./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/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 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:15:02,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:15:02,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:15:02,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:15:02,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:15:02,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:15:02,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:15:02,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:15:02,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:15:02,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:15:02,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:15:02,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:15:02,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:15:02,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:15:02,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:15:02,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:15:02,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:15:02,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:15:02,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:15:02,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:15:02,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:15:02,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:15:02,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:15:02,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:15:02,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:15:02,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:15:02,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:15:02,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:15:02,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:15:02,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:15:02,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:15:02,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:15:02,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:15:02,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:15:02,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:15:02,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:15:02,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:15:02,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:15:02,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:15:02,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:15:02,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:15:02,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:15:02,206 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:15:02,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:15:02,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:15:02,208 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:15:02,208 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:15:02,209 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:15:02,209 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:15:02,210 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:15:02,210 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:15:02,210 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:15:02,211 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:15:02,211 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:15:02,212 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:15:02,212 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:15:02,213 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:15:02,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:15:02,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:15:02,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:15:02,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:15:02,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:15:02,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:15:02,216 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:15:02,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:15:02,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:15:02,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:15:02,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:15:02,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:15:02,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:02,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:15:02,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:15:02,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:15:02,228 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:15:02,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:15:02,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:15:02,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:15:02,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:15:02,229 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 [2021-11-03 04:15:02,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:15:02,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:15:02,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:15:02,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:15:02,552 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:15:02,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-03 04:15:02,619 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/data/516d1afbd/8bfc64e5584045c789a835f223bf3c7b/FLAGfc390c9b3 [2021-11-03 04:15:03,761 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:15:03,762 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-03 04:15:03,847 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/data/516d1afbd/8bfc64e5584045c789a835f223bf3c7b/FLAGfc390c9b3 [2021-11-03 04:15:04,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/data/516d1afbd/8bfc64e5584045c789a835f223bf3c7b [2021-11-03 04:15:04,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:15:04,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:15:04,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:04,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:15:04,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:15:04,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:04" (1/1) ... [2021-11-03 04:15:04,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359d641b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:04, skipping insertion in model container [2021-11-03 04:15:04,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:04" (1/1) ... [2021-11-03 04:15:04,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:15:04,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:15:06,430 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 04:15:06,448 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 04:15:07,627 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-03 04:15:07,635 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-03 04:15:07,636 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-03 04:15:07,636 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-03 04:15:07,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:07,737 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 04:15:07,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12e712a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:07, skipping insertion in model container [2021-11-03 04:15:07,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:07,739 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:15:07,745 INFO L168 Benchmark]: Toolchain (without parser) took 3734.13 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 81.7 MB in the beginning and 83.8 MB in the end (delta: -2.1 MB). Peak memory consumption was 63.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:15:07,746 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 115.3 MB. Free memory is still 88.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:15:07,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3727.24 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 81.4 MB in the beginning and 83.8 MB in the end (delta: -2.4 MB). Peak memory consumption was 63.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:15:07,750 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 115.3 MB. Free memory is still 88.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3727.24 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 81.4 MB in the beginning and 83.8 MB in the end (delta: -2.4 MB). Peak memory consumption was 63.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6377]: 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/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 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:15:10,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:15:10,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:15:10,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:15:10,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:15:10,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:15:10,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:15:10,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:15:10,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:15:10,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:15:10,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:15:10,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:15:10,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:15:10,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:15:10,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:15:10,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:15:10,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:15:10,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:15:10,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:15:10,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:15:10,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:15:10,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:15:10,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:15:10,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:15:10,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:15:10,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:15:10,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:15:10,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:15:10,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:15:10,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:15:10,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:15:10,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:15:10,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:15:10,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:15:10,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:15:10,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:15:10,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:15:10,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:15:10,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:15:10,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:15:10,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:15:10,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:15:10,755 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:15:10,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:15:10,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:15:10,757 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:15:10,758 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:15:10,758 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:15:10,758 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:15:10,759 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:15:10,759 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:15:10,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:15:10,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:15:10,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:15:10,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:15:10,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:15:10,763 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:15:10,764 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:15:10,764 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:15:10,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:15:10,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:15:10,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:15:10,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:15:10,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:15:10,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:15:10,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:10,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:15:10,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:15:10,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:15:10,767 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:15:10,768 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:15:10,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:15:10,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:15:10,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:15:10,769 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 [2021-11-03 04:15:11,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:15:11,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:15:11,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:15:11,388 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:15:11,389 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:15:11,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-03 04:15:11,469 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/data/52a063347/7ba04ed9c9f24668867bfcf4b72f5ab9/FLAGf948c75a5 [2021-11-03 04:15:12,648 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:15:12,650 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-03 04:15:12,766 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/data/52a063347/7ba04ed9c9f24668867bfcf4b72f5ab9/FLAGf948c75a5 [2021-11-03 04:15:12,920 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/data/52a063347/7ba04ed9c9f24668867bfcf4b72f5ab9 [2021-11-03 04:15:12,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:15:12,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:15:12,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:12,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:15:12,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:15:12,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:12" (1/1) ... [2021-11-03 04:15:12,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26edc767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:12, skipping insertion in model container [2021-11-03 04:15:12,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:12" (1/1) ... [2021-11-03 04:15:12,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:15:13,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:15:16,556 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-03 04:15:16,560 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-03 04:15:16,561 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-03 04:15:16,561 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-03 04:15:16,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:16,683 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:15:16,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:15:17,309 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-03 04:15:17,311 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-03 04:15:17,311 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-03 04:15:17,312 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-03 04:15:17,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:17,365 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:15:17,904 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-03 04:15:17,905 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-03 04:15:17,905 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-03 04:15:17,906 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_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-03 04:15:17,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:18,283 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:15:18,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:18 WrapperNode [2021-11-03 04:15:18,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:18,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:15:18,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:15:18,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:15:18,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:18" (1/1) ... [2021-11-03 04:15:18,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:18" (1/1) ... [2021-11-03 04:15:19,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:15:19,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:15:19,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:15:19,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:15:19,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:18" (1/1) ... [2021-11-03 04:15:19,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:18" (1/1) ... [2021-11-03 04:15:19,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:18" (1/1) ... [2021-11-03 04:15:19,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:18" (1/1) ... [2021-11-03 04:15:19,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:18" (1/1) ... [2021-11-03 04:15:19,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:18" (1/1) ... [2021-11-03 04:15:19,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:18" (1/1) ... [2021-11-03 04:15:19,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:15:19,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:15:19,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:15:19,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:15:19,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:18" (1/1) ... [2021-11-03 04:15:19,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:19,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:15:19,867 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:15:19,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:15:19,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:15:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 04:15:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:15:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:15:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 04:15:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:15:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:15:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:15:19,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:15:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:15:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:15:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:15:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 04:15:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:15:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:15:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:15:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:15:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 04:15:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:15:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:15:19,931 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2021-11-03 04:15:19,931 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2021-11-03 04:17:28,971 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0bv32; [2021-11-03 04:17:28,972 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0bv32; [2021-11-03 04:17:28,972 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0bv32; [2021-11-03 04:17:28,972 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0bv32; [2021-11-03 04:17:28,972 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0bv32; [2021-11-03 04:17:28,973 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0bv32; [2021-11-03 04:17:28,974 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 04:17:30,870 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:17:30,870 INFO L299 CfgBuilder]: Removed 3411 assume(true) statements. [2021-11-03 04:17:30,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:17:30 BoogieIcfgContainer [2021-11-03 04:17:30,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:17:30,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:17:30,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:17:30,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:17:30,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:15:12" (1/3) ... [2021-11-03 04:17:30,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b6b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:17:30, skipping insertion in model container [2021-11-03 04:17:30,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:18" (2/3) ... [2021-11-03 04:17:30,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b6b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:17:30, skipping insertion in model container [2021-11-03 04:17:30,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:17:30" (3/3) ... [2021-11-03 04:17:30,883 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-03 04:17:30,888 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:17:30,889 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-11-03 04:17:30,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:17:30,955 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 04:17:30,955 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-11-03 04:17:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 3031 states, 2960 states have (on average 1.3179054054054054) internal successors, (3901), 3026 states have internal predecessors, (3901), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-03 04:17:31,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 04:17:31,031 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:31,032 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] [2021-11-03 04:17:31,032 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:17:31,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:31,037 INFO L85 PathProgramCache]: Analyzing trace with hash 619962046, now seen corresponding path program 1 times [2021-11-03 04:17:31,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:31,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448934105] [2021-11-03 04:17:31,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:31,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:31,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:31,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:31,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:17:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:36,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2658 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:17:36,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:36,948 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 04:17:36,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:37,168 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 04:17:37,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:37,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448934105] [2021-11-03 04:17:37,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448934105] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:37,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:37,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:17:37,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189792016] [2021-11-03 04:17:37,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:17:37,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:37,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:17:37,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:17:37,198 INFO L87 Difference]: Start difference. First operand has 3031 states, 2960 states have (on average 1.3179054054054054) internal successors, (3901), 3026 states have internal predecessors, (3901), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 04:17:40,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:40,458 INFO L93 Difference]: Finished difference Result 11326 states and 14621 transitions. [2021-11-03 04:17:40,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:17:40,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 54 [2021-11-03 04:17:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:40,531 INFO L225 Difference]: With dead ends: 11326 [2021-11-03 04:17:40,531 INFO L226 Difference]: Without dead ends: 8115 [2021-11-03 04:17:40,550 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 104 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 04:17:40,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2021-11-03 04:17:40,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 7991. [2021-11-03 04:17:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7991 states, 7912 states have (on average 1.268958543983822) internal successors, (10040), 7978 states have internal predecessors, (10040), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-03 04:17:40,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7991 states to 7991 states and 10058 transitions. [2021-11-03 04:17:40,966 INFO L78 Accepts]: Start accepts. Automaton has 7991 states and 10058 transitions. Word has length 54 [2021-11-03 04:17:40,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:40,967 INFO L470 AbstractCegarLoop]: Abstraction has 7991 states and 10058 transitions. [2021-11-03 04:17:40,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 04:17:40,968 INFO L276 IsEmpty]: Start isEmpty. Operand 7991 states and 10058 transitions. [2021-11-03 04:17:40,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:17:40,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:40,982 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] [2021-11-03 04:17:41,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:41,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:41,199 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:17:41,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1150160792, now seen corresponding path program 1 times [2021-11-03 04:17:41,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:41,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686388732] [2021-11-03 04:17:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:41,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:41,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:41,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:41,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:17:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:46,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:17:46,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:47,188 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 04:17:47,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:47,422 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 04:17:47,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:47,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686388732] [2021-11-03 04:17:47,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686388732] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:47,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:47,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:17:47,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757589362] [2021-11-03 04:17:47,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:17:47,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:17:47,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:17:47,426 INFO L87 Difference]: Start difference. First operand 7991 states and 10058 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 04:17:50,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:50,401 INFO L93 Difference]: Finished difference Result 14734 states and 18563 transitions. [2021-11-03 04:17:50,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:17:50,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 59 [2021-11-03 04:17:50,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:50,444 INFO L225 Difference]: With dead ends: 14734 [2021-11-03 04:17:50,444 INFO L226 Difference]: Without dead ends: 6843 [2021-11-03 04:17:50,464 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 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 04:17:50,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6843 states. [2021-11-03 04:17:50,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6843 to 6843. [2021-11-03 04:17:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6843 states, 6768 states have (on average 1.2687647754137117) internal successors, (8587), 6830 states have internal predecessors, (8587), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-03 04:17:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6843 states to 6843 states and 8605 transitions. [2021-11-03 04:17:50,971 INFO L78 Accepts]: Start accepts. Automaton has 6843 states and 8605 transitions. Word has length 59 [2021-11-03 04:17:50,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:50,972 INFO L470 AbstractCegarLoop]: Abstraction has 6843 states and 8605 transitions. [2021-11-03 04:17:50,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 04:17:50,972 INFO L276 IsEmpty]: Start isEmpty. Operand 6843 states and 8605 transitions. [2021-11-03 04:17:50,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:17:50,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:50,974 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] [2021-11-03 04:17:51,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:51,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:51,199 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:17:51,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:51,199 INFO L85 PathProgramCache]: Analyzing trace with hash -148878727, now seen corresponding path program 1 times [2021-11-03 04:17:51,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:51,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985633578] [2021-11-03 04:17:51,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:51,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:51,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:51,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:51,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:17:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:56,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:17:56,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:56,742 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 04:17:56,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:56,982 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 04:17:56,983 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:56,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985633578] [2021-11-03 04:17:56,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985633578] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:56,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:56,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:17:56,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391050538] [2021-11-03 04:17:56,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:17:56,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:56,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:17:56,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:17:56,985 INFO L87 Difference]: Start difference. First operand 6843 states and 8605 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 04:18:00,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:00,294 INFO L93 Difference]: Finished difference Result 18228 states and 22949 transitions. [2021-11-03 04:18:00,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:18:00,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-03 04:18:00,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:00,368 INFO L225 Difference]: With dead ends: 18228 [2021-11-03 04:18:00,368 INFO L226 Difference]: Without dead ends: 11485 [2021-11-03 04:18:00,385 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 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 04:18:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11485 states. [2021-11-03 04:18:00,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11485 to 11070. [2021-11-03 04:18:00,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11070 states, 10983 states have (on average 1.2730583629245198) internal successors, (13982), 11045 states have internal predecessors, (13982), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-03 04:18:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11070 states to 11070 states and 14018 transitions. [2021-11-03 04:18:00,978 INFO L78 Accepts]: Start accepts. Automaton has 11070 states and 14018 transitions. Word has length 59 [2021-11-03 04:18:00,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:00,979 INFO L470 AbstractCegarLoop]: Abstraction has 11070 states and 14018 transitions. [2021-11-03 04:18:00,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 04:18:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand 11070 states and 14018 transitions. [2021-11-03 04:18:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:18:00,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:00,983 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] [2021-11-03 04:18:01,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:18:01,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:18:01,206 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:18:01,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:01,207 INFO L85 PathProgramCache]: Analyzing trace with hash 589305686, now seen corresponding path program 1 times [2021-11-03 04:18:01,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:18:01,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363141318] [2021-11-03 04:18:01,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:01,216 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:18:01,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:18:01,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:18:01,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:18:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:06,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:18:06,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:07,010 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 04:18:07,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:07,238 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 04:18:07,238 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:18:07,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363141318] [2021-11-03 04:18:07,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363141318] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:07,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:07,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:18:07,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673163640] [2021-11-03 04:18:07,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:18:07,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:18:07,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:18:07,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:18:07,240 INFO L87 Difference]: Start difference. First operand 11070 states and 14018 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 04:18:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:10,356 INFO L93 Difference]: Finished difference Result 19752 states and 25046 transitions. [2021-11-03 04:18:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:18:10,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 60 [2021-11-03 04:18:10,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:10,406 INFO L225 Difference]: With dead ends: 19752 [2021-11-03 04:18:10,407 INFO L226 Difference]: Without dead ends: 8782 [2021-11-03 04:18:10,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 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 04:18:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8782 states. [2021-11-03 04:18:10,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8782 to 8782. [2021-11-03 04:18:10,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8782 states, 8699 states have (on average 1.2737096217956088) internal successors, (11080), 8757 states have internal predecessors, (11080), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-03 04:18:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8782 states to 8782 states and 11116 transitions. [2021-11-03 04:18:10,865 INFO L78 Accepts]: Start accepts. Automaton has 8782 states and 11116 transitions. Word has length 60 [2021-11-03 04:18:10,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:10,867 INFO L470 AbstractCegarLoop]: Abstraction has 8782 states and 11116 transitions. [2021-11-03 04:18:10,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 04:18:10,868 INFO L276 IsEmpty]: Start isEmpty. Operand 8782 states and 11116 transitions. [2021-11-03 04:18:10,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 04:18:10,875 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:10,876 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:10,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:18:11,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:18:11,091 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:18:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:11,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1539534065, now seen corresponding path program 1 times [2021-11-03 04:18:11,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:18:11,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297791875] [2021-11-03 04:18:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:11,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:18:11,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:18:11,099 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:18:11,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:18:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:16,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 2726 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:18:16,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:17,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:18:17,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:18:17,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297791875] [2021-11-03 04:18:17,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297791875] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:17,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:17,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:18:17,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247768416] [2021-11-03 04:18:17,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:18:17,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:18:17,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:18:17,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:18:17,460 INFO L87 Difference]: Start difference. First operand 8782 states and 11116 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 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 04:18:21,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:21,220 INFO L93 Difference]: Finished difference Result 20348 states and 25744 transitions. [2021-11-03 04:18:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:18:21,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 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 84 [2021-11-03 04:18:21,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:21,265 INFO L225 Difference]: With dead ends: 20348 [2021-11-03 04:18:21,265 INFO L226 Difference]: Without dead ends: 14472 [2021-11-03 04:18:21,280 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 164 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 04:18:21,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14472 states. [2021-11-03 04:18:22,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14472 to 14380. [2021-11-03 04:18:22,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14380 states, 14281 states have (on average 1.274840697430152) internal successors, (18206), 14339 states have internal predecessors, (18206), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-03 04:18:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14380 states to 14380 states and 18266 transitions. [2021-11-03 04:18:22,073 INFO L78 Accepts]: Start accepts. Automaton has 14380 states and 18266 transitions. Word has length 84 [2021-11-03 04:18:22,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:22,073 INFO L470 AbstractCegarLoop]: Abstraction has 14380 states and 18266 transitions. [2021-11-03 04:18:22,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 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 04:18:22,074 INFO L276 IsEmpty]: Start isEmpty. Operand 14380 states and 18266 transitions. [2021-11-03 04:18:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 04:18:22,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:22,076 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:22,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 04:18:22,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:18:22,291 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:18:22,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:22,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1391660714, now seen corresponding path program 1 times [2021-11-03 04:18:22,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:18:22,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922036014] [2021-11-03 04:18:22,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:22,295 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:18:22,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:18:22,295 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:18:22,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:18:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:27,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:18:27,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:18:28,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:18:29,193 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:18:29,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922036014] [2021-11-03 04:18:29,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922036014] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:29,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:29,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:18:29,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412798458] [2021-11-03 04:18:29,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:18:29,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:18:29,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:18:29,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:18:29,195 INFO L87 Difference]: Start difference. First operand 14380 states and 18266 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 04:18:30,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:30,808 INFO L93 Difference]: Finished difference Result 14380 states and 18266 transitions. [2021-11-03 04:18:30,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:18:30,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 84 [2021-11-03 04:18:30,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:30,850 INFO L225 Difference]: With dead ends: 14380 [2021-11-03 04:18:30,850 INFO L226 Difference]: Without dead ends: 14374 [2021-11-03 04:18:30,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:18:30,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14374 states. [2021-11-03 04:18:31,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14374 to 14374. [2021-11-03 04:18:31,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14374 states, 14278 states have (on average 1.2746883316991175) internal successors, (18200), 14333 states have internal predecessors, (18200), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-03 04:18:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14374 states to 14374 states and 18260 transitions. [2021-11-03 04:18:31,709 INFO L78 Accepts]: Start accepts. Automaton has 14374 states and 18260 transitions. Word has length 84 [2021-11-03 04:18:31,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:31,855 INFO L470 AbstractCegarLoop]: Abstraction has 14374 states and 18260 transitions. [2021-11-03 04:18:31,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 04:18:31,855 INFO L276 IsEmpty]: Start isEmpty. Operand 14374 states and 18260 transitions. [2021-11-03 04:18:31,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 04:18:31,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:31,857 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:31,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:18:32,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:18:32,058 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:18:32,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:32,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1650967527, now seen corresponding path program 1 times [2021-11-03 04:18:32,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:18:32,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245152604] [2021-11-03 04:18:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:32,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:18:32,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:18:32,066 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:18:32,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:18:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:37,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:18:37,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:18:38,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:18:38,974 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:18:38,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245152604] [2021-11-03 04:18:38,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245152604] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:38,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:38,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:18:38,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774508636] [2021-11-03 04:18:38,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:18:38,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:18:38,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:18:38,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:18:38,976 INFO L87 Difference]: Start difference. First operand 14374 states and 18260 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 04:18:40,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:40,226 INFO L93 Difference]: Finished difference Result 14374 states and 18260 transitions. [2021-11-03 04:18:40,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:18:40,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 86 [2021-11-03 04:18:40,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:40,262 INFO L225 Difference]: With dead ends: 14374 [2021-11-03 04:18:40,262 INFO L226 Difference]: Without dead ends: 14368 [2021-11-03 04:18:40,267 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:18:40,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14368 states. [2021-11-03 04:18:41,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14368 to 14368. [2021-11-03 04:18:41,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14368 states, 14275 states have (on average 1.2745359019264448) internal successors, (18194), 14327 states have internal predecessors, (18194), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-03 04:18:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14368 states to 14368 states and 18254 transitions. [2021-11-03 04:18:41,209 INFO L78 Accepts]: Start accepts. Automaton has 14368 states and 18254 transitions. Word has length 86 [2021-11-03 04:18:41,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:41,210 INFO L470 AbstractCegarLoop]: Abstraction has 14368 states and 18254 transitions. [2021-11-03 04:18:41,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 04:18:41,210 INFO L276 IsEmpty]: Start isEmpty. Operand 14368 states and 18254 transitions. [2021-11-03 04:18:41,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 04:18:41,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:41,213 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:41,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:18:41,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:18:41,434 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:18:41,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:41,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1736711332, now seen corresponding path program 1 times [2021-11-03 04:18:41,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:18:41,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311743928] [2021-11-03 04:18:41,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:41,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:18:41,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:18:41,442 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:18:41,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:18:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:46,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:18:46,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:18:47,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:18:48,576 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:18:48,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311743928] [2021-11-03 04:18:48,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311743928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:48,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:48,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:18:48,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099624294] [2021-11-03 04:18:48,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:18:48,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:18:48,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:18:48,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:18:48,578 INFO L87 Difference]: Start difference. First operand 14368 states and 18254 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 04:18:49,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:49,801 INFO L93 Difference]: Finished difference Result 14368 states and 18254 transitions. [2021-11-03 04:18:49,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:18:49,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 88 [2021-11-03 04:18:49,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:49,835 INFO L225 Difference]: With dead ends: 14368 [2021-11-03 04:18:49,835 INFO L226 Difference]: Without dead ends: 14362 [2021-11-03 04:18:49,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:18:49,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14362 states. [2021-11-03 04:18:50,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14362 to 14362. [2021-11-03 04:18:50,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14362 states, 14272 states have (on average 1.2743834080717489) internal successors, (18188), 14321 states have internal predecessors, (18188), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-03 04:18:50,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14362 states to 14362 states and 18248 transitions. [2021-11-03 04:18:50,911 INFO L78 Accepts]: Start accepts. Automaton has 14362 states and 18248 transitions. Word has length 88 [2021-11-03 04:18:50,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:18:50,912 INFO L470 AbstractCegarLoop]: Abstraction has 14362 states and 18248 transitions. [2021-11-03 04:18:50,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 04:18:50,912 INFO L276 IsEmpty]: Start isEmpty. Operand 14362 states and 18248 transitions. [2021-11-03 04:18:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 04:18:50,925 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:18:50,925 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:50,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:18:51,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:18:51,142 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:18:51,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:18:51,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1762838303, now seen corresponding path program 1 times [2021-11-03 04:18:51,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:18:51,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489326333] [2021-11-03 04:18:51,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:18:51,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:18:51,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:18:51,151 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:18:51,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:18:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:18:56,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:18:56,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:18:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:18:57,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:18:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:18:58,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:18:58,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489326333] [2021-11-03 04:18:58,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489326333] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:18:58,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:18:58,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:18:58,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792581449] [2021-11-03 04:18:58,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:18:58,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:18:58,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:18:58,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:18:58,132 INFO L87 Difference]: Start difference. First operand 14362 states and 18248 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 04:18:59,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:18:59,203 INFO L93 Difference]: Finished difference Result 14362 states and 18248 transitions. [2021-11-03 04:18:59,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:18:59,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 04:18:59,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:18:59,232 INFO L225 Difference]: With dead ends: 14362 [2021-11-03 04:18:59,233 INFO L226 Difference]: Without dead ends: 14356 [2021-11-03 04:18:59,239 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:18:59,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14356 states. [2021-11-03 04:19:00,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14356 to 14356. [2021-11-03 04:19:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14356 states, 14269 states have (on average 1.2742308500946107) internal successors, (18182), 14315 states have internal predecessors, (18182), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-03 04:19:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14356 states to 14356 states and 18242 transitions. [2021-11-03 04:19:00,409 INFO L78 Accepts]: Start accepts. Automaton has 14356 states and 18242 transitions. Word has length 90 [2021-11-03 04:19:00,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:00,409 INFO L470 AbstractCegarLoop]: Abstraction has 14356 states and 18242 transitions. [2021-11-03 04:19:00,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 04:19:00,409 INFO L276 IsEmpty]: Start isEmpty. Operand 14356 states and 18242 transitions. [2021-11-03 04:19:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 04:19:00,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:00,412 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:00,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:19:00,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:19:00,635 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:19:00,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:00,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1870645090, now seen corresponding path program 1 times [2021-11-03 04:19:00,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:19:00,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711066789] [2021-11-03 04:19:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:00,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:19:00,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:19:00,639 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:19:00,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:19:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:06,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:19:06,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:19:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:19:06,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:19:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:19:07,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:19:07,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711066789] [2021-11-03 04:19:07,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711066789] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:07,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:07,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:19:07,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106527812] [2021-11-03 04:19:07,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:19:07,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:19:07,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:19:07,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:19:07,652 INFO L87 Difference]: Start difference. First operand 14356 states and 18242 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 04:19:08,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:08,780 INFO L93 Difference]: Finished difference Result 14356 states and 18242 transitions. [2021-11-03 04:19:08,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:19:08,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 92 [2021-11-03 04:19:08,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:08,797 INFO L225 Difference]: With dead ends: 14356 [2021-11-03 04:19:08,798 INFO L226 Difference]: Without dead ends: 14350 [2021-11-03 04:19:08,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:19:08,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14350 states. [2021-11-03 04:19:10,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14350 to 14350. [2021-11-03 04:19:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14350 states, 14266 states have (on average 1.2740782279545773) internal successors, (18176), 14309 states have internal predecessors, (18176), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-03 04:19:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14350 states to 14350 states and 18236 transitions. [2021-11-03 04:19:10,123 INFO L78 Accepts]: Start accepts. Automaton has 14350 states and 18236 transitions. Word has length 92 [2021-11-03 04:19:10,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:10,123 INFO L470 AbstractCegarLoop]: Abstraction has 14350 states and 18236 transitions. [2021-11-03 04:19:10,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 04:19:10,124 INFO L276 IsEmpty]: Start isEmpty. Operand 14350 states and 18236 transitions. [2021-11-03 04:19:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 04:19:10,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:10,129 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:10,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:19:10,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:19:10,347 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:19:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:10,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1901214683, now seen corresponding path program 1 times [2021-11-03 04:19:10,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:19:10,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703769498] [2021-11-03 04:19:10,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:10,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:19:10,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:19:10,355 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:19:10,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:19:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:15,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:19:15,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:19:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:19:16,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:19:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:19:17,424 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:19:17,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703769498] [2021-11-03 04:19:17,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703769498] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:17,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:17,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:19:17,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156489282] [2021-11-03 04:19:17,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:19:17,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:19:17,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:19:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:19:17,426 INFO L87 Difference]: Start difference. First operand 14350 states and 18236 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:18,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:18,607 INFO L93 Difference]: Finished difference Result 14350 states and 18236 transitions. [2021-11-03 04:19:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:19:18,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-03 04:19:18,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:18,624 INFO L225 Difference]: With dead ends: 14350 [2021-11-03 04:19:18,624 INFO L226 Difference]: Without dead ends: 14344 [2021-11-03 04:19:18,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:19:18,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14344 states. [2021-11-03 04:19:19,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14344 to 14344. [2021-11-03 04:19:19,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14344 states, 14263 states have (on average 1.2739255416111617) internal successors, (18170), 14303 states have internal predecessors, (18170), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-03 04:19:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14344 states to 14344 states and 18230 transitions. [2021-11-03 04:19:19,910 INFO L78 Accepts]: Start accepts. Automaton has 14344 states and 18230 transitions. Word has length 94 [2021-11-03 04:19:19,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:19,910 INFO L470 AbstractCegarLoop]: Abstraction has 14344 states and 18230 transitions. [2021-11-03 04:19:19,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 14344 states and 18230 transitions. [2021-11-03 04:19:19,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 04:19:19,912 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:19,912 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:19,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:19:20,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:19:20,113 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:19:20,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:20,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1706058392, now seen corresponding path program 1 times [2021-11-03 04:19:20,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:19:20,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201278853] [2021-11-03 04:19:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:20,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:19:20,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:19:20,119 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:19:20,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:19:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:25,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 2715 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:19:25,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:19:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:19:26,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:19:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:19:27,354 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:19:27,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201278853] [2021-11-03 04:19:27,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201278853] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:27,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:27,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:19:27,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857176220] [2021-11-03 04:19:27,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:19:27,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:19:27,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:19:27,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:19:27,356 INFO L87 Difference]: Start difference. First operand 14344 states and 18230 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 04:19:28,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:28,968 INFO L93 Difference]: Finished difference Result 14344 states and 18230 transitions. [2021-11-03 04:19:28,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:19:28,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 96 [2021-11-03 04:19:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:28,986 INFO L225 Difference]: With dead ends: 14344 [2021-11-03 04:19:28,986 INFO L226 Difference]: Without dead ends: 14338 [2021-11-03 04:19:28,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:19:29,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14338 states. [2021-11-03 04:19:29,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14338 to 14338. [2021-11-03 04:19:29,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14338 states, 14260 states have (on average 1.273772791023843) internal successors, (18164), 14297 states have internal predecessors, (18164), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-03 04:19:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14338 states to 14338 states and 18224 transitions. [2021-11-03 04:19:29,945 INFO L78 Accepts]: Start accepts. Automaton has 14338 states and 18224 transitions. Word has length 96 [2021-11-03 04:19:29,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:29,945 INFO L470 AbstractCegarLoop]: Abstraction has 14338 states and 18224 transitions. [2021-11-03 04:19:29,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 04:19:29,945 INFO L276 IsEmpty]: Start isEmpty. Operand 14338 states and 18224 transitions. [2021-11-03 04:19:29,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 04:19:29,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:29,949 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:29,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:19:30,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:19:30,159 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:19:30,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:30,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1155543851, now seen corresponding path program 1 times [2021-11-03 04:19:30,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:19:30,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204161801] [2021-11-03 04:19:30,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:30,163 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:19:30,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:19:30,164 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:19:30,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:19:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:35,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:19:35,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:19:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:19:36,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:19:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:19:37,456 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:19:37,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204161801] [2021-11-03 04:19:37,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204161801] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:37,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:37,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:19:37,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690662045] [2021-11-03 04:19:37,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:19:37,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:19:37,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:19:37,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:19:37,459 INFO L87 Difference]: Start difference. First operand 14338 states and 18224 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 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 04:19:38,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:38,737 INFO L93 Difference]: Finished difference Result 14338 states and 18224 transitions. [2021-11-03 04:19:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:19:38,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 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 98 [2021-11-03 04:19:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:38,752 INFO L225 Difference]: With dead ends: 14338 [2021-11-03 04:19:38,752 INFO L226 Difference]: Without dead ends: 14332 [2021-11-03 04:19:38,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:19:38,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14332 states. [2021-11-03 04:19:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14332 to 14332. [2021-11-03 04:19:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14332 states, 14257 states have (on average 1.2736199761520657) internal successors, (18158), 14291 states have internal predecessors, (18158), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-03 04:19:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14332 states to 14332 states and 18218 transitions. [2021-11-03 04:19:39,719 INFO L78 Accepts]: Start accepts. Automaton has 14332 states and 18218 transitions. Word has length 98 [2021-11-03 04:19:39,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:39,719 INFO L470 AbstractCegarLoop]: Abstraction has 14332 states and 18218 transitions. [2021-11-03 04:19:39,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 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 04:19:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand 14332 states and 18218 transitions. [2021-11-03 04:19:39,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 04:19:39,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:39,723 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:39,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:19:39,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:19:39,941 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:19:39,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:39,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1918737042, now seen corresponding path program 1 times [2021-11-03 04:19:39,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:19:39,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351595452] [2021-11-03 04:19:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:39,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:19:39,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:19:39,947 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:19:39,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:19:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:45,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:19:45,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:19:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:19:46,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:19:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:19:47,348 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:19:47,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351595452] [2021-11-03 04:19:47,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351595452] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:47,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:47,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:19:47,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043232221] [2021-11-03 04:19:47,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:19:47,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:19:47,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:19:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:19:47,351 INFO L87 Difference]: Start difference. First operand 14332 states and 18218 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 04:19:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:48,812 INFO L93 Difference]: Finished difference Result 14332 states and 18218 transitions. [2021-11-03 04:19:48,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:19:48,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 100 [2021-11-03 04:19:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:48,835 INFO L225 Difference]: With dead ends: 14332 [2021-11-03 04:19:48,835 INFO L226 Difference]: Without dead ends: 14326 [2021-11-03 04:19:48,839 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:19:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14326 states. [2021-11-03 04:19:49,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14326 to 14326. [2021-11-03 04:19:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14326 states, 14254 states have (on average 1.2734670969552406) internal successors, (18152), 14285 states have internal predecessors, (18152), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-03 04:19:49,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14326 states to 14326 states and 18212 transitions. [2021-11-03 04:19:49,839 INFO L78 Accepts]: Start accepts. Automaton has 14326 states and 18212 transitions. Word has length 100 [2021-11-03 04:19:49,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:49,839 INFO L470 AbstractCegarLoop]: Abstraction has 14326 states and 18212 transitions. [2021-11-03 04:19:49,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 04:19:49,840 INFO L276 IsEmpty]: Start isEmpty. Operand 14326 states and 18212 transitions. [2021-11-03 04:19:49,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-03 04:19:49,843 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:49,844 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:49,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:19:50,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:19:50,059 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:19:50,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:50,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1365175247, now seen corresponding path program 1 times [2021-11-03 04:19:50,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:19:50,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441706320] [2021-11-03 04:19:50,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:50,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:19:50,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:19:50,063 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:19:50,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:19:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:55,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:19:55,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:19:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:19:56,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:19:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:19:57,605 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:19:57,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441706320] [2021-11-03 04:19:57,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441706320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:57,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:57,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:19:57,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036884268] [2021-11-03 04:19:57,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:19:57,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:19:57,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:19:57,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:19:57,607 INFO L87 Difference]: Start difference. First operand 14326 states and 18212 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:59,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:59,214 INFO L93 Difference]: Finished difference Result 14326 states and 18212 transitions. [2021-11-03 04:19:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:19:59,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-03 04:19:59,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:59,230 INFO L225 Difference]: With dead ends: 14326 [2021-11-03 04:19:59,230 INFO L226 Difference]: Without dead ends: 14320 [2021-11-03 04:19:59,233 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:19:59,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14320 states. [2021-11-03 04:20:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14320 to 14320. [2021-11-03 04:20:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14320 states, 14251 states have (on average 1.2733141533927443) internal successors, (18146), 14279 states have internal predecessors, (18146), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-03 04:20:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14320 states to 14320 states and 18206 transitions. [2021-11-03 04:20:00,295 INFO L78 Accepts]: Start accepts. Automaton has 14320 states and 18206 transitions. Word has length 102 [2021-11-03 04:20:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:00,295 INFO L470 AbstractCegarLoop]: Abstraction has 14320 states and 18206 transitions. [2021-11-03 04:20:00,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:20:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 14320 states and 18206 transitions. [2021-11-03 04:20:00,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 04:20:00,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:00,299 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:00,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:20:00,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:20:00,522 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:20:00,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:00,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1968234636, now seen corresponding path program 1 times [2021-11-03 04:20:00,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:20:00,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050090244] [2021-11-03 04:20:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:00,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:20:00,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:20:00,528 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:20:00,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:20:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:06,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 2727 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:20:06,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:20:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:20:07,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:20:08,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:20:08,068 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:20:08,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050090244] [2021-11-03 04:20:08,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050090244] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:08,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:08,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:20:08,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362102053] [2021-11-03 04:20:08,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:20:08,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:20:08,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:20:08,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:20:08,069 INFO L87 Difference]: Start difference. First operand 14320 states and 18206 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 04:20:09,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:09,615 INFO L93 Difference]: Finished difference Result 14320 states and 18206 transitions. [2021-11-03 04:20:09,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:20:09,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 104 [2021-11-03 04:20:09,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:09,633 INFO L225 Difference]: With dead ends: 14320 [2021-11-03 04:20:09,634 INFO L226 Difference]: Without dead ends: 14314 [2021-11-03 04:20:09,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:20:09,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14314 states. [2021-11-03 04:20:10,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14314 to 14314. [2021-11-03 04:20:10,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14314 states, 14248 states have (on average 1.2731611454239191) internal successors, (18140), 14273 states have internal predecessors, (18140), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-03 04:20:10,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14314 states to 14314 states and 18200 transitions. [2021-11-03 04:20:10,769 INFO L78 Accepts]: Start accepts. Automaton has 14314 states and 18200 transitions. Word has length 104 [2021-11-03 04:20:10,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:10,769 INFO L470 AbstractCegarLoop]: Abstraction has 14314 states and 18200 transitions. [2021-11-03 04:20:10,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 04:20:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 14314 states and 18200 transitions. [2021-11-03 04:20:10,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 04:20:10,773 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:10,774 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:10,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:20:10,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:20:10,986 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:20:10,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:10,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1687722185, now seen corresponding path program 1 times [2021-11-03 04:20:10,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:20:10,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216775263] [2021-11-03 04:20:10,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:10,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:20:10,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:20:10,991 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:20:10,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:20:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:16,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:20:16,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:20:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:20:17,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:20:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:20:18,536 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:20:18,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216775263] [2021-11-03 04:20:18,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216775263] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:18,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:18,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:20:18,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331381245] [2021-11-03 04:20:18,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:20:18,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:20:18,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:20:18,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:20:18,538 INFO L87 Difference]: Start difference. First operand 14314 states and 18200 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 04:20:20,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:20,159 INFO L93 Difference]: Finished difference Result 14314 states and 18200 transitions. [2021-11-03 04:20:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:20:20,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 106 [2021-11-03 04:20:20,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:20,175 INFO L225 Difference]: With dead ends: 14314 [2021-11-03 04:20:20,175 INFO L226 Difference]: Without dead ends: 14222 [2021-11-03 04:20:20,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:20:20,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14222 states. [2021-11-03 04:20:21,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14222 to 8632. [2021-11-03 04:20:21,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8632 states, 8585 states have (on average 1.2728013977868375) internal successors, (10927), 8607 states have internal predecessors, (10927), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-03 04:20:21,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8632 states to 8632 states and 10963 transitions. [2021-11-03 04:20:21,066 INFO L78 Accepts]: Start accepts. Automaton has 8632 states and 10963 transitions. Word has length 106 [2021-11-03 04:20:21,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:21,066 INFO L470 AbstractCegarLoop]: Abstraction has 8632 states and 10963 transitions. [2021-11-03 04:20:21,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 04:20:21,066 INFO L276 IsEmpty]: Start isEmpty. Operand 8632 states and 10963 transitions. [2021-11-03 04:20:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 04:20:21,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:21,069 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] [2021-11-03 04:20:21,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:20:21,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:20:21,282 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:20:21,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1775453187, now seen corresponding path program 1 times [2021-11-03 04:20:21,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:20:21,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185579012] [2021-11-03 04:20:21,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:21,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:20:21,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:20:21,288 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:20:21,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 04:20:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:27,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 2855 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:20:27,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:20:27,952 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 04:20:27,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:20:28,406 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 04:20:28,407 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:20:28,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185579012] [2021-11-03 04:20:28,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185579012] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:28,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:28,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:20:28,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235023932] [2021-11-03 04:20:28,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:20:28,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:20:28,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:20:28,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:20:28,411 INFO L87 Difference]: Start difference. First operand 8632 states and 10963 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 04:20:32,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:32,058 INFO L93 Difference]: Finished difference Result 17802 states and 22624 transitions. [2021-11-03 04:20:32,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:20:32,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 108 [2021-11-03 04:20:32,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:32,070 INFO L225 Difference]: With dead ends: 17802 [2021-11-03 04:20:32,070 INFO L226 Difference]: Without dead ends: 9270 [2021-11-03 04:20:32,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 212 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 04:20:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9270 states. [2021-11-03 04:20:32,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9270 to 9186. [2021-11-03 04:20:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9186 states, 9147 states have (on average 1.2709084945883897) internal successors, (11625), 9169 states have internal predecessors, (11625), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:20:32,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9186 states to 9186 states and 11649 transitions. [2021-11-03 04:20:32,962 INFO L78 Accepts]: Start accepts. Automaton has 9186 states and 11649 transitions. Word has length 108 [2021-11-03 04:20:32,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:32,962 INFO L470 AbstractCegarLoop]: Abstraction has 9186 states and 11649 transitions. [2021-11-03 04:20:32,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 04:20:32,963 INFO L276 IsEmpty]: Start isEmpty. Operand 9186 states and 11649 transitions. [2021-11-03 04:20:32,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-03 04:20:32,967 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:32,967 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:33,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:20:33,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:20:33,190 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:20:33,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:33,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1051034662, now seen corresponding path program 1 times [2021-11-03 04:20:33,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:20:33,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399588176] [2021-11-03 04:20:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:33,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:20:33,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:20:33,196 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:20:33,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 04:20:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:39,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:20:39,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:20:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:40,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:20:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:20:40,794 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:20:40,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399588176] [2021-11-03 04:20:40,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399588176] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:40,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:40,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:20:40,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605354722] [2021-11-03 04:20:40,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:20:40,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:20:40,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:20:40,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:20:40,797 INFO L87 Difference]: Start difference. First operand 9186 states and 11649 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 04:20:45,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:45,022 INFO L93 Difference]: Finished difference Result 23198 states and 29458 transitions. [2021-11-03 04:20:45,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:20:45,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 156 [2021-11-03 04:20:45,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:45,039 INFO L225 Difference]: With dead ends: 23198 [2021-11-03 04:20:45,039 INFO L226 Difference]: Without dead ends: 14176 [2021-11-03 04:20:45,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 308 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 04:20:45,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14176 states. [2021-11-03 04:20:46,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14176 to 14092. [2021-11-03 04:20:46,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14092 states, 14053 states have (on average 1.271401124315093) internal successors, (17867), 14075 states have internal predecessors, (17867), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:20:46,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14092 states to 14092 states and 17891 transitions. [2021-11-03 04:20:46,360 INFO L78 Accepts]: Start accepts. Automaton has 14092 states and 17891 transitions. Word has length 156 [2021-11-03 04:20:46,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:20:46,360 INFO L470 AbstractCegarLoop]: Abstraction has 14092 states and 17891 transitions. [2021-11-03 04:20:46,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 04:20:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 14092 states and 17891 transitions. [2021-11-03 04:20:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-03 04:20:46,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:20:46,367 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:46,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 04:20:46,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:20:46,582 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:20:46,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:20:46,583 INFO L85 PathProgramCache]: Analyzing trace with hash -612457845, now seen corresponding path program 1 times [2021-11-03 04:20:46,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:20:46,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687556988] [2021-11-03 04:20:46,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:20:46,587 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:20:46,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:20:46,588 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:20:46,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-03 04:20:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:20:52,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:20:52,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:20:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:20:53,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:20:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:20:54,346 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:20:54,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687556988] [2021-11-03 04:20:54,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687556988] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:20:54,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:20:54,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:20:54,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023838977] [2021-11-03 04:20:54,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:20:54,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:20:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:20:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:20:54,348 INFO L87 Difference]: Start difference. First operand 14092 states and 17891 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 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 04:20:58,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:20:58,939 INFO L93 Difference]: Finished difference Result 31380 states and 39844 transitions. [2021-11-03 04:20:58,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:20:58,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 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 189 [2021-11-03 04:20:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:20:58,965 INFO L225 Difference]: With dead ends: 31380 [2021-11-03 04:20:58,965 INFO L226 Difference]: Without dead ends: 17452 [2021-11-03 04:20:58,978 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 374 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 04:20:58,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17452 states. [2021-11-03 04:21:00,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17452 to 17368. [2021-11-03 04:21:00,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17368 states, 17329 states have (on average 1.2713370650354896) internal successors, (22031), 17351 states have internal predecessors, (22031), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:21:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17368 states to 17368 states and 22055 transitions. [2021-11-03 04:21:00,786 INFO L78 Accepts]: Start accepts. Automaton has 17368 states and 22055 transitions. Word has length 189 [2021-11-03 04:21:00,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:00,786 INFO L470 AbstractCegarLoop]: Abstraction has 17368 states and 22055 transitions. [2021-11-03 04:21:00,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 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 04:21:00,786 INFO L276 IsEmpty]: Start isEmpty. Operand 17368 states and 22055 transitions. [2021-11-03 04:21:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-03 04:21:00,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:00,792 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:00,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:01,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:01,006 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:21:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:01,007 INFO L85 PathProgramCache]: Analyzing trace with hash 515327842, now seen corresponding path program 1 times [2021-11-03 04:21:01,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:01,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3988258] [2021-11-03 04:21:01,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:01,011 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:01,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:01,012 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:01,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 04:21:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:07,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:21:07,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:21:08,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:21:08,814 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:08,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3988258] [2021-11-03 04:21:08,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3988258] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:08,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:08,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:21:08,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131308006] [2021-11-03 04:21:08,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:21:08,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:08,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:21:08,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:21:08,817 INFO L87 Difference]: Start difference. First operand 17368 states and 22055 transitions. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 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 04:21:13,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:13,876 INFO L93 Difference]: Finished difference Result 37956 states and 48208 transitions. [2021-11-03 04:21:13,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:21:13,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 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 190 [2021-11-03 04:21:13,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:13,900 INFO L225 Difference]: With dead ends: 37956 [2021-11-03 04:21:13,900 INFO L226 Difference]: Without dead ends: 20752 [2021-11-03 04:21:13,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 376 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 04:21:13,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20752 states. [2021-11-03 04:21:16,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20752 to 20668. [2021-11-03 04:21:16,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20668 states, 20629 states have (on average 1.2713655533472297) internal successors, (26227), 20651 states have internal predecessors, (26227), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:21:16,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20668 states to 20668 states and 26251 transitions. [2021-11-03 04:21:16,140 INFO L78 Accepts]: Start accepts. Automaton has 20668 states and 26251 transitions. Word has length 190 [2021-11-03 04:21:16,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:16,140 INFO L470 AbstractCegarLoop]: Abstraction has 20668 states and 26251 transitions. [2021-11-03 04:21:16,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 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 04:21:16,140 INFO L276 IsEmpty]: Start isEmpty. Operand 20668 states and 26251 transitions. [2021-11-03 04:21:16,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-03 04:21:16,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:16,154 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:16,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:16,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:16,379 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:21:16,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash -957563151, now seen corresponding path program 1 times [2021-11-03 04:21:16,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:16,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440009465] [2021-11-03 04:21:16,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:16,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:16,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:16,385 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:16,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-03 04:21:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:23,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 3356 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:21:23,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:21:24,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:21:25,667 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:25,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440009465] [2021-11-03 04:21:25,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440009465] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:25,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:25,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:21:25,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093388767] [2021-11-03 04:21:25,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:21:25,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:25,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:21:25,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:21:25,669 INFO L87 Difference]: Start difference. First operand 20668 states and 26251 transitions. Second operand has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:36,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:36,904 INFO L93 Difference]: Finished difference Result 76668 states and 97344 transitions. [2021-11-03 04:21:36,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:21:36,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2021-11-03 04:21:36,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:36,989 INFO L225 Difference]: With dead ends: 76668 [2021-11-03 04:21:36,989 INFO L226 Difference]: Without dead ends: 56164 [2021-11-03 04:21:37,013 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:21:37,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56164 states. [2021-11-03 04:21:40,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56164 to 20680. [2021-11-03 04:21:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20680 states, 20641 states have (on average 1.2712077903202363) internal successors, (26239), 20663 states have internal predecessors, (26239), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:21:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20680 states to 20680 states and 26263 transitions. [2021-11-03 04:21:40,483 INFO L78 Accepts]: Start accepts. Automaton has 20680 states and 26263 transitions. Word has length 235 [2021-11-03 04:21:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:40,484 INFO L470 AbstractCegarLoop]: Abstraction has 20680 states and 26263 transitions. [2021-11-03 04:21:40,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:40,484 INFO L276 IsEmpty]: Start isEmpty. Operand 20680 states and 26263 transitions. [2021-11-03 04:21:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 04:21:40,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:40,491 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:40,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:40,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:40,707 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:21:40,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:40,707 INFO L85 PathProgramCache]: Analyzing trace with hash -68524232, now seen corresponding path program 1 times [2021-11-03 04:21:40,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:40,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580377929] [2021-11-03 04:21:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:40,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:40,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:40,712 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:40,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-03 04:21:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:47,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:21:47,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:48,303 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:21:48,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:21:49,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:49,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580377929] [2021-11-03 04:21:49,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580377929] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:49,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:49,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:21:49,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790917862] [2021-11-03 04:21:49,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:21:49,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:49,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:21:49,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:21:49,075 INFO L87 Difference]: Start difference. First operand 20680 states and 26263 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 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 04:21:55,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:55,371 INFO L93 Difference]: Finished difference Result 42934 states and 54510 transitions. [2021-11-03 04:21:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:21:55,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 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 238 [2021-11-03 04:21:55,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:55,396 INFO L225 Difference]: With dead ends: 42934 [2021-11-03 04:21:55,396 INFO L226 Difference]: Without dead ends: 22418 [2021-11-03 04:21:55,410 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 472 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 04:21:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22418 states. [2021-11-03 04:21:59,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22418 to 22334. [2021-11-03 04:21:59,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22334 states, 22295 states have (on average 1.2706436420722136) internal successors, (28329), 22317 states have internal predecessors, (28329), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:21:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22334 states to 22334 states and 28353 transitions. [2021-11-03 04:21:59,049 INFO L78 Accepts]: Start accepts. Automaton has 22334 states and 28353 transitions. Word has length 238 [2021-11-03 04:21:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:59,050 INFO L470 AbstractCegarLoop]: Abstraction has 22334 states and 28353 transitions. [2021-11-03 04:21:59,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 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 04:21:59,050 INFO L276 IsEmpty]: Start isEmpty. Operand 22334 states and 28353 transitions. [2021-11-03 04:21:59,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-03 04:21:59,057 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:59,058 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:59,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:59,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:59,271 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:21:59,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:59,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1053554916, now seen corresponding path program 1 times [2021-11-03 04:21:59,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:59,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333763087] [2021-11-03 04:21:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:59,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:59,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:59,276 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:59,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-03 04:22:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:06,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 3158 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 04:22:06,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:22:07,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:08,718 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:22:08,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:08,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333763087] [2021-11-03 04:22:08,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333763087] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:08,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:08,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-11-03 04:22:08,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891905848] [2021-11-03 04:22:08,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:22:08,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:08,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:22:08,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:22:08,721 INFO L87 Difference]: Start difference. First operand 22334 states and 28353 transitions. Second operand has 15 states, 15 states have (on average 16.466666666666665) internal successors, (247), 15 states have internal predecessors, (247), 0 states have call successors, (0), 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 04:22:37,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:37,322 INFO L93 Difference]: Finished difference Result 119098 states and 151079 transitions. [2021-11-03 04:22:37,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 04:22:37,323 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 16.466666666666665) internal successors, (247), 15 states have internal predecessors, (247), 0 states have call successors, (0), 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 239 [2021-11-03 04:22:37,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:37,476 INFO L225 Difference]: With dead ends: 119098 [2021-11-03 04:22:37,476 INFO L226 Difference]: Without dead ends: 96896 [2021-11-03 04:22:37,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=275, Invalid=717, Unknown=0, NotChecked=0, Total=992 [2021-11-03 04:22:37,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96896 states. [2021-11-03 04:22:43,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96896 to 27530. [2021-11-03 04:22:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27530 states, 27491 states have (on average 1.2712887854206831) internal successors, (34949), 27513 states have internal predecessors, (34949), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:22:43,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27530 states to 27530 states and 34973 transitions. [2021-11-03 04:22:43,178 INFO L78 Accepts]: Start accepts. Automaton has 27530 states and 34973 transitions. Word has length 239 [2021-11-03 04:22:43,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:43,179 INFO L470 AbstractCegarLoop]: Abstraction has 27530 states and 34973 transitions. [2021-11-03 04:22:43,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.466666666666665) internal successors, (247), 15 states have internal predecessors, (247), 0 states have call successors, (0), 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 04:22:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 27530 states and 34973 transitions. [2021-11-03 04:22:43,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-03 04:22:43,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:43,187 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:43,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-03 04:22:43,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:43,388 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:22:43,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:43,389 INFO L85 PathProgramCache]: Analyzing trace with hash -784288547, now seen corresponding path program 1 times [2021-11-03 04:22:43,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:43,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401422037] [2021-11-03 04:22:43,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:43,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:43,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:43,394 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:43,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-03 04:22:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:51,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 3384 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:22:51,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:22:52,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:22:52,858 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:52,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401422037] [2021-11-03 04:22:52,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401422037] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:52,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:52,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:22:52,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27072535] [2021-11-03 04:22:52,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:22:52,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:52,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:22:52,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:22:52,860 INFO L87 Difference]: Start difference. First operand 27530 states and 34973 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:09,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:09,824 INFO L93 Difference]: Finished difference Result 107840 states and 137092 transitions. [2021-11-03 04:23:09,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:23:09,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2021-11-03 04:23:09,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:09,950 INFO L225 Difference]: With dead ends: 107840 [2021-11-03 04:23:09,950 INFO L226 Difference]: Without dead ends: 80474 [2021-11-03 04:23:09,982 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 478 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 04:23:10,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80474 states. [2021-11-03 04:23:16,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80474 to 27550. [2021-11-03 04:23:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27550 states, 27511 states have (on average 1.2712369597615498) internal successors, (34973), 27533 states have internal predecessors, (34973), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:23:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27550 states to 27550 states and 34997 transitions. [2021-11-03 04:23:16,614 INFO L78 Accepts]: Start accepts. Automaton has 27550 states and 34997 transitions. Word has length 241 [2021-11-03 04:23:16,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:16,615 INFO L470 AbstractCegarLoop]: Abstraction has 27550 states and 34997 transitions. [2021-11-03 04:23:16,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:16,615 INFO L276 IsEmpty]: Start isEmpty. Operand 27550 states and 34997 transitions. [2021-11-03 04:23:16,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-03 04:23:16,621 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:16,621 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:23:16,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-11-03 04:23:16,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:16,822 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:23:16,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:16,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1674362664, now seen corresponding path program 1 times [2021-11-03 04:23:16,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:16,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632245494] [2021-11-03 04:23:16,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:16,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:16,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:16,828 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:16,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-03 04:23:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:24,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 3380 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:23:24,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:23:25,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:23:26,629 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:26,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632245494] [2021-11-03 04:23:26,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632245494] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:26,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:26,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-03 04:23:26,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812801881] [2021-11-03 04:23:26,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:23:26,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:26,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:23:26,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:23:26,632 INFO L87 Difference]: Start difference. First operand 27550 states and 34997 transitions. Second operand has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:25,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:25,543 INFO L93 Difference]: Finished difference Result 55068 states and 69986 transitions. [2021-11-03 04:25:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:25:25,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2021-11-03 04:25:25,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:25,580 INFO L225 Difference]: With dead ends: 55068 [2021-11-03 04:25:25,580 INFO L226 Difference]: Without dead ends: 27682 [2021-11-03 04:25:25,597 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:25:25,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27682 states. [2021-11-03 04:25:31,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27682 to 27558. [2021-11-03 04:25:31,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27558 states, 27519 states have (on average 1.2713034630618845) internal successors, (34985), 27541 states have internal predecessors, (34985), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:25:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27558 states to 27558 states and 35009 transitions. [2021-11-03 04:25:31,179 INFO L78 Accepts]: Start accepts. Automaton has 27558 states and 35009 transitions. Word has length 243 [2021-11-03 04:25:31,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:31,179 INFO L470 AbstractCegarLoop]: Abstraction has 27558 states and 35009 transitions. [2021-11-03 04:25:31,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand 27558 states and 35009 transitions. [2021-11-03 04:25:31,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-03 04:25:31,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:31,186 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:31,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-03 04:25:31,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:31,387 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:25:31,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:31,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1737095642, now seen corresponding path program 1 times [2021-11-03 04:25:31,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:31,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63948099] [2021-11-03 04:25:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:31,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:31,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:31,396 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:31,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-03 04:25:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:39,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 3378 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:25:39,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:25:40,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:25:40,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:40,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63948099] [2021-11-03 04:25:40,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63948099] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:40,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:40,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:25:40,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414358685] [2021-11-03 04:25:40,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:25:40,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:40,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:25:40,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:25:40,888 INFO L87 Difference]: Start difference. First operand 27558 states and 35009 transitions. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:14,321 INFO L93 Difference]: Finished difference Result 157230 states and 199648 transitions. [2021-11-03 04:26:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:26:14,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2021-11-03 04:26:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:14,547 INFO L225 Difference]: With dead ends: 157230 [2021-11-03 04:26:14,547 INFO L226 Difference]: Without dead ends: 129836 [2021-11-03 04:26:14,595 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:26:14,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129836 states. [2021-11-03 04:26:22,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129836 to 27566. [2021-11-03 04:26:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27566 states, 27527 states have (on average 1.2712246158317289) internal successors, (34993), 27549 states have internal predecessors, (34993), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:26:22,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27566 states to 27566 states and 35017 transitions. [2021-11-03 04:26:22,144 INFO L78 Accepts]: Start accepts. Automaton has 27566 states and 35017 transitions. Word has length 243 [2021-11-03 04:26:22,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:22,144 INFO L470 AbstractCegarLoop]: Abstraction has 27566 states and 35017 transitions. [2021-11-03 04:26:22,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:22,144 INFO L276 IsEmpty]: Start isEmpty. Operand 27566 states and 35017 transitions. [2021-11-03 04:26:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-03 04:26:22,150 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:22,151 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:22,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:22,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:22,352 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:26:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:22,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1686858098, now seen corresponding path program 1 times [2021-11-03 04:26:22,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:22,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582728634] [2021-11-03 04:26:22,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:22,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:22,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:22,361 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:22,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-03 04:26:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:31,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 3371 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:26:31,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:26:32,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:32,929 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:26:32,929 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:32,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582728634] [2021-11-03 04:26:32,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582728634] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:32,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:32,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:26:32,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770961251] [2021-11-03 04:26:32,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:26:32,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:32,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:26:32,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:26:32,932 INFO L87 Difference]: Start difference. First operand 27566 states and 35017 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:41,487 INFO L93 Difference]: Finished difference Result 54972 states and 69854 transitions. [2021-11-03 04:26:41,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:26:41,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2021-11-03 04:26:41,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:41,527 INFO L225 Difference]: With dead ends: 54972 [2021-11-03 04:26:41,527 INFO L226 Difference]: Without dead ends: 27570 [2021-11-03 04:26:41,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 483 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 04:26:41,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27570 states. [2021-11-03 04:26:47,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27570 to 27570. [2021-11-03 04:26:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27570 states, 27531 states have (on average 1.2711852094003124) internal successors, (34997), 27553 states have internal predecessors, (34997), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:26:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27570 states to 27570 states and 35021 transitions. [2021-11-03 04:26:48,035 INFO L78 Accepts]: Start accepts. Automaton has 27570 states and 35021 transitions. Word has length 243 [2021-11-03 04:26:48,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:48,036 INFO L470 AbstractCegarLoop]: Abstraction has 27570 states and 35021 transitions. [2021-11-03 04:26:48,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:48,036 INFO L276 IsEmpty]: Start isEmpty. Operand 27570 states and 35021 transitions. [2021-11-03 04:26:48,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-03 04:26:48,042 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:48,042 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:48,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:48,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:48,243 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:26:48,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1011624488, now seen corresponding path program 1 times [2021-11-03 04:26:48,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:48,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547491013] [2021-11-03 04:26:48,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:48,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:48,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:48,249 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:48,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-03 04:26:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:57,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 3393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:26:57,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:26:57,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:26:58,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:58,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547491013] [2021-11-03 04:26:58,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547491013] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:58,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:58,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:26:58,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911699989] [2021-11-03 04:26:58,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:26:58,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:58,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:26:58,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:26:58,369 INFO L87 Difference]: Start difference. First operand 27570 states and 35021 transitions. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:56,315 INFO L93 Difference]: Finished difference Result 209318 states and 265774 transitions. [2021-11-03 04:27:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:27:56,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2021-11-03 04:27:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:56,691 INFO L225 Difference]: With dead ends: 209318 [2021-11-03 04:27:56,691 INFO L226 Difference]: Without dead ends: 181912 [2021-11-03 04:27:56,753 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:27:56,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181912 states. [2021-11-03 04:28:05,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181912 to 27578. [2021-11-03 04:28:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27578 states, 27539 states have (on average 1.2711064308798432) internal successors, (35005), 27561 states have internal predecessors, (35005), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:28:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27578 states to 27578 states and 35029 transitions. [2021-11-03 04:28:05,257 INFO L78 Accepts]: Start accepts. Automaton has 27578 states and 35029 transitions. Word has length 244 [2021-11-03 04:28:05,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:28:05,257 INFO L470 AbstractCegarLoop]: Abstraction has 27578 states and 35029 transitions. [2021-11-03 04:28:05,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:05,258 INFO L276 IsEmpty]: Start isEmpty. Operand 27578 states and 35029 transitions. [2021-11-03 04:28:05,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-03 04:28:05,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:05,265 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:05,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-03 04:28:05,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:28:05,466 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:28:05,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:05,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1765278086, now seen corresponding path program 1 times [2021-11-03 04:28:05,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:28:05,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417748192] [2021-11-03 04:28:05,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:05,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:28:05,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:28:05,472 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:28:05,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-03 04:28:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:14,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 3378 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:28:14,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:15,013 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:28:15,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:28:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:28:15,518 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:28:15,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417748192] [2021-11-03 04:28:15,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417748192] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:28:15,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:28:15,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:28:15,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601284181] [2021-11-03 04:28:15,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:28:15,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:28:15,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:28:15,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:28:15,521 INFO L87 Difference]: Start difference. First operand 27578 states and 35029 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:22,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:28:22,666 INFO L93 Difference]: Finished difference Result 54996 states and 69890 transitions. [2021-11-03 04:28:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:28:22,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2021-11-03 04:28:22,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:28:22,727 INFO L225 Difference]: With dead ends: 54996 [2021-11-03 04:28:22,727 INFO L226 Difference]: Without dead ends: 27582 [2021-11-03 04:28:22,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 489 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 04:28:22,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27582 states. [2021-11-03 04:28:30,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27582 to 27582. [2021-11-03 04:28:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27582 states, 27543 states have (on average 1.2710670587808155) internal successors, (35009), 27565 states have internal predecessors, (35009), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:28:30,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27582 states to 27582 states and 35033 transitions. [2021-11-03 04:28:30,244 INFO L78 Accepts]: Start accepts. Automaton has 27582 states and 35033 transitions. Word has length 246 [2021-11-03 04:28:30,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:28:30,244 INFO L470 AbstractCegarLoop]: Abstraction has 27582 states and 35033 transitions. [2021-11-03 04:28:30,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:30,245 INFO L276 IsEmpty]: Start isEmpty. Operand 27582 states and 35033 transitions. [2021-11-03 04:28:30,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-03 04:28:30,251 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:30,252 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:30,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-03 04:28:30,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:28:30,452 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:28:30,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:30,453 INFO L85 PathProgramCache]: Analyzing trace with hash -284109756, now seen corresponding path program 1 times [2021-11-03 04:28:30,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:28:30,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564984537] [2021-11-03 04:28:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:30,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:28:30,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:28:30,458 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:28:30,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-03 04:28:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:39,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 3380 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:28:39,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:28:40,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:28:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:28:40,571 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:28:40,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564984537] [2021-11-03 04:28:40,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564984537] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:28:40,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:28:40,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:28:40,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599034773] [2021-11-03 04:28:40,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:28:40,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:28:40,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:28:40,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:28:40,573 INFO L87 Difference]: Start difference. First operand 27582 states and 35033 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:47,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:28:47,870 INFO L93 Difference]: Finished difference Result 55016 states and 69914 transitions. [2021-11-03 04:28:47,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:28:47,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2021-11-03 04:28:47,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:28:47,927 INFO L225 Difference]: With dead ends: 55016 [2021-11-03 04:28:47,928 INFO L226 Difference]: Without dead ends: 27598 [2021-11-03 04:28:47,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 488 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 04:28:47,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27598 states. [2021-11-03 04:28:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27598 to 27598. [2021-11-03 04:28:55,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27598 states, 27559 states have (on average 1.2709096846765122) internal successors, (35025), 27581 states have internal predecessors, (35025), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:28:55,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27598 states to 27598 states and 35049 transitions. [2021-11-03 04:28:55,593 INFO L78 Accepts]: Start accepts. Automaton has 27598 states and 35049 transitions. Word has length 246 [2021-11-03 04:28:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:28:55,594 INFO L470 AbstractCegarLoop]: Abstraction has 27598 states and 35049 transitions. [2021-11-03 04:28:55,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 27598 states and 35049 transitions. [2021-11-03 04:28:55,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-03 04:28:55,602 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:55,602 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:55,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-11-03 04:28:55,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:28:55,811 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:28:55,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:55,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1172700764, now seen corresponding path program 1 times [2021-11-03 04:28:55,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:28:55,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520261821] [2021-11-03 04:28:55,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:55,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:28:55,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:28:55,816 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:28:55,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-03 04:29:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:05,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 3404 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:29:05,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:29:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:29:06,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:29:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:29:06,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:29:06,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520261821] [2021-11-03 04:29:06,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520261821] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:29:06,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [350238397] [2021-11-03 04:29:06,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:29:06,950 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:29:06,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:29:06,951 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:29:06,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-11-03 04:29:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:17,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 3404 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:29:17,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:29:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:29:18,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:29:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:29:18,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [350238397] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:29:18,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911054527] [2021-11-03 04:29:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:29:18,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:29:18,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:29:18,542 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:29:18,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-03 04:29:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:24,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 3404 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:29:24,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:29:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-03 04:29:26,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:29:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-03 04:29:29,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911054527] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-03 04:29:29,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-11-03 04:29:29,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5, 5] total 15 [2021-11-03 04:29:29,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881958073] [2021-11-03 04:29:29,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:29:29,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:29:29,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:29:29,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:29:29,305 INFO L87 Difference]: Start difference. First operand 27598 states and 35049 transitions. Second operand has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 5 states have internal predecessors, (229), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:29:37,564 INFO L93 Difference]: Finished difference Result 27622 states and 35089 transitions. [2021-11-03 04:29:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:29:37,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 5 states have internal predecessors, (229), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2021-11-03 04:29:37,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:29:37,623 INFO L225 Difference]: With dead ends: 27622 [2021-11-03 04:29:37,623 INFO L226 Difference]: Without dead ends: 27620 [2021-11-03 04:29:37,631 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1507 GetRequests, 1493 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:29:37,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27620 states. [2021-11-03 04:29:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27620 to 27596. [2021-11-03 04:29:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27596 states, 27558 states have (on average 1.2707743667900429) internal successors, (35020), 27579 states have internal predecessors, (35020), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:29:45,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27596 states to 27596 states and 35044 transitions. [2021-11-03 04:29:45,267 INFO L78 Accepts]: Start accepts. Automaton has 27596 states and 35044 transitions. Word has length 252 [2021-11-03 04:29:45,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:29:45,268 INFO L470 AbstractCegarLoop]: Abstraction has 27596 states and 35044 transitions. [2021-11-03 04:29:45,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 5 states have internal predecessors, (229), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:29:45,268 INFO L276 IsEmpty]: Start isEmpty. Operand 27596 states and 35044 transitions. [2021-11-03 04:29:45,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-03 04:29:45,275 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:29:45,275 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:45,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-03 04:29:45,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2021-11-03 04:29:45,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-11-03 04:29:45,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:29:45,876 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:29:45,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:29:45,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2139504494, now seen corresponding path program 1 times [2021-11-03 04:29:45,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:29:45,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725819213] [2021-11-03 04:29:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:29:45,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:29:45,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:29:45,882 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:29:45,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-03 04:29:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:55,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 3363 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:29:55,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:29:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:29:56,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:29:56,824 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:29:56,824 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:29:56,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725819213] [2021-11-03 04:29:56,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725819213] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:29:56,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:29:56,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:29:56,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591047745] [2021-11-03 04:29:56,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:29:56,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:29:56,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:29:56,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:29:56,827 INFO L87 Difference]: Start difference. First operand 27596 states and 35044 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-03 04:30:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:30:04,242 INFO L93 Difference]: Finished difference Result 55068 states and 69968 transitions. [2021-11-03 04:30:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:30:04,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 258 [2021-11-03 04:30:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:30:04,284 INFO L225 Difference]: With dead ends: 55068 [2021-11-03 04:30:04,284 INFO L226 Difference]: Without dead ends: 27636 [2021-11-03 04:30:04,303 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 513 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 04:30:04,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27636 states. [2021-11-03 04:30:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27636 to 27620. [2021-11-03 04:30:11,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27620 states, 27582 states have (on average 1.2706837792763397) internal successors, (35048), 27603 states have internal predecessors, (35048), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-03 04:30:11,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27620 states to 27620 states and 35072 transitions. [2021-11-03 04:30:11,707 INFO L78 Accepts]: Start accepts. Automaton has 27620 states and 35072 transitions. Word has length 258 [2021-11-03 04:30:11,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:30:11,708 INFO L470 AbstractCegarLoop]: Abstraction has 27620 states and 35072 transitions. [2021-11-03 04:30:11,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-03 04:30:11,708 INFO L276 IsEmpty]: Start isEmpty. Operand 27620 states and 35072 transitions. [2021-11-03 04:30:11,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-03 04:30:11,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:30:11,714 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:11,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-03 04:30:11,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:30:11,931 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-03 04:30:11,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:30:11,931 INFO L85 PathProgramCache]: Analyzing trace with hash -405400044, now seen corresponding path program 1 times [2021-11-03 04:30:11,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:30:11,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941107735] [2021-11-03 04:30:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:30:11,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:30:11,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:30:11,939 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:30:11,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e2a5b5e-16b1-42da-b177-ee156ab3b9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-03 04:30:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:30:21,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 3363 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:30:21,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:30:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:30:22,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:30:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 04:30:23,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:30:23,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941107735] [2021-11-03 04:30:23,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941107735] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:30:23,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:30:23,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-03 04:30:23,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306411432] [2021-11-03 04:30:23,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:30:23,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:30:23,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:30:23,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:30:23,270 INFO L87 Difference]: Start difference. First operand 27620 states and 35072 transitions. Second operand has 9 states, 9 states have (on average 26.666666666666668) internal successors, (240), 9 states have internal predecessors, (240), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)