./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH --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 64bit --witnessprinter.graph.data.programhash 5afcd851c0eed3ee93d773a0172936a989a39cd6889ca2587c3b833a21bc8a3a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:44:32,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:44:32,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:44:32,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:44:32,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:44:32,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:44:32,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:44:32,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:44:32,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:44:32,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:44:32,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:44:32,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:44:32,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:44:32,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:44:32,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:44:32,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:44:32,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:44:32,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:44:32,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:44:32,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:44:32,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:44:32,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:44:32,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:44:32,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:44:32,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:44:32,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:44:32,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:44:32,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:44:32,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:44:32,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:44:32,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:44:32,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:44:32,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:44:32,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:44:32,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:44:32,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:44:32,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:44:32,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:44:32,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:44:32,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:44:32,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:44:32,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:44:32,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:44:32,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:44:32,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:44:32,776 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:44:32,777 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:44:32,777 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:44:32,778 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:44:32,778 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:44:32,778 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:44:32,779 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:44:32,780 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:44:32,781 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:44:32,781 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:44:32,782 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:44:32,782 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:44:32,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:44:32,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:44:32,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:44:32,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:44:32,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:44:32,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:44:32,785 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:44:32,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:44:32,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:44:32,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:44:32,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:44:32,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:44:32,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:44:32,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:44:32,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:44:32,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:44:32,788 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:44:32,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:44:32,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:44:32,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:44:32,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:44:32,790 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5afcd851c0eed3ee93d773a0172936a989a39cd6889ca2587c3b833a21bc8a3a [2021-11-03 04:44:33,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:44:33,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:44:33,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:44:33,244 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:44:33,245 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:44:33,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-03 04:44:33,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/data/3845e291b/385132f6120d425ebc14cd2c25ba30d3/FLAG922dc02bb [2021-11-03 04:44:34,507 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:44:34,508 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-03 04:44:34,587 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/data/3845e291b/385132f6120d425ebc14cd2c25ba30d3/FLAG922dc02bb [2021-11-03 04:44:34,777 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/data/3845e291b/385132f6120d425ebc14cd2c25ba30d3 [2021-11-03 04:44:34,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:44:34,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:44:34,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:44:34,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:44:34,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:44:34,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:44:34" (1/1) ... [2021-11-03 04:44:34,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233354df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:34, skipping insertion in model container [2021-11-03 04:44:34,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:44:34" (1/1) ... [2021-11-03 04:44:34,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:44:35,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:44:38,050 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:38,281 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:38,283 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:44:39,642 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410165,410178] [2021-11-03 04:44:39,645 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410334,410347] [2021-11-03 04:44:39,646 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410501,410514] [2021-11-03 04:44:39,647 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410669,410682] [2021-11-03 04:44:39,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:44:39,741 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) [2021-11-03 04:44:39,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@50ae1363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:39, skipping insertion in model container [2021-11-03 04:44:39,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:44:39,742 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:44:39,745 INFO L168 Benchmark]: Toolchain (without parser) took 4958.98 ms. Allocated memory was 102.8 MB in the beginning and 134.2 MB in the end (delta: 31.5 MB). Free memory was 52.8 MB in the beginning and 60.2 MB in the end (delta: -7.4 MB). Peak memory consumption was 66.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:44:39,746 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory is still 54.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:44:39,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4952.43 ms. Allocated memory was 102.8 MB in the beginning and 134.2 MB in the end (delta: 31.5 MB). Free memory was 52.5 MB in the beginning and 60.2 MB in the end (delta: -7.6 MB). Peak memory consumption was 66.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:44:39,750 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory is still 54.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 4952.43 ms. Allocated memory was 102.8 MB in the beginning and 134.2 MB in the end (delta: 31.5 MB). Free memory was 52.5 MB in the beginning and 60.2 MB in the end (delta: -7.6 MB). Peak memory consumption was 66.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6667]: 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH --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 64bit --witnessprinter.graph.data.programhash 5afcd851c0eed3ee93d773a0172936a989a39cd6889ca2587c3b833a21bc8a3a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:44:42,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:44:42,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:44:42,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:44:42,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:44:42,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:44:42,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:44:42,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:44:42,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:44:42,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:44:42,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:44:42,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:44:42,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:44:42,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:44:42,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:44:42,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:44:42,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:44:42,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:44:42,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:44:42,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:44:42,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:44:42,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:44:42,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:44:42,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:44:42,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:44:42,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:44:42,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:44:42,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:44:42,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:44:42,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:44:42,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:44:42,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:44:42,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:44:42,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:44:42,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:44:42,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:44:42,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:44:42,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:44:42,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:44:42,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:44:42,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:44:42,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:44:42,642 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:44:42,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:44:42,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:44:42,644 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:44:42,645 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:44:42,645 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:44:42,645 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:44:42,645 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:44:42,646 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:44:42,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:44:42,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:44:42,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:44:42,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:44:42,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:44:42,650 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:44:42,650 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:44:42,650 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:44:42,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:44:42,651 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:44:42,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:44:42,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:44:42,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:44:42,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:44:42,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:44:42,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:44:42,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:44:42,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:44:42,654 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:44:42,654 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:44:42,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:44:42,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:44:42,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:44:42,655 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5afcd851c0eed3ee93d773a0172936a989a39cd6889ca2587c3b833a21bc8a3a [2021-11-03 04:44:43,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:44:43,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:44:43,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:44:43,133 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:44:43,134 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:44:43,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-03 04:44:43,235 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/data/ecb85aadd/f241e3ccc2794d6993bfe481f3b55b77/FLAGb466b1f23 [2021-11-03 04:44:44,419 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:44:44,419 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-03 04:44:44,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/data/ecb85aadd/f241e3ccc2794d6993bfe481f3b55b77/FLAGb466b1f23 [2021-11-03 04:44:44,640 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/data/ecb85aadd/f241e3ccc2794d6993bfe481f3b55b77 [2021-11-03 04:44:44,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:44:44,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:44:44,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:44:44,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:44:44,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:44:44,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:44:44" (1/1) ... [2021-11-03 04:44:44,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242bffb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:44, skipping insertion in model container [2021-11-03 04:44:44,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:44:44" (1/1) ... [2021-11-03 04:44:44,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:44:44,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:44:49,882 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410165,410178] [2021-11-03 04:44:49,886 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410334,410347] [2021-11-03 04:44:49,887 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410501,410514] [2021-11-03 04:44:49,887 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410669,410682] [2021-11-03 04:44:49,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:44:50,004 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:44:50,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:44:50,720 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410165,410178] [2021-11-03 04:44:50,721 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410334,410347] [2021-11-03 04:44:50,722 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410501,410514] [2021-11-03 04:44:50,722 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410669,410682] [2021-11-03 04:44:50,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:44:50,771 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:44:51,345 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410165,410178] [2021-11-03 04:44:51,346 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410334,410347] [2021-11-03 04:44:51,348 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410501,410514] [2021-11-03 04:44:51,349 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_99b36c5d-cae2-43b6-af4d-4d6e870806c9/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[410669,410682] [2021-11-03 04:44:51,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:44:51,713 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:44:51,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:51 WrapperNode [2021-11-03 04:44:51,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:44:51,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:44:51,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:44:51,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:44:51,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:51" (1/1) ... [2021-11-03 04:44:51,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:51" (1/1) ... [2021-11-03 04:44:55,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:44:55,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:44:55,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:44:55,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:44:55,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:51" (1/1) ... [2021-11-03 04:44:55,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:51" (1/1) ... [2021-11-03 04:44:55,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:51" (1/1) ... [2021-11-03 04:44:55,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:51" (1/1) ... [2021-11-03 04:44:57,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:51" (1/1) ... [2021-11-03 04:44:58,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:51" (1/1) ... [2021-11-03 04:44:58,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:51" (1/1) ... [2021-11-03 04:44:58,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:44:58,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:44:58,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:44:58,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:44:58,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:51" (1/1) ... [2021-11-03 04:44:58,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:44:58,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:44:58,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:44:58,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:44:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:44:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:44:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:44:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 04:44:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:44:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:44:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-03 04:44:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 04:44:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 04:44:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 04:44:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 04:44:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:44:58,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:44:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:44:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:44:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:44:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 04:44:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 04:44:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 04:44:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-03 04:44:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:44:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:44:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:44:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:44:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 04:44:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:44:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:44:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 04:44:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 04:44:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 04:44:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 04:52:01,112 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_pci_pci_instance_2_switch_break: call ULTIMATE.dealloc(ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.base, ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.offset);havoc ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.base, ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.offset; [2021-11-03 04:52:01,114 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L11626: #t~ret2343 := main_#res; [2021-11-03 04:52:01,117 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 04:52:01,117 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_16_returnLabel: main_#res := 0bv32; [2021-11-03 04:52:01,211 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:52:01,212 INFO L299 CfgBuilder]: Removed 22860 assume(true) statements. [2021-11-03 04:52:01,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:52:01 BoogieIcfgContainer [2021-11-03 04:52:01,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:52:01,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:52:01,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:52:01,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:52:01,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:44:44" (1/3) ... [2021-11-03 04:52:01,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbde45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:52:01, skipping insertion in model container [2021-11-03 04:52:01,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:44:51" (2/3) ... [2021-11-03 04:52:01,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbde45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:52:01, skipping insertion in model container [2021-11-03 04:52:01,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:52:01" (3/3) ... [2021-11-03 04:52:01,241 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-03 04:52:01,248 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:52:01,248 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 167 error locations. [2021-11-03 04:52:01,372 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:52:01,379 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 [2021-11-03 04:52:01,380 INFO L340 AbstractCegarLoop]: Starting to check reachability of 167 error locations. [2021-11-03 04:52:01,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 14754 states, 14587 states have (on average 1.3150065126482484) internal successors, (19182), 14753 states have internal predecessors, (19182), 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) [2021-11-03 04:52:01,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 04:52:01,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:52:01,643 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:52:01,644 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr137ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:52:01,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:52:01,651 INFO L85 PathProgramCache]: Analyzing trace with hash -766795825, now seen corresponding path program 1 times [2021-11-03 04:52:01,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:52:01,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782446119] [2021-11-03 04:52:01,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:52:01,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:52:01,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:52:01,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:52:01,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:52:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:52:05,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:52:05,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:52:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:06,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:52:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:06,802 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:52:06,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782446119] [2021-11-03 04:52:06,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782446119] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:52:06,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:52:06,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:52:06,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897667555] [2021-11-03 04:52:06,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:52:06,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:52:06,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:52:06,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:52:06,886 INFO L87 Difference]: Start difference. First operand has 14754 states, 14587 states have (on average 1.3150065126482484) internal successors, (19182), 14753 states have internal predecessors, (19182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:52:08,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:52:08,326 INFO L93 Difference]: Finished difference Result 29392 states and 38182 transitions. [2021-11-03 04:52:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:52:08,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-03 04:52:08,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:52:08,462 INFO L225 Difference]: With dead ends: 29392 [2021-11-03 04:52:08,462 INFO L226 Difference]: Without dead ends: 14261 [2021-11-03 04:52:08,504 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:52:08,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14261 states. [2021-11-03 04:52:09,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 14261. [2021-11-03 04:52:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14261 states, 14094 states have (on average 1.2736625514403292) internal successors, (17951), 14260 states have internal predecessors, (17951), 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) [2021-11-03 04:52:09,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14261 states to 14261 states and 17951 transitions. [2021-11-03 04:52:09,567 INFO L78 Accepts]: Start accepts. Automaton has 14261 states and 17951 transitions. Word has length 31 [2021-11-03 04:52:09,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:52:09,570 INFO L470 AbstractCegarLoop]: Abstraction has 14261 states and 17951 transitions. [2021-11-03 04:52:09,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:52:09,571 INFO L276 IsEmpty]: Start isEmpty. Operand 14261 states and 17951 transitions. [2021-11-03 04:52:09,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 04:52:09,574 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:52:09,575 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:52:09,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 04:52:09,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:52:09,791 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr137ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:52:09,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:52:09,792 INFO L85 PathProgramCache]: Analyzing trace with hash -704756211, now seen corresponding path program 1 times [2021-11-03 04:52:09,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:52:09,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779275129] [2021-11-03 04:52:09,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:52:09,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:52:09,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:52:09,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:52:09,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:52:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:52:13,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:52:13,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:52:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:14,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:52:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:15,172 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:52:15,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779275129] [2021-11-03 04:52:15,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779275129] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:52:15,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:52:15,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-03 04:52:15,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280043248] [2021-11-03 04:52:15,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:52:15,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:52:15,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:52:15,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:52:15,176 INFO L87 Difference]: Start difference. First operand 14261 states and 17951 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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) [2021-11-03 04:52:29,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:52:29,246 INFO L93 Difference]: Finished difference Result 29764 states and 37423 transitions. [2021-11-03 04:52:29,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:52:29,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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 31 [2021-11-03 04:52:29,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:52:29,373 INFO L225 Difference]: With dead ends: 29764 [2021-11-03 04:52:29,373 INFO L226 Difference]: Without dead ends: 24837 [2021-11-03 04:52:29,387 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:52:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24837 states. [2021-11-03 04:52:30,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24837 to 14264. [2021-11-03 04:52:30,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14264 states, 14097 states have (on average 1.2736043129743917) internal successors, (17954), 14263 states have internal predecessors, (17954), 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) [2021-11-03 04:52:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14264 states to 14264 states and 17954 transitions. [2021-11-03 04:52:30,457 INFO L78 Accepts]: Start accepts. Automaton has 14264 states and 17954 transitions. Word has length 31 [2021-11-03 04:52:30,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:52:30,458 INFO L470 AbstractCegarLoop]: Abstraction has 14264 states and 17954 transitions. [2021-11-03 04:52:30,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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) [2021-11-03 04:52:30,458 INFO L276 IsEmpty]: Start isEmpty. Operand 14264 states and 17954 transitions. [2021-11-03 04:52:30,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 04:52:30,466 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:52:30,466 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:52:30,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:52:30,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:52:30,691 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr137ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:52:30,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:52:30,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2001863183, now seen corresponding path program 1 times [2021-11-03 04:52:30,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:52:30,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138297551] [2021-11-03 04:52:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:52:30,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:52:30,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:52:30,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:52:30,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:52:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:52:34,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:52:34,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:52:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:35,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:52:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:35,461 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:52:35,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138297551] [2021-11-03 04:52:35,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138297551] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:52:35,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:52:35,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:52:35,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347211437] [2021-11-03 04:52:35,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:52:35,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:52:35,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:52:35,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:52:35,464 INFO L87 Difference]: Start difference. First operand 14264 states and 17954 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-11-03 04:52:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:52:41,487 INFO L93 Difference]: Finished difference Result 20808 states and 26162 transitions. [2021-11-03 04:52:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:52:41,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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 31 [2021-11-03 04:52:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:52:41,548 INFO L225 Difference]: With dead ends: 20808 [2021-11-03 04:52:41,548 INFO L226 Difference]: Without dead ends: 20356 [2021-11-03 04:52:41,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:52:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20356 states. [2021-11-03 04:52:42,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20356 to 19814. [2021-11-03 04:52:42,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19814 states, 19647 states have (on average 1.2760217844963608) internal successors, (25070), 19813 states have internal predecessors, (25070), 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) [2021-11-03 04:52:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19814 states to 19814 states and 25070 transitions. [2021-11-03 04:52:42,807 INFO L78 Accepts]: Start accepts. Automaton has 19814 states and 25070 transitions. Word has length 31 [2021-11-03 04:52:42,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:52:42,807 INFO L470 AbstractCegarLoop]: Abstraction has 19814 states and 25070 transitions. [2021-11-03 04:52:42,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-11-03 04:52:42,809 INFO L276 IsEmpty]: Start isEmpty. Operand 19814 states and 25070 transitions. [2021-11-03 04:52:42,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 04:52:42,810 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:52:42,810 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:52:42,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:52:43,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:52:43,030 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr137ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:52:43,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:52:43,031 INFO L85 PathProgramCache]: Analyzing trace with hash 721999505, now seen corresponding path program 1 times [2021-11-03 04:52:43,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:52:43,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504008815] [2021-11-03 04:52:43,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:52:43,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:52:43,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:52:43,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:52:43,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:52:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:52:46,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:52:46,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:52:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:47,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:52:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:48,042 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:52:48,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504008815] [2021-11-03 04:52:48,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504008815] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:52:48,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:52:48,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:52:48,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588623744] [2021-11-03 04:52:48,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:52:48,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:52:48,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:52:48,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:52:48,044 INFO L87 Difference]: Start difference. First operand 19814 states and 25070 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-03 04:52:53,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:52:53,788 INFO L93 Difference]: Finished difference Result 21663 states and 27210 transitions. [2021-11-03 04:52:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:52:53,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 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 31 [2021-11-03 04:52:53,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:52:53,854 INFO L225 Difference]: With dead ends: 21663 [2021-11-03 04:52:53,854 INFO L226 Difference]: Without dead ends: 21212 [2021-11-03 04:52:53,864 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:52:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21212 states. [2021-11-03 04:52:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21212 to 20558. [2021-11-03 04:52:55,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20558 states, 20391 states have (on average 1.2757589132460398) internal successors, (26014), 20557 states have internal predecessors, (26014), 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) [2021-11-03 04:52:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20558 states to 20558 states and 26014 transitions. [2021-11-03 04:52:55,052 INFO L78 Accepts]: Start accepts. Automaton has 20558 states and 26014 transitions. Word has length 31 [2021-11-03 04:52:55,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:52:55,052 INFO L470 AbstractCegarLoop]: Abstraction has 20558 states and 26014 transitions. [2021-11-03 04:52:55,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-03 04:52:55,053 INFO L276 IsEmpty]: Start isEmpty. Operand 20558 states and 26014 transitions. [2021-11-03 04:52:55,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 04:52:55,054 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:52:55,054 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:52:55,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:52:55,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:52:55,279 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr137ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:52:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:52:55,280 INFO L85 PathProgramCache]: Analyzing trace with hash -289117745, now seen corresponding path program 1 times [2021-11-03 04:52:55,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:52:55,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820165533] [2021-11-03 04:52:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:52:55,282 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:52:55,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:52:55,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:52:55,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:52:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:52:59,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:52:59,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:52:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:52:59,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:00,114 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:53:00,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820165533] [2021-11-03 04:53:00,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820165533] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:00,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:53:00,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:53:00,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547341258] [2021-11-03 04:53:00,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:53:00,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:53:00,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:53:00,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:53:00,117 INFO L87 Difference]: Start difference. First operand 20558 states and 26014 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-11-03 04:53:01,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:01,996 INFO L93 Difference]: Finished difference Result 20558 states and 26014 transitions. [2021-11-03 04:53:01,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:53:01,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 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 31 [2021-11-03 04:53:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:02,045 INFO L225 Difference]: With dead ends: 20558 [2021-11-03 04:53:02,045 INFO L226 Difference]: Without dead ends: 20554 [2021-11-03 04:53:02,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:53:02,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20554 states. [2021-11-03 04:53:03,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20554 to 20554. [2021-11-03 04:53:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20554 states, 20389 states have (on average 1.2756878709107853) internal successors, (26010), 20553 states have internal predecessors, (26010), 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) [2021-11-03 04:53:03,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20554 states to 20554 states and 26010 transitions. [2021-11-03 04:53:03,169 INFO L78 Accepts]: Start accepts. Automaton has 20554 states and 26010 transitions. Word has length 31 [2021-11-03 04:53:03,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:03,169 INFO L470 AbstractCegarLoop]: Abstraction has 20554 states and 26010 transitions. [2021-11-03 04:53:03,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-11-03 04:53:03,170 INFO L276 IsEmpty]: Start isEmpty. Operand 20554 states and 26010 transitions. [2021-11-03 04:53:03,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 04:53:03,171 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:03,171 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:53:03,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:53:03,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:53:03,395 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr138ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:53:03,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:03,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1332294994, now seen corresponding path program 1 times [2021-11-03 04:53:03,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:53:03,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433455890] [2021-11-03 04:53:03,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:03,398 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:53:03,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:53:03,399 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:53:03,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:53:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:07,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:53:07,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:07,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:08,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:53:08,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433455890] [2021-11-03 04:53:08,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433455890] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:08,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:53:08,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:53:08,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011212046] [2021-11-03 04:53:08,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:53:08,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:53:08,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:53:08,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:53:08,318 INFO L87 Difference]: Start difference. First operand 20554 states and 26010 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-11-03 04:53:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:10,356 INFO L93 Difference]: Finished difference Result 20554 states and 26010 transitions. [2021-11-03 04:53:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:53:10,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 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 33 [2021-11-03 04:53:10,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:10,409 INFO L225 Difference]: With dead ends: 20554 [2021-11-03 04:53:10,409 INFO L226 Difference]: Without dead ends: 20550 [2021-11-03 04:53:10,415 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:53:10,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20550 states. [2021-11-03 04:53:11,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20550 to 20550. [2021-11-03 04:53:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20550 states, 20387 states have (on average 1.2756168146367783) internal successors, (26006), 20549 states have internal predecessors, (26006), 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) [2021-11-03 04:53:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20550 states to 20550 states and 26006 transitions. [2021-11-03 04:53:11,481 INFO L78 Accepts]: Start accepts. Automaton has 20550 states and 26006 transitions. Word has length 33 [2021-11-03 04:53:11,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:11,482 INFO L470 AbstractCegarLoop]: Abstraction has 20550 states and 26006 transitions. [2021-11-03 04:53:11,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-11-03 04:53:11,482 INFO L276 IsEmpty]: Start isEmpty. Operand 20550 states and 26006 transitions. [2021-11-03 04:53:11,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-03 04:53:11,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:11,483 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:53:11,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:53:11,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:53:11,695 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr139ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:53:11,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:11,696 INFO L85 PathProgramCache]: Analyzing trace with hash 436809045, now seen corresponding path program 1 times [2021-11-03 04:53:11,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:53:11,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405011654] [2021-11-03 04:53:11,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:11,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:53:11,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:53:11,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:53:11,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:53:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:15,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:53:15,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:16,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:16,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:53:16,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405011654] [2021-11-03 04:53:16,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405011654] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:16,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:53:16,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:53:16,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686560705] [2021-11-03 04:53:16,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:53:16,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:53:16,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:53:16,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:53:16,614 INFO L87 Difference]: Start difference. First operand 20550 states and 26006 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:18,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:18,268 INFO L93 Difference]: Finished difference Result 20550 states and 26006 transitions. [2021-11-03 04:53:18,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:53:18,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-03 04:53:18,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:18,308 INFO L225 Difference]: With dead ends: 20550 [2021-11-03 04:53:18,309 INFO L226 Difference]: Without dead ends: 20546 [2021-11-03 04:53:18,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:53:18,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20546 states. [2021-11-03 04:53:19,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20546 to 20546. [2021-11-03 04:53:19,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20546 states, 20385 states have (on average 1.2755457444199165) internal successors, (26002), 20545 states have internal predecessors, (26002), 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) [2021-11-03 04:53:19,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20546 states to 20546 states and 26002 transitions. [2021-11-03 04:53:19,565 INFO L78 Accepts]: Start accepts. Automaton has 20546 states and 26002 transitions. Word has length 35 [2021-11-03 04:53:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:19,565 INFO L470 AbstractCegarLoop]: Abstraction has 20546 states and 26002 transitions. [2021-11-03 04:53:19,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:19,565 INFO L276 IsEmpty]: Start isEmpty. Operand 20546 states and 26002 transitions. [2021-11-03 04:53:19,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 04:53:19,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:19,566 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:53:19,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:53:19,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:53:19,771 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr140ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:53:19,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:19,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1131728424, now seen corresponding path program 1 times [2021-11-03 04:53:19,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:53:19,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150435219] [2021-11-03 04:53:19,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:19,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:53:19,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:53:19,776 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:53:19,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:53:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:23,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:53:23,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:24,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:25,236 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:53:25,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150435219] [2021-11-03 04:53:25,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150435219] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:25,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:53:25,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:53:25,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415738222] [2021-11-03 04:53:25,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:53:25,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:53:25,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:53:25,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:53:25,238 INFO L87 Difference]: Start difference. First operand 20546 states and 26002 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:27,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:27,161 INFO L93 Difference]: Finished difference Result 20546 states and 26002 transitions. [2021-11-03 04:53:27,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:53:27,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-03 04:53:27,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:27,214 INFO L225 Difference]: With dead ends: 20546 [2021-11-03 04:53:27,214 INFO L226 Difference]: Without dead ends: 20542 [2021-11-03 04:53:27,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:53:27,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20542 states. [2021-11-03 04:53:28,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20542 to 20542. [2021-11-03 04:53:28,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20542 states, 20383 states have (on average 1.2754746602560958) internal successors, (25998), 20541 states have internal predecessors, (25998), 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) [2021-11-03 04:53:28,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20542 states to 20542 states and 25998 transitions. [2021-11-03 04:53:28,825 INFO L78 Accepts]: Start accepts. Automaton has 20542 states and 25998 transitions. Word has length 37 [2021-11-03 04:53:28,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:28,826 INFO L470 AbstractCegarLoop]: Abstraction has 20542 states and 25998 transitions. [2021-11-03 04:53:28,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:28,826 INFO L276 IsEmpty]: Start isEmpty. Operand 20542 states and 25998 transitions. [2021-11-03 04:53:28,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 04:53:28,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:28,827 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:53:28,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-03 04:53:29,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:53:29,031 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr141ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:53:29,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:29,032 INFO L85 PathProgramCache]: Analyzing trace with hash -962714917, now seen corresponding path program 1 times [2021-11-03 04:53:29,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:53:29,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085559434] [2021-11-03 04:53:29,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:29,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:53:29,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:53:29,036 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:53:29,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:53:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:33,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:53:33,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:34,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:34,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:53:34,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085559434] [2021-11-03 04:53:34,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085559434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:34,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:53:34,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:53:34,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948383744] [2021-11-03 04:53:34,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:53:34,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:53:34,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:53:34,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:53:34,837 INFO L87 Difference]: Start difference. First operand 20542 states and 25998 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-03 04:53:37,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:37,169 INFO L93 Difference]: Finished difference Result 20542 states and 25998 transitions. [2021-11-03 04:53:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:53:37,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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 39 [2021-11-03 04:53:37,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:37,203 INFO L225 Difference]: With dead ends: 20542 [2021-11-03 04:53:37,204 INFO L226 Difference]: Without dead ends: 20538 [2021-11-03 04:53:37,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:53:37,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20538 states. [2021-11-03 04:53:38,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20538 to 20538. [2021-11-03 04:53:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20538 states, 20381 states have (on average 1.2754035621412099) internal successors, (25994), 20537 states have internal predecessors, (25994), 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) [2021-11-03 04:53:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20538 states to 20538 states and 25994 transitions. [2021-11-03 04:53:38,856 INFO L78 Accepts]: Start accepts. Automaton has 20538 states and 25994 transitions. Word has length 39 [2021-11-03 04:53:38,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:38,856 INFO L470 AbstractCegarLoop]: Abstraction has 20538 states and 25994 transitions. [2021-11-03 04:53:38,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-03 04:53:38,856 INFO L276 IsEmpty]: Start isEmpty. Operand 20538 states and 25994 transitions. [2021-11-03 04:53:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 04:53:38,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:38,857 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:53:38,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-03 04:53:39,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:53:39,059 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr142ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:53:39,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1749491618, now seen corresponding path program 1 times [2021-11-03 04:53:39,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:53:39,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449081681] [2021-11-03 04:53:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:39,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:53:39,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:53:39,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:53:39,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:53:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:43,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:53:43,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:43,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:44,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:53:44,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449081681] [2021-11-03 04:53:44,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449081681] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:44,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:53:44,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:53:44,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375192885] [2021-11-03 04:53:44,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:53:44,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:53:44,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:53:44,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:53:44,728 INFO L87 Difference]: Start difference. First operand 20538 states and 25994 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:47,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:47,392 INFO L93 Difference]: Finished difference Result 20538 states and 25994 transitions. [2021-11-03 04:53:47,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:53:47,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-03 04:53:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:47,424 INFO L225 Difference]: With dead ends: 20538 [2021-11-03 04:53:47,424 INFO L226 Difference]: Without dead ends: 20534 [2021-11-03 04:53:47,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:53:47,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20534 states. [2021-11-03 04:53:48,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20534 to 20534. [2021-11-03 04:53:48,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20534 states, 20379 states have (on average 1.2753324500711516) internal successors, (25990), 20533 states have internal predecessors, (25990), 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) [2021-11-03 04:53:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20534 states to 20534 states and 25990 transitions. [2021-11-03 04:53:48,967 INFO L78 Accepts]: Start accepts. Automaton has 20534 states and 25990 transitions. Word has length 41 [2021-11-03 04:53:48,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:48,967 INFO L470 AbstractCegarLoop]: Abstraction has 20534 states and 25990 transitions. [2021-11-03 04:53:48,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:53:48,968 INFO L276 IsEmpty]: Start isEmpty. Operand 20534 states and 25990 transitions. [2021-11-03 04:53:48,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 04:53:48,969 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:48,969 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:53:49,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:53:49,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:53:49,171 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr143ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:53:49,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1927656863, now seen corresponding path program 1 times [2021-11-03 04:53:49,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:53:49,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878415646] [2021-11-03 04:53:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:49,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:53:49,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:53:49,176 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:53:49,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:53:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:53:53,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:53:53,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:53:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:54,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:53:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:53:55,044 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:53:55,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878415646] [2021-11-03 04:53:55,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878415646] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:53:55,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:53:55,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:53:55,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834725267] [2021-11-03 04:53:55,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:53:55,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:53:55,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:53:55,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:53:55,046 INFO L87 Difference]: Start difference. First operand 20534 states and 25990 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-03 04:53:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:53:56,948 INFO L93 Difference]: Finished difference Result 20534 states and 25990 transitions. [2021-11-03 04:53:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:53:56,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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 43 [2021-11-03 04:53:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:53:56,978 INFO L225 Difference]: With dead ends: 20534 [2021-11-03 04:53:56,978 INFO L226 Difference]: Without dead ends: 20530 [2021-11-03 04:53:56,985 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:53:57,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20530 states. [2021-11-03 04:53:58,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20530 to 20530. [2021-11-03 04:53:58,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20530 states, 20377 states have (on average 1.2752613240418118) internal successors, (25986), 20529 states have internal predecessors, (25986), 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) [2021-11-03 04:53:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20530 states to 20530 states and 25986 transitions. [2021-11-03 04:53:58,470 INFO L78 Accepts]: Start accepts. Automaton has 20530 states and 25986 transitions. Word has length 43 [2021-11-03 04:53:58,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:53:58,471 INFO L470 AbstractCegarLoop]: Abstraction has 20530 states and 25986 transitions. [2021-11-03 04:53:58,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-03 04:53:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 20530 states and 25986 transitions. [2021-11-03 04:53:58,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 04:53:58,472 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:53:58,472 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:53:58,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:53:58,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:53:58,673 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr144ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:53:58,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:53:58,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1345765148, now seen corresponding path program 1 times [2021-11-03 04:53:58,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:53:58,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945320079] [2021-11-03 04:53:58,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:53:58,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:53:58,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:53:58,678 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:53:58,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:54:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:54:03,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:54:03,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:54:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:04,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:54:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:05,009 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:54:05,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945320079] [2021-11-03 04:54:05,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945320079] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:54:05,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:54:05,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:54:05,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436027044] [2021-11-03 04:54:05,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:54:05,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:54:05,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:54:05,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:54:05,012 INFO L87 Difference]: Start difference. First operand 20530 states and 25986 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2021-11-03 04:54:11,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:54:11,476 INFO L93 Difference]: Finished difference Result 20530 states and 25986 transitions. [2021-11-03 04:54:11,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:54:11,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 45 [2021-11-03 04:54:11,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:54:11,508 INFO L225 Difference]: With dead ends: 20530 [2021-11-03 04:54:11,508 INFO L226 Difference]: Without dead ends: 20526 [2021-11-03 04:54:11,515 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:54:11,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20526 states. [2021-11-03 04:54:12,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20526 to 20526. [2021-11-03 04:54:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20526 states, 20375 states have (on average 1.2751901840490798) internal successors, (25982), 20525 states have internal predecessors, (25982), 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) [2021-11-03 04:54:13,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20526 states to 20526 states and 25982 transitions. [2021-11-03 04:54:13,027 INFO L78 Accepts]: Start accepts. Automaton has 20526 states and 25982 transitions. Word has length 45 [2021-11-03 04:54:13,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:54:13,028 INFO L470 AbstractCegarLoop]: Abstraction has 20526 states and 25982 transitions. [2021-11-03 04:54:13,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2021-11-03 04:54:13,028 INFO L276 IsEmpty]: Start isEmpty. Operand 20526 states and 25982 transitions. [2021-11-03 04:54:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 04:54:13,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:54:13,030 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:54:13,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:54:13,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:54:13,232 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr145ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:54:13,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:54:13,233 INFO L85 PathProgramCache]: Analyzing trace with hash -493575193, now seen corresponding path program 1 times [2021-11-03 04:54:13,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:54:13,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034787357] [2021-11-03 04:54:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:54:13,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:54:13,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:54:13,238 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:54:13,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:54:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:54:17,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:54:17,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:54:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:18,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:54:19,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:19,501 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:54:19,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034787357] [2021-11-03 04:54:19,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034787357] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:54:19,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:54:19,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:54:19,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954073197] [2021-11-03 04:54:19,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:54:19,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:54:19,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:54:19,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:54:19,504 INFO L87 Difference]: Start difference. First operand 20526 states and 25982 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-11-03 04:54:21,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:54:21,645 INFO L93 Difference]: Finished difference Result 20526 states and 25982 transitions. [2021-11-03 04:54:21,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:54:21,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 47 [2021-11-03 04:54:21,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:54:21,677 INFO L225 Difference]: With dead ends: 20526 [2021-11-03 04:54:21,677 INFO L226 Difference]: Without dead ends: 20522 [2021-11-03 04:54:21,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:54:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20522 states. [2021-11-03 04:54:23,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20522 to 20522. [2021-11-03 04:54:23,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20522 states, 20373 states have (on average 1.275119030088843) internal successors, (25978), 20521 states have internal predecessors, (25978), 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) [2021-11-03 04:54:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20522 states to 20522 states and 25978 transitions. [2021-11-03 04:54:23,345 INFO L78 Accepts]: Start accepts. Automaton has 20522 states and 25978 transitions. Word has length 47 [2021-11-03 04:54:23,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:54:23,345 INFO L470 AbstractCegarLoop]: Abstraction has 20522 states and 25978 transitions. [2021-11-03 04:54:23,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-11-03 04:54:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 20522 states and 25978 transitions. [2021-11-03 04:54:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:54:23,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:54:23,347 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:54:23,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:54:23,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:54:23,551 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr146ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:54:23,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:54:23,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1877781654, now seen corresponding path program 1 times [2021-11-03 04:54:23,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:54:23,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865244739] [2021-11-03 04:54:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:54:23,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:54:23,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:54:23,554 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:54:23,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:54:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:54:27,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:54:27,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:54:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:28,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:54:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:29,035 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:54:29,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865244739] [2021-11-03 04:54:29,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865244739] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:54:29,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:54:29,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:54:29,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944215257] [2021-11-03 04:54:29,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:54:29,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:54:29,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:54:29,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:54:29,037 INFO L87 Difference]: Start difference. First operand 20522 states and 25978 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-11-03 04:54:31,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:54:31,059 INFO L93 Difference]: Finished difference Result 20522 states and 25978 transitions. [2021-11-03 04:54:31,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:54:31,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 49 [2021-11-03 04:54:31,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:54:31,084 INFO L225 Difference]: With dead ends: 20522 [2021-11-03 04:54:31,084 INFO L226 Difference]: Without dead ends: 20518 [2021-11-03 04:54:31,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:54:31,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20518 states. [2021-11-03 04:54:32,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20518 to 20518. [2021-11-03 04:54:32,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20518 states, 20371 states have (on average 1.2750478621569878) internal successors, (25974), 20517 states have internal predecessors, (25974), 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) [2021-11-03 04:54:32,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20518 states to 20518 states and 25974 transitions. [2021-11-03 04:54:32,725 INFO L78 Accepts]: Start accepts. Automaton has 20518 states and 25974 transitions. Word has length 49 [2021-11-03 04:54:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:54:32,726 INFO L470 AbstractCegarLoop]: Abstraction has 20518 states and 25974 transitions. [2021-11-03 04:54:32,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-11-03 04:54:32,726 INFO L276 IsEmpty]: Start isEmpty. Operand 20518 states and 25974 transitions. [2021-11-03 04:54:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 04:54:32,727 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:54:32,735 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:54:32,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:54:32,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:54:32,943 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr147ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:54:32,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:54:32,944 INFO L85 PathProgramCache]: Analyzing trace with hash -660328595, now seen corresponding path program 1 times [2021-11-03 04:54:32,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:54:32,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755344733] [2021-11-03 04:54:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:54:32,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:54:32,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:54:32,948 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:54:32,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:54:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:54:37,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:54:37,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:54:38,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:38,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:54:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:39,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:54:39,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755344733] [2021-11-03 04:54:39,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755344733] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:54:39,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:54:39,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:54:39,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648931352] [2021-11-03 04:54:39,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:54:39,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:54:39,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:54:39,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:54:39,434 INFO L87 Difference]: Start difference. First operand 20518 states and 25974 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-11-03 04:54:41,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:54:41,768 INFO L93 Difference]: Finished difference Result 20518 states and 25974 transitions. [2021-11-03 04:54:41,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:54:41,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 51 [2021-11-03 04:54:41,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:54:41,798 INFO L225 Difference]: With dead ends: 20518 [2021-11-03 04:54:41,798 INFO L226 Difference]: Without dead ends: 20514 [2021-11-03 04:54:41,804 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:54:41,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20514 states. [2021-11-03 04:54:43,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20514 to 20514. [2021-11-03 04:54:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20514 states, 20369 states have (on average 1.2749766802493987) internal successors, (25970), 20513 states have internal predecessors, (25970), 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) [2021-11-03 04:54:43,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20514 states to 20514 states and 25970 transitions. [2021-11-03 04:54:43,467 INFO L78 Accepts]: Start accepts. Automaton has 20514 states and 25970 transitions. Word has length 51 [2021-11-03 04:54:43,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:54:43,468 INFO L470 AbstractCegarLoop]: Abstraction has 20514 states and 25970 transitions. [2021-11-03 04:54:43,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-11-03 04:54:43,468 INFO L276 IsEmpty]: Start isEmpty. Operand 20514 states and 25970 transitions. [2021-11-03 04:54:43,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 04:54:43,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:54:43,469 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:54:43,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:54:43,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:54:43,670 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr148ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:54:43,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:54:43,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1080956912, now seen corresponding path program 1 times [2021-11-03 04:54:43,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:54:43,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558716204] [2021-11-03 04:54:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:54:43,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:54:43,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:54:43,674 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:54:43,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:54:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:54:47,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:54:47,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:54:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:48,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:54:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:49,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:54:49,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558716204] [2021-11-03 04:54:49,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558716204] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:54:49,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:54:49,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:54:49,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815541620] [2021-11-03 04:54:49,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:54:49,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:54:49,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:54:49,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:54:49,373 INFO L87 Difference]: Start difference. First operand 20514 states and 25970 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-11-03 04:54:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:54:51,432 INFO L93 Difference]: Finished difference Result 20514 states and 25970 transitions. [2021-11-03 04:54:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:54:51,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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 53 [2021-11-03 04:54:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:54:51,462 INFO L225 Difference]: With dead ends: 20514 [2021-11-03 04:54:51,462 INFO L226 Difference]: Without dead ends: 20510 [2021-11-03 04:54:51,468 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:54:51,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20510 states. [2021-11-03 04:54:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20510 to 20510. [2021-11-03 04:54:53,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20510 states, 20367 states have (on average 1.274905484361958) internal successors, (25966), 20509 states have internal predecessors, (25966), 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) [2021-11-03 04:54:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20510 states to 20510 states and 25966 transitions. [2021-11-03 04:54:53,403 INFO L78 Accepts]: Start accepts. Automaton has 20510 states and 25966 transitions. Word has length 53 [2021-11-03 04:54:53,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:54:53,403 INFO L470 AbstractCegarLoop]: Abstraction has 20510 states and 25966 transitions. [2021-11-03 04:54:53,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-11-03 04:54:53,404 INFO L276 IsEmpty]: Start isEmpty. Operand 20510 states and 25966 transitions. [2021-11-03 04:54:53,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:54:53,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:54:53,405 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:54:53,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:54:53,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:54:53,606 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr150ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:54:53,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:54:53,606 INFO L85 PathProgramCache]: Analyzing trace with hash 877542181, now seen corresponding path program 1 times [2021-11-03 04:54:53,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:54:53,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554229146] [2021-11-03 04:54:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:54:53,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:54:53,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:54:53,610 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:54:53,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:54:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:54:58,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 04:54:58,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:54:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:54:59,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:55:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:01,493 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:55:01,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554229146] [2021-11-03 04:55:01,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554229146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:55:01,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:55:01,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 17 [2021-11-03 04:55:01,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457095982] [2021-11-03 04:55:01,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:55:01,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:55:01,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:55:01,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:55:01,496 INFO L87 Difference]: Start difference. First operand 20510 states and 25966 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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) [2021-11-03 04:55:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:55:10,246 INFO L93 Difference]: Finished difference Result 20913 states and 26438 transitions. [2021-11-03 04:55:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:55:10,247 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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 55 [2021-11-03 04:55:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:55:10,273 INFO L225 Difference]: With dead ends: 20913 [2021-11-03 04:55:10,273 INFO L226 Difference]: Without dead ends: 20220 [2021-11-03 04:55:10,280 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:55:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20220 states. [2021-11-03 04:55:12,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20220 to 20182. [2021-11-03 04:55:12,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20182 states, 20039 states have (on average 1.2757123608962524) internal successors, (25564), 20181 states have internal predecessors, (25564), 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) [2021-11-03 04:55:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20182 states to 20182 states and 25564 transitions. [2021-11-03 04:55:12,110 INFO L78 Accepts]: Start accepts. Automaton has 20182 states and 25564 transitions. Word has length 55 [2021-11-03 04:55:12,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:55:12,111 INFO L470 AbstractCegarLoop]: Abstraction has 20182 states and 25564 transitions. [2021-11-03 04:55:12,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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) [2021-11-03 04:55:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 20182 states and 25564 transitions. [2021-11-03 04:55:12,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:55:12,112 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:55:12,112 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:55:12,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:55:12,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:55:12,315 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr149ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:55:12,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:55:12,316 INFO L85 PathProgramCache]: Analyzing trace with hash -580915981, now seen corresponding path program 1 times [2021-11-03 04:55:12,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:55:12,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966674298] [2021-11-03 04:55:12,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:55:12,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:55:12,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:55:12,320 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:55:12,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 04:55:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:55:16,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:55:16,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:55:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:18,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:55:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:19,104 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:55:19,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966674298] [2021-11-03 04:55:19,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966674298] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:55:19,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:55:19,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:55:19,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974417063] [2021-11-03 04:55:19,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:55:19,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:55:19,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:55:19,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:55:19,109 INFO L87 Difference]: Start difference. First operand 20182 states and 25564 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-03 04:55:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:55:21,625 INFO L93 Difference]: Finished difference Result 20182 states and 25564 transitions. [2021-11-03 04:55:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:55:21,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 55 [2021-11-03 04:55:21,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:55:21,652 INFO L225 Difference]: With dead ends: 20182 [2021-11-03 04:55:21,652 INFO L226 Difference]: Without dead ends: 20112 [2021-11-03 04:55:21,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:55:21,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20112 states. [2021-11-03 04:55:23,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20112 to 20112. [2021-11-03 04:55:23,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20112 states, 19971 states have (on average 1.2763507085273647) internal successors, (25490), 20111 states have internal predecessors, (25490), 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) [2021-11-03 04:55:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20112 states to 20112 states and 25490 transitions. [2021-11-03 04:55:23,397 INFO L78 Accepts]: Start accepts. Automaton has 20112 states and 25490 transitions. Word has length 55 [2021-11-03 04:55:23,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:55:23,397 INFO L470 AbstractCegarLoop]: Abstraction has 20112 states and 25490 transitions. [2021-11-03 04:55:23,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-03 04:55:23,398 INFO L276 IsEmpty]: Start isEmpty. Operand 20112 states and 25490 transitions. [2021-11-03 04:55:23,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 04:55:23,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:55:23,399 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:55:23,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-03 04:55:23,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:55:23,600 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:55:23,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:55:23,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1744313117, now seen corresponding path program 1 times [2021-11-03 04:55:23,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:55:23,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524821429] [2021-11-03 04:55:23,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:55:23,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:55:23,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:55:23,604 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:55:23,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 04:55:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:55:27,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 04:55:27,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:55:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:28,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:55:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:29,488 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:55:29,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524821429] [2021-11-03 04:55:29,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524821429] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:55:29,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:55:29,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-03 04:55:29,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615433720] [2021-11-03 04:55:29,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:55:29,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:55:29,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:55:29,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:55:29,491 INFO L87 Difference]: Start difference. First operand 20112 states and 25490 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-11-03 04:55:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:55:54,729 INFO L93 Difference]: Finished difference Result 47694 states and 60471 transitions. [2021-11-03 04:55:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:55:54,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 61 [2021-11-03 04:55:54,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:55:54,773 INFO L225 Difference]: With dead ends: 47694 [2021-11-03 04:55:54,773 INFO L226 Difference]: Without dead ends: 27607 [2021-11-03 04:55:54,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:55:54,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27607 states. [2021-11-03 04:55:57,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27607 to 20112. [2021-11-03 04:55:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20112 states, 19971 states have (on average 1.276300635922087) internal successors, (25489), 20111 states have internal predecessors, (25489), 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) [2021-11-03 04:55:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20112 states to 20112 states and 25489 transitions. [2021-11-03 04:55:57,261 INFO L78 Accepts]: Start accepts. Automaton has 20112 states and 25489 transitions. Word has length 61 [2021-11-03 04:55:57,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:55:57,261 INFO L470 AbstractCegarLoop]: Abstraction has 20112 states and 25489 transitions. [2021-11-03 04:55:57,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-11-03 04:55:57,262 INFO L276 IsEmpty]: Start isEmpty. Operand 20112 states and 25489 transitions. [2021-11-03 04:55:57,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 04:55:57,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:55:57,263 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:55:57,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-03 04:55:57,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:55:57,479 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:55:57,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:55:57,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1204564262, now seen corresponding path program 1 times [2021-11-03 04:55:57,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:55:57,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771797938] [2021-11-03 04:55:57,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:55:57,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:55:57,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:55:57,484 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:55:57,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-03 04:56:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:02,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 04:56:02,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:03,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:03,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:05,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:05,023 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:05,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771797938] [2021-11-03 04:56:05,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771797938] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:05,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:05,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 17 [2021-11-03 04:56:05,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922037849] [2021-11-03 04:56:05,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:56:05,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:05,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:56:05,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:56:05,025 INFO L87 Difference]: Start difference. First operand 20112 states and 25489 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 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) [2021-11-03 04:56:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:31,589 INFO L93 Difference]: Finished difference Result 66586 states and 84309 transitions. [2021-11-03 04:56:31,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 04:56:31,589 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 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 61 [2021-11-03 04:56:31,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:31,671 INFO L225 Difference]: With dead ends: 66586 [2021-11-03 04:56:31,671 INFO L226 Difference]: Without dead ends: 46508 [2021-11-03 04:56:31,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=392, Invalid=1090, Unknown=0, NotChecked=0, Total=1482 [2021-11-03 04:56:31,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46508 states. [2021-11-03 04:56:35,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46508 to 20130. [2021-11-03 04:56:35,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20130 states, 19989 states have (on average 1.276051828505678) internal successors, (25507), 20129 states have internal predecessors, (25507), 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) [2021-11-03 04:56:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20130 states to 20130 states and 25507 transitions. [2021-11-03 04:56:35,140 INFO L78 Accepts]: Start accepts. Automaton has 20130 states and 25507 transitions. Word has length 61 [2021-11-03 04:56:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:35,141 INFO L470 AbstractCegarLoop]: Abstraction has 20130 states and 25507 transitions. [2021-11-03 04:56:35,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 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) [2021-11-03 04:56:35,141 INFO L276 IsEmpty]: Start isEmpty. Operand 20130 states and 25507 transitions. [2021-11-03 04:56:35,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 04:56:35,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:35,142 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:35,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:35,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:35,359 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr150ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:56:35,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:35,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1446733593, now seen corresponding path program 1 times [2021-11-03 04:56:35,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:35,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276645673] [2021-11-03 04:56:35,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:35,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:35,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:35,362 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:35,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 04:56:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:39,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:56:39,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:42,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:42,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:43,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:43,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276645673] [2021-11-03 04:56:43,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276645673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:43,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:43,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:56:43,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501314485] [2021-11-03 04:56:43,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:56:43,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:43,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:56:43,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:56:43,961 INFO L87 Difference]: Start difference. First operand 20130 states and 25507 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-11-03 04:56:48,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:48,918 INFO L93 Difference]: Finished difference Result 34259 states and 43320 transitions. [2021-11-03 04:56:48,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:56:48,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 81 [2021-11-03 04:56:48,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:48,965 INFO L225 Difference]: With dead ends: 34259 [2021-11-03 04:56:48,965 INFO L226 Difference]: Without dead ends: 33911 [2021-11-03 04:56:48,971 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:56:49,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33911 states. [2021-11-03 04:56:53,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33911 to 27674. [2021-11-03 04:56:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27674 states, 27533 states have (on average 1.2752333563360332) internal successors, (35111), 27673 states have internal predecessors, (35111), 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) [2021-11-03 04:56:53,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27674 states to 27674 states and 35111 transitions. [2021-11-03 04:56:53,568 INFO L78 Accepts]: Start accepts. Automaton has 27674 states and 35111 transitions. Word has length 81 [2021-11-03 04:56:53,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:53,568 INFO L470 AbstractCegarLoop]: Abstraction has 27674 states and 35111 transitions. [2021-11-03 04:56:53,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-11-03 04:56:53,569 INFO L276 IsEmpty]: Start isEmpty. Operand 27674 states and 35111 transitions. [2021-11-03 04:56:53,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 04:56:53,570 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:53,571 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:53,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-03 04:56:53,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:53,771 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:56:53,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1388742916, now seen corresponding path program 1 times [2021-11-03 04:56:53,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:53,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697521557] [2021-11-03 04:56:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:53,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:53,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:53,776 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:53,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-03 04:56:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:58,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:56:58,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:59,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:00,168 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:00,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697521557] [2021-11-03 04:57:00,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697521557] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:00,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:57:00,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:57:00,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736040577] [2021-11-03 04:57:00,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:57:00,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:00,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:57:00,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:57:00,171 INFO L87 Difference]: Start difference. First operand 27674 states and 35111 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2021-11-03 04:57:47,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:47,723 INFO L93 Difference]: Finished difference Result 169994 states and 215800 transitions. [2021-11-03 04:57:47,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:57:47,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 90 [2021-11-03 04:57:47,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:48,189 INFO L225 Difference]: With dead ends: 169994 [2021-11-03 04:57:48,189 INFO L226 Difference]: Without dead ends: 142358 [2021-11-03 04:57:48,251 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:57:48,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142358 states. [2021-11-03 04:57:53,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142358 to 27680. [2021-11-03 04:57:53,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27680 states, 27539 states have (on average 1.2751733904644322) internal successors, (35117), 27679 states have internal predecessors, (35117), 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) [2021-11-03 04:57:53,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27680 states to 27680 states and 35117 transitions. [2021-11-03 04:57:53,930 INFO L78 Accepts]: Start accepts. Automaton has 27680 states and 35117 transitions. Word has length 90 [2021-11-03 04:57:53,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:53,930 INFO L470 AbstractCegarLoop]: Abstraction has 27680 states and 35117 transitions. [2021-11-03 04:57:53,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2021-11-03 04:57:53,930 INFO L276 IsEmpty]: Start isEmpty. Operand 27680 states and 35117 transitions. [2021-11-03 04:57:53,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 04:57:53,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:53,932 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:53,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:54,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:54,147 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:57:54,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:54,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1648156513, now seen corresponding path program 1 times [2021-11-03 04:57:54,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:54,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040450877] [2021-11-03 04:57:54,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:54,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:54,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:54,150 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:54,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-03 04:57:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:58,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:57:58,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:59,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:59,690 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:59,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040450877] [2021-11-03 04:57:59,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040450877] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:59,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:57:59,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:57:59,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864804818] [2021-11-03 04:57:59,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:57:59,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:59,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:57:59,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:57:59,692 INFO L87 Difference]: Start difference. First operand 27680 states and 35117 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 8 states have internal predecessors, (114), 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) [2021-11-03 04:58:11,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:58:11,602 INFO L93 Difference]: Finished difference Result 77092 states and 97577 transitions. [2021-11-03 04:58:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:58:11,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 8 states have internal predecessors, (114), 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 95 [2021-11-03 04:58:11,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:58:11,673 INFO L225 Difference]: With dead ends: 77092 [2021-11-03 04:58:11,673 INFO L226 Difference]: Without dead ends: 49450 [2021-11-03 04:58:11,702 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:58:11,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49450 states. [2021-11-03 04:58:17,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49450 to 27684. [2021-11-03 04:58:17,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27684 states, 27543 states have (on average 1.2751334277311839) internal successors, (35121), 27683 states have internal predecessors, (35121), 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) [2021-11-03 04:58:17,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27684 states to 27684 states and 35121 transitions. [2021-11-03 04:58:17,333 INFO L78 Accepts]: Start accepts. Automaton has 27684 states and 35121 transitions. Word has length 95 [2021-11-03 04:58:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:58:17,333 INFO L470 AbstractCegarLoop]: Abstraction has 27684 states and 35121 transitions. [2021-11-03 04:58:17,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 8 states have internal predecessors, (114), 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) [2021-11-03 04:58:17,334 INFO L276 IsEmpty]: Start isEmpty. Operand 27684 states and 35121 transitions. [2021-11-03 04:58:17,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-03 04:58:17,337 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:58:17,338 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:58:17,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-03 04:58:17,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:58:17,551 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr92ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:58:17,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:58:17,552 INFO L85 PathProgramCache]: Analyzing trace with hash 5783503, now seen corresponding path program 1 times [2021-11-03 04:58:17,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:58:17,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368405195] [2021-11-03 04:58:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:58:17,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:58:17,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:58:17,555 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:58:17,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-03 04:58:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:58:22,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 2314 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:58:22,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:24,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:25,797 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:58:25,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368405195] [2021-11-03 04:58:25,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368405195] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:58:25,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:58:25,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:58:25,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361221710] [2021-11-03 04:58:25,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:58:25,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:58:25,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:58:25,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:58:25,799 INFO L87 Difference]: Start difference. First operand 27684 states and 35121 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 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) [2021-11-03 04:58:28,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:58:28,494 INFO L93 Difference]: Finished difference Result 28030 states and 35536 transitions. [2021-11-03 04:58:28,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:58:28,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 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 182 [2021-11-03 04:58:28,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:58:28,515 INFO L225 Difference]: With dead ends: 28030 [2021-11-03 04:58:28,516 INFO L226 Difference]: Without dead ends: 18820 [2021-11-03 04:58:28,529 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:58:28,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18820 states. [2021-11-03 04:58:31,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18820 to 18820. [2021-11-03 04:58:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18820 states, 18726 states have (on average 1.274431272028196) internal successors, (23865), 18819 states have internal predecessors, (23865), 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) [2021-11-03 04:58:31,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18820 states to 18820 states and 23865 transitions. [2021-11-03 04:58:31,571 INFO L78 Accepts]: Start accepts. Automaton has 18820 states and 23865 transitions. Word has length 182 [2021-11-03 04:58:31,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:58:31,572 INFO L470 AbstractCegarLoop]: Abstraction has 18820 states and 23865 transitions. [2021-11-03 04:58:31,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 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) [2021-11-03 04:58:31,572 INFO L276 IsEmpty]: Start isEmpty. Operand 18820 states and 23865 transitions. [2021-11-03 04:58:31,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-03 04:58:31,575 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:58:31,575 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-03 04:58:31,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-03 04:58:31,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:58:31,776 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:58:31,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:58:31,776 INFO L85 PathProgramCache]: Analyzing trace with hash -576530317, now seen corresponding path program 1 times [2021-11-03 04:58:31,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:58:31,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136949660] [2021-11-03 04:58:31,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:58:31,779 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:58:31,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:58:31,779 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:58:31,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-03 04:58:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:58:37,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:58:37,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:58:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:39,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:41,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:58:41,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:58:41,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136949660] [2021-11-03 04:58:41,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136949660] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:58:41,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:58:41,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:58:41,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629181825] [2021-11-03 04:58:41,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:58:41,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:58:41,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:58:41,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:58:41,563 INFO L87 Difference]: Start difference. First operand 18820 states and 23865 transitions. Second operand has 8 states, 8 states have (on average 35.75) internal successors, (286), 8 states have internal predecessors, (286), 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) [2021-11-03 04:58:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:58:54,701 INFO L93 Difference]: Finished difference Result 57830 states and 73347 transitions. [2021-11-03 04:58:54,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:58:54,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 35.75) internal successors, (286), 8 states have internal predecessors, (286), 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 209 [2021-11-03 04:58:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:58:54,758 INFO L225 Difference]: With dead ends: 57830 [2021-11-03 04:58:54,758 INFO L226 Difference]: Without dead ends: 39043 [2021-11-03 04:58:54,776 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:58:54,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39043 states. [2021-11-03 04:59:00,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39043 to 37205. [2021-11-03 04:59:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37205 states, 37111 states have (on average 1.2743930371049015) internal successors, (47294), 37204 states have internal predecessors, (47294), 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) [2021-11-03 04:59:00,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37205 states to 37205 states and 47294 transitions. [2021-11-03 04:59:00,757 INFO L78 Accepts]: Start accepts. Automaton has 37205 states and 47294 transitions. Word has length 209 [2021-11-03 04:59:00,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:59:00,757 INFO L470 AbstractCegarLoop]: Abstraction has 37205 states and 47294 transitions. [2021-11-03 04:59:00,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.75) internal successors, (286), 8 states have internal predecessors, (286), 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) [2021-11-03 04:59:00,757 INFO L276 IsEmpty]: Start isEmpty. Operand 37205 states and 47294 transitions. [2021-11-03 04:59:00,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-03 04:59:00,763 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:00,763 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-03 04:59:00,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-03 04:59:00,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:59:00,979 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:59:00,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:00,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2142658897, now seen corresponding path program 1 times [2021-11-03 04:59:00,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:00,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607306519] [2021-11-03 04:59:00,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:00,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:00,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:00,984 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:00,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-03 04:59:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:59:07,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 2472 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:59:07,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:08,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:08,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:59:09,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:09,873 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:59:09,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607306519] [2021-11-03 04:59:09,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607306519] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:59:09,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:59:09,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:59:09,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050774293] [2021-11-03 04:59:09,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:59:09,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:59:09,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:59:09,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:59:09,875 INFO L87 Difference]: Start difference. First operand 37205 states and 47294 transitions. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 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) [2021-11-03 04:59:19,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:19,827 INFO L93 Difference]: Finished difference Result 76970 states and 97743 transitions. [2021-11-03 04:59:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:59:19,828 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-03 04:59:19,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:19,894 INFO L225 Difference]: With dead ends: 76970 [2021-11-03 04:59:19,894 INFO L226 Difference]: Without dead ends: 39854 [2021-11-03 04:59:19,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:59:19,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39854 states. [2021-11-03 04:59:26,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39854 to 37220. [2021-11-03 04:59:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37220 states, 37126 states have (on average 1.2742821742175294) internal successors, (47309), 37219 states have internal predecessors, (47309), 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) [2021-11-03 04:59:26,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37220 states to 37220 states and 47309 transitions. [2021-11-03 04:59:26,450 INFO L78 Accepts]: Start accepts. Automaton has 37220 states and 47309 transitions. Word has length 210 [2021-11-03 04:59:26,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:59:26,451 INFO L470 AbstractCegarLoop]: Abstraction has 37220 states and 47309 transitions. [2021-11-03 04:59:26,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 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) [2021-11-03 04:59:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand 37220 states and 47309 transitions. [2021-11-03 04:59:26,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-03 04:59:26,457 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:26,457 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:59:26,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-03 04:59:26,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:59:26,679 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 164 more)] === [2021-11-03 04:59:26,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:26,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1938571197, now seen corresponding path program 1 times [2021-11-03 04:59:26,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:26,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869108916] [2021-11-03 04:59:26,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:26,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:26,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:26,683 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:26,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b36c5d-cae2-43b6-af4d-4d6e870806c9/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-03 04:59:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:59:32,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 2500 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-03 04:59:32,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:35,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:59:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:38,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:59:38,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869108916] [2021-11-03 04:59:38,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869108916] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:59:38,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:59:38,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-11-03 04:59:38,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795614113] [2021-11-03 04:59:38,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:59:38,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:59:38,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:59:38,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:59:38,435 INFO L87 Difference]: Start difference. First operand 37220 states and 47309 transitions. Second operand has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 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) [2021-11-03 04:59:57,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:57,881 INFO L93 Difference]: Finished difference Result 56040 states and 71170 transitions. [2021-11-03 04:59:57,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:59:57,884 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 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 216 [2021-11-03 04:59:57,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:57,911 INFO L225 Difference]: With dead ends: 56040 [2021-11-03 04:59:57,911 INFO L226 Difference]: Without dead ends: 18909 [2021-11-03 04:59:57,942 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-03 04:59:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18909 states.