transitions. [2021-11-07 01:06:03,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:06:03,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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 204 [2021-11-07 01:06:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:03,731 INFO L225 Difference]: With dead ends: 776 [2021-11-07 01:06:03,731 INFO L226 Difference]: Without dead ends: 396 [2021-11-07 01:06:03,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:06:03,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-07 01:06:03,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 394. [2021-11-07 01:06:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 384 states have (on average 1.2942708333333333) internal successors, (497), 393 states have internal predecessors, (497), 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) [2021-11-07 01:06:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 497 transitions. [2021-11-07 01:06:03,755 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 497 transitions. Word has length 204 [2021-11-07 01:06:03,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:03,755 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 497 transitions. [2021-11-07 01:06:03,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2021-11-07 01:06:03,756 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 497 transitions. [2021-11-07 01:06:03,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-07 01:06:03,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:03,761 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:03,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:03,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:03,975 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:03,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:03,976 INFO L85 PathProgramCache]: Analyzing trace with hash -810577396, now seen corresponding path program 1 times [2021-11-07 01:06:03,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:03,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698841282] [2021-11-07 01:06:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:03,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:03,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:03,980 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:04,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:06:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:04,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:06:04,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 01:06:05,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 01:06:06,417 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:06,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698841282] [2021-11-07 01:06:06,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698841282] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:06,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:06,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 01:06:06,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495855903] [2021-11-07 01:06:06,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:06:06,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:06,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:06:06,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:06:06,421 INFO L87 Difference]: Start difference. First operand 394 states and 497 transitions. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 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) [2021-11-07 01:06:06,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:06,533 INFO L93 Difference]: Finished difference Result 745 states and 947 transitions. [2021-11-07 01:06:06,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:06:06,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 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 204 [2021-11-07 01:06:06,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:06,536 INFO L225 Difference]: With dead ends: 745 [2021-11-07 01:06:06,537 INFO L226 Difference]: Without dead ends: 382 [2021-11-07 01:06:06,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:06:06,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-07 01:06:06,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2021-11-07 01:06:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 372 states have (on average 1.282258064516129) internal successors, (477), 381 states have internal predecessors, (477), 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) [2021-11-07 01:06:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 477 transitions. [2021-11-07 01:06:06,554 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 477 transitions. Word has length 204 [2021-11-07 01:06:06,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:06,554 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 477 transitions. [2021-11-07 01:06:06,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 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) [2021-11-07 01:06:06,555 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 477 transitions. [2021-11-07 01:06:06,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-07 01:06:06,558 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:06,559 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:06,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:06,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:06,774 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:06,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:06,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2097413136, now seen corresponding path program 1 times [2021-11-07 01:06:06,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:06,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432583265] [2021-11-07 01:06:06,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:06,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:06,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:06,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:06,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:06:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:07,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:06:07,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-07 01:06:08,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-07 01:06:09,203 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:09,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432583265] [2021-11-07 01:06:09,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432583265] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:09,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:09,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:06:09,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478107901] [2021-11-07 01:06:09,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:06:09,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:09,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:06:09,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:06:09,206 INFO L87 Difference]: Start difference. First operand 382 states and 477 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2021-11-07 01:06:09,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:09,636 INFO L93 Difference]: Finished difference Result 715 states and 902 transitions. [2021-11-07 01:06:09,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:06:09,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 204 [2021-11-07 01:06:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:09,646 INFO L225 Difference]: With dead ends: 715 [2021-11-07 01:06:09,646 INFO L226 Difference]: Without dead ends: 380 [2021-11-07 01:06:09,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:06:09,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-07 01:06:09,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-11-07 01:06:09,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 370 states have (on average 1.281081081081081) internal successors, (474), 379 states have internal predecessors, (474), 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) [2021-11-07 01:06:09,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 474 transitions. [2021-11-07 01:06:09,661 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 474 transitions. Word has length 204 [2021-11-07 01:06:09,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:09,662 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 474 transitions. [2021-11-07 01:06:09,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2021-11-07 01:06:09,662 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 474 transitions. [2021-11-07 01:06:09,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-07 01:06:09,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:09,666 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:09,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:09,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:09,882 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:09,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:09,882 INFO L85 PathProgramCache]: Analyzing trace with hash -117938176, now seen corresponding path program 1 times [2021-11-07 01:06:09,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:09,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409036393] [2021-11-07 01:06:09,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:09,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:09,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:09,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:09,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:06:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:10,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:06:10,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-07 01:06:11,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-07 01:06:11,786 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:11,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409036393] [2021-11-07 01:06:11,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409036393] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:11,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:11,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:06:11,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163086225] [2021-11-07 01:06:11,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:11,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:11,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:11,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:11,789 INFO L87 Difference]: Start difference. First operand 380 states and 474 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-11-07 01:06:11,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:11,916 INFO L93 Difference]: Finished difference Result 731 states and 930 transitions. [2021-11-07 01:06:11,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:06:11,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 211 [2021-11-07 01:06:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:11,920 INFO L225 Difference]: With dead ends: 731 [2021-11-07 01:06:11,920 INFO L226 Difference]: Without dead ends: 392 [2021-11-07 01:06:11,921 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:11,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-07 01:06:11,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2021-11-07 01:06:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 382 states have (on average 1.2722513089005236) internal successors, (486), 391 states have internal predecessors, (486), 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) [2021-11-07 01:06:11,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 486 transitions. [2021-11-07 01:06:11,937 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 486 transitions. Word has length 211 [2021-11-07 01:06:11,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:11,937 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 486 transitions. [2021-11-07 01:06:11,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-11-07 01:06:11,938 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 486 transitions. [2021-11-07 01:06:11,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-07 01:06:11,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:11,948 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:11,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:12,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:12,166 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:12,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:12,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1390117557, now seen corresponding path program 1 times [2021-11-07 01:06:12,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:12,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489826001] [2021-11-07 01:06:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:12,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:12,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:12,169 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:12,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:06:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:13,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:06:13,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:06:13,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:06:14,277 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:14,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489826001] [2021-11-07 01:06:14,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489826001] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:14,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [547459209] [2021-11-07 01:06:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:14,279 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:14,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:14,281 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:14,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:06:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:15,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:06:15,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 01:06:15,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 01:06:16,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [547459209] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:16,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:06:16,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [5, 5] total 11 [2021-11-07 01:06:16,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206354286] [2021-11-07 01:06:16,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:06:16,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:16,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:06:16,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:06:16,485 INFO L87 Difference]: Start difference. First operand 392 states and 486 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2021-11-07 01:06:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:16,681 INFO L93 Difference]: Finished difference Result 729 states and 920 transitions. [2021-11-07 01:06:16,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:06:16,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 214 [2021-11-07 01:06:16,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:16,686 INFO L225 Difference]: With dead ends: 729 [2021-11-07 01:06:16,686 INFO L226 Difference]: Without dead ends: 434 [2021-11-07 01:06:16,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:06:16,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-07 01:06:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 432. [2021-11-07 01:06:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 422 states have (on average 1.2464454976303319) internal successors, (526), 431 states have internal predecessors, (526), 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) [2021-11-07 01:06:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 526 transitions. [2021-11-07 01:06:16,705 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 526 transitions. Word has length 214 [2021-11-07 01:06:16,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:16,705 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 526 transitions. [2021-11-07 01:06:16,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2021-11-07 01:06:16,706 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 526 transitions. [2021-11-07 01:06:16,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-07 01:06:16,709 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:16,710 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:16,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:16,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:17,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:17,133 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:17,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:17,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1491793581, now seen corresponding path program 1 times [2021-11-07 01:06:17,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:17,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812543907] [2021-11-07 01:06:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:17,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:17,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:17,137 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:17,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:06:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:18,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:06:18,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:06:18,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:19,363 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:06:19,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:19,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812543907] [2021-11-07 01:06:19,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812543907] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:19,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1024930241] [2021-11-07 01:06:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:19,366 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:19,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:19,383 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:19,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:06:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:20,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:06:20,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:22,506 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-07 01:06:22,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-07 01:06:24,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1024930241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:24,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:06:24,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:06:24,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023189513] [2021-11-07 01:06:24,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:06:24,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:24,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:06:24,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:06:24,294 INFO L87 Difference]: Start difference. First operand 432 states and 526 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-07 01:06:25,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:25,000 INFO L93 Difference]: Finished difference Result 708 states and 867 transitions. [2021-11-07 01:06:25,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:06:25,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 214 [2021-11-07 01:06:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:25,004 INFO L225 Difference]: With dead ends: 708 [2021-11-07 01:06:25,004 INFO L226 Difference]: Without dead ends: 430 [2021-11-07 01:06:25,005 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 845 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:06:25,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-11-07 01:06:25,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2021-11-07 01:06:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 420 states have (on average 1.2452380952380953) internal successors, (523), 429 states have internal predecessors, (523), 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) [2021-11-07 01:06:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 523 transitions. [2021-11-07 01:06:25,021 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 523 transitions. Word has length 214 [2021-11-07 01:06:25,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:25,022 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 523 transitions. [2021-11-07 01:06:25,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-07 01:06:25,022 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 523 transitions. [2021-11-07 01:06:25,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-07 01:06:25,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:25,026 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:25,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 01:06:25,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:25,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:25,442 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:25,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash -747559960, now seen corresponding path program 1 times [2021-11-07 01:06:25,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:25,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523172032] [2021-11-07 01:06:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:25,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:25,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:25,445 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:25,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:06:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:27,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:06:27,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:06:27,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:06:28,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:28,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523172032] [2021-11-07 01:06:28,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523172032] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:28,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1306170571] [2021-11-07 01:06:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:28,216 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:28,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:28,222 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:28,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:06:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:30,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:06:30,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-07 01:06:30,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-07 01:06:31,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1306170571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:31,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:06:31,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-07 01:06:31,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419797697] [2021-11-07 01:06:31,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:06:31,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:31,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:06:31,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:06:31,320 INFO L87 Difference]: Start difference. First operand 430 states and 523 transitions. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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) [2021-11-07 01:06:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:31,448 INFO L93 Difference]: Finished difference Result 739 states and 911 transitions. [2021-11-07 01:06:31,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:06:31,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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 224 [2021-11-07 01:06:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:31,452 INFO L225 Difference]: With dead ends: 739 [2021-11-07 01:06:31,452 INFO L226 Difference]: Without dead ends: 398 [2021-11-07 01:06:31,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 883 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:06:31,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-07 01:06:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 396. [2021-11-07 01:06:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 386 states have (on average 1.2098445595854923) internal successors, (467), 395 states have internal predecessors, (467), 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) [2021-11-07 01:06:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 467 transitions. [2021-11-07 01:06:31,472 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 467 transitions. Word has length 224 [2021-11-07 01:06:31,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:31,473 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 467 transitions. [2021-11-07 01:06:31,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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) [2021-11-07 01:06:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 467 transitions. [2021-11-07 01:06:31,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-07 01:06:31,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:31,478 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:31,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:31,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:31,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:31,894 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:31,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:31,894 INFO L85 PathProgramCache]: Analyzing trace with hash 948450308, now seen corresponding path program 1 times [2021-11-07 01:06:31,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:31,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021516419] [2021-11-07 01:06:31,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:31,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:31,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:31,897 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:31,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:06:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:33,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:06:33,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:34,006 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:06:34,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:06:34,684 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:34,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021516419] [2021-11-07 01:06:34,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021516419] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:34,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [195893269] [2021-11-07 01:06:34,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:34,685 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:34,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:34,686 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:34,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:06:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:37,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:06:37,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:06:37,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:06:38,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [195893269] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:38,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563525920] [2021-11-07 01:06:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:38,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:06:38,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:06:38,184 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:06:38,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 01:06:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:40,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:06:40,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:06:41,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:06:42,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563525920] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:42,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:06:42,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 14 [2021-11-07 01:06:42,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526050681] [2021-11-07 01:06:42,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 01:06:42,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:42,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 01:06:42,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:06:42,136 INFO L87 Difference]: Start difference. First operand 396 states and 467 transitions. Second operand has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 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) [2021-11-07 01:06:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:47,030 INFO L93 Difference]: Finished difference Result 1525 states and 1866 transitions. [2021-11-07 01:06:47,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 01:06:47,032 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 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 224 [2021-11-07 01:06:47,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:47,038 INFO L225 Difference]: With dead ends: 1525 [2021-11-07 01:06:47,039 INFO L226 Difference]: Without dead ends: 1172 [2021-11-07 01:06:47,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1328 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=689, Invalid=1963, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 01:06:47,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-11-07 01:06:47,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2021-11-07 01:06:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1162 states have (on average 1.1764199655765921) internal successors, (1367), 1171 states have internal predecessors, (1367), 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) [2021-11-07 01:06:47,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1367 transitions. [2021-11-07 01:06:47,089 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1367 transitions. Word has length 224 [2021-11-07 01:06:47,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:47,089 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1367 transitions. [2021-11-07 01:06:47,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 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) [2021-11-07 01:06:47,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1367 transitions. [2021-11-07 01:06:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2021-11-07 01:06:47,108 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:47,109 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 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] [2021-11-07 01:06:47,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:47,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:47,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:47,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:06:47,719 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:06:47,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash 330999072, now seen corresponding path program 2 times [2021-11-07 01:06:47,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:47,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354606650] [2021-11-07 01:06:47,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:06:47,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:47,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:47,724 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:47,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:06:50,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:06:50,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:06:50,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:06:50,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 01:06:52,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 01:06:53,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:53,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354606650] [2021-11-07 01:06:53,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354606650] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:53,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [204987322] [2021-11-07 01:06:53,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:06:53,939 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:53,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:53,940 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:53,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:06:57,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:06:57,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:06:57,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:06:57,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 01:06:59,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 01:07:00,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [204987322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:07:00,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096408170] [2021-11-07 01:07:00,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:07:00,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:00,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:07:00,983 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:07:00,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 01:07:04,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:07:04,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:07:04,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:07:04,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 6 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-11-07 01:07:05,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 6 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-11-07 01:07:07,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096408170] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:07:07,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:07:07,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 6, 6] total 23 [2021-11-07 01:07:07,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878372720] [2021-11-07 01:07:07,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:07:07,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:07,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:07:07,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:07:07,580 INFO L87 Difference]: Start difference. First operand 1172 states and 1367 transitions. Second operand has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 23 states have internal predecessors, (192), 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) [2021-11-07 01:07:13,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:13,703 INFO L93 Difference]: Finished difference Result 3445 states and 4227 transitions. [2021-11-07 01:07:13,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:07:13,705 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 23 states have internal predecessors, (192), 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 628 [2021-11-07 01:07:13,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:13,718 INFO L225 Difference]: With dead ends: 3445 [2021-11-07 01:07:13,718 INFO L226 Difference]: Without dead ends: 2320 [2021-11-07 01:07:13,721 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3776 GetRequests, 3748 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=311, Invalid=559, Unknown=0, NotChecked=0, Total=870 [2021-11-07 01:07:13,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-11-07 01:07:13,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1412. [2021-11-07 01:07:13,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1402 states have (on average 1.1547788873038516) internal successors, (1619), 1411 states have internal predecessors, (1619), 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) [2021-11-07 01:07:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1619 transitions. [2021-11-07 01:07:13,836 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1619 transitions. Word has length 628 [2021-11-07 01:07:13,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:13,837 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 1619 transitions. [2021-11-07 01:07:13,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 23 states have internal predecessors, (192), 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) [2021-11-07 01:07:13,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1619 transitions. [2021-11-07 01:07:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2021-11-07 01:07:13,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:13,844 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2021-11-07 01:07:13,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:14,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-07 01:07:14,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:14,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:14,454 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:07:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:14,455 INFO L85 PathProgramCache]: Analyzing trace with hash -815531232, now seen corresponding path program 3 times [2021-11-07 01:07:14,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:14,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070559382] [2021-11-07 01:07:14,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:07:14,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:14,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:14,459 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:14,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dd02885-7e76-4d3e-867e-cadc1d7493de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process