./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI --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 a13b8423c8adb1016504f40821b85ca260e7a8c1efbef1b406f93b0c69b5f932 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:49:56,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:49:56,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:49:56,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:49:56,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:49:56,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:49:56,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:49:56,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:49:56,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:49:56,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:49:56,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:49:56,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:49:56,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:49:56,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:49:56,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:49:56,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:49:56,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:49:56,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:49:56,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:49:56,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:49:56,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:49:56,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:49:56,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:49:56,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:49:56,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:49:56,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:49:56,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:49:56,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:49:56,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:49:56,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:49:56,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:49:56,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:49:56,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:49:56,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:49:56,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:49:56,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:49:56,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:49:56,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:49:56,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:49:56,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:49:56,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:49:56,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:49:56,874 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:49:56,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:49:56,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:49:56,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:49:56,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:49:56,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:49:56,876 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:49:56,877 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:49:56,877 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:49:56,877 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:49:56,878 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:49:56,878 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:49:56,878 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:49:56,878 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:49:56,879 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:49:56,879 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:49:56,879 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:49:56,879 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:49:56,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:49:56,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:49:56,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:49:56,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:49:56,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:49:56,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:49:56,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:49:56,881 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:49:56,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:49:56,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:49:56,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:49:56,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:49:56,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:49:56,883 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:49:56,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:49:56,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:49:56,884 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:49:56,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:49:56,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:49:56,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:49:56,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a13b8423c8adb1016504f40821b85ca260e7a8c1efbef1b406f93b0c69b5f932 [2022-11-03 01:49:57,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:49:57,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:49:57,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:49:57,214 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:49:57,215 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:49:57,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c [2022-11-03 01:49:57,275 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/data/0e5427d49/1663c0bf8327413abc71f5102a3ccbdf/FLAG71e8b1771 [2022-11-03 01:49:57,852 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:49:57,853 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c [2022-11-03 01:49:57,873 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/data/0e5427d49/1663c0bf8327413abc71f5102a3ccbdf/FLAG71e8b1771 [2022-11-03 01:49:58,141 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/data/0e5427d49/1663c0bf8327413abc71f5102a3ccbdf [2022-11-03 01:49:58,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:49:58,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:49:58,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:49:58,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:49:58,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:49:58,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:49:58" (1/1) ... [2022-11-03 01:49:58,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20eff381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:58, skipping insertion in model container [2022-11-03 01:49:58,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:49:58" (1/1) ... [2022-11-03 01:49:58,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:49:58,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:49:58,454 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c[1116,1129] [2022-11-03 01:49:58,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:49:58,660 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:49:58,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c[1116,1129] [2022-11-03 01:49:58,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:49:58,813 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:49:58,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:58 WrapperNode [2022-11-03 01:49:58,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:49:58,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:49:58,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:49:58,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:49:58,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:58" (1/1) ... [2022-11-03 01:49:58,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:58" (1/1) ... [2022-11-03 01:49:58,940 INFO L138 Inliner]: procedures = 11, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 780 [2022-11-03 01:49:58,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:49:58,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:49:58,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:49:58,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:49:58,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:58" (1/1) ... [2022-11-03 01:49:58,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:58" (1/1) ... [2022-11-03 01:49:58,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:58" (1/1) ... [2022-11-03 01:49:58,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:58" (1/1) ... [2022-11-03 01:49:58,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:58" (1/1) ... [2022-11-03 01:49:58,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:58" (1/1) ... [2022-11-03 01:49:59,003 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:58" (1/1) ... [2022-11-03 01:49:59,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:58" (1/1) ... [2022-11-03 01:49:59,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:49:59,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:49:59,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:49:59,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:49:59,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:58" (1/1) ... [2022-11-03 01:49:59,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:49:59,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:49:59,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:49:59,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:49:59,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:49:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:49:59,129 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:49:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:49:59,378 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:49:59,381 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:50:00,619 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:50:01,747 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:50:01,747 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:50:01,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:50:01 BoogieIcfgContainer [2022-11-03 01:50:01,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:50:01,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:50:01,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:50:01,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:50:01,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:49:58" (1/3) ... [2022-11-03 01:50:01,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5887ccd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:50:01, skipping insertion in model container [2022-11-03 01:50:01,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:58" (2/3) ... [2022-11-03 01:50:01,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5887ccd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:50:01, skipping insertion in model container [2022-11-03 01:50:01,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:50:01" (3/3) ... [2022-11-03 01:50:01,761 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c [2022-11-03 01:50:01,781 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:50:01,781 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:50:01,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:50:01,862 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c0da048, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:50:01,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:50:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-11-03 01:50:01,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:50:01,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:01,877 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:01,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:01,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:01,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1445781829, now seen corresponding path program 1 times [2022-11-03 01:50:01,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:01,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267963555] [2022-11-03 01:50:01,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:01,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 01:50:06,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:06,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267963555] [2022-11-03 01:50:06,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267963555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:06,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:06,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:50:06,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343085114] [2022-11-03 01:50:06,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:06,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:50:06,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:06,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:50:06,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:50:06,994 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:08,227 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2022-11-03 01:50:08,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:50:08,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 16 [2022-11-03 01:50:08,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:08,238 INFO L225 Difference]: With dead ends: 37 [2022-11-03 01:50:08,238 INFO L226 Difference]: Without dead ends: 23 [2022-11-03 01:50:08,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:50:08,247 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:08,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 39 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 01:50:08,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-03 01:50:08,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-11-03 01:50:08,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:50:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-11-03 01:50:08,295 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 16 [2022-11-03 01:50:08,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:08,297 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-11-03 01:50:08,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-11-03 01:50:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 01:50:08,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:08,301 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 01:50:08,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:50:08,301 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:08,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1324141254, now seen corresponding path program 1 times [2022-11-03 01:50:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:08,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927385693] [2022-11-03 01:50:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:08,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:50:25,875 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 01:50:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:50:40,662 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 01:50:40,664 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 01:50:40,667 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 01:50:40,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:50:40,674 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 01:50:40,679 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:50:40,833 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 01:50:40,833 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 01:50:40,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:50:40 BoogieIcfgContainer [2022-11-03 01:50:40,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:50:40,884 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:50:40,884 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:50:40,884 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:50:40,885 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:50:01" (3/4) ... [2022-11-03 01:50:40,889 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 01:50:40,890 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:50:40,892 INFO L158 Benchmark]: Toolchain (without parser) took 42743.45ms. Allocated memory was 121.6MB in the beginning and 1.0GB in the end (delta: 880.8MB). Free memory was 82.7MB in the beginning and 410.1MB in the end (delta: -327.4MB). Peak memory consumption was 552.8MB. Max. memory is 16.1GB. [2022-11-03 01:50:40,893 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 121.6MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:50:40,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 663.10ms. Allocated memory is still 121.6MB. Free memory was 82.5MB in the beginning and 82.3MB in the end (delta: 204.1kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 01:50:40,901 INFO L158 Benchmark]: Boogie Procedure Inliner took 125.04ms. Allocated memory is still 121.6MB. Free memory was 82.3MB in the beginning and 71.3MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 01:50:40,901 INFO L158 Benchmark]: Boogie Preprocessor took 96.06ms. Allocated memory is still 121.6MB. Free memory was 71.3MB in the beginning and 65.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 01:50:40,902 INFO L158 Benchmark]: RCFGBuilder took 2712.91ms. Allocated memory was 121.6MB in the beginning and 205.5MB in the end (delta: 83.9MB). Free memory was 65.0MB in the beginning and 97.3MB in the end (delta: -32.3MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2022-11-03 01:50:40,903 INFO L158 Benchmark]: TraceAbstraction took 39130.25ms. Allocated memory was 205.5MB in the beginning and 1.0GB in the end (delta: 796.9MB). Free memory was 97.3MB in the beginning and 411.2MB in the end (delta: -313.9MB). Peak memory consumption was 543.4MB. Max. memory is 16.1GB. [2022-11-03 01:50:40,903 INFO L158 Benchmark]: Witness Printer took 5.75ms. Allocated memory is still 1.0GB. Free memory is still 410.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:50:40,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 121.6MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 663.10ms. Allocated memory is still 121.6MB. Free memory was 82.5MB in the beginning and 82.3MB in the end (delta: 204.1kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 125.04ms. Allocated memory is still 121.6MB. Free memory was 82.3MB in the beginning and 71.3MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.06ms. Allocated memory is still 121.6MB. Free memory was 71.3MB in the beginning and 65.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2712.91ms. Allocated memory was 121.6MB in the beginning and 205.5MB in the end (delta: 83.9MB). Free memory was 65.0MB in the beginning and 97.3MB in the end (delta: -32.3MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. * TraceAbstraction took 39130.25ms. Allocated memory was 205.5MB in the beginning and 1.0GB in the end (delta: 796.9MB). Free memory was 97.3MB in the beginning and 411.2MB in the end (delta: -313.9MB). Peak memory consumption was 543.4MB. Max. memory is 16.1GB. * Witness Printer took 5.75ms. Allocated memory is still 1.0GB. Free memory is still 410.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 289, overapproximation of bitwiseComplement at line 154, overapproximation of bitwiseAnd at line 157. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 5); [L32] const SORT_11 msb_SORT_11 = (SORT_11)1 << (5 - 1); [L34] const SORT_13 mask_SORT_13 = (SORT_13)-1 >> (sizeof(SORT_13) * 8 - 4); [L35] const SORT_13 msb_SORT_13 = (SORT_13)1 << (4 - 1); [L37] const SORT_19 mask_SORT_19 = (SORT_19)-1 >> (sizeof(SORT_19) * 8 - 3); [L38] const SORT_19 msb_SORT_19 = (SORT_19)1 << (3 - 1); [L40] const SORT_40 mask_SORT_40 = (SORT_40)-1 >> (sizeof(SORT_40) * 8 - 2); [L41] const SORT_40 msb_SORT_40 = (SORT_40)1 << (2 - 1); [L43] const SORT_13 var_15 = 8; [L44] const SORT_19 var_20 = 7; [L45] const SORT_19 var_25 = 6; [L46] const SORT_19 var_30 = 5; [L47] const SORT_19 var_35 = 4; [L48] const SORT_40 var_41 = 3; [L49] const SORT_40 var_46 = 2; [L50] const SORT_1 var_51 = 1; [L51] const SORT_13 var_64 = 9; [L52] const SORT_11 var_81 = 0; [L53] const SORT_1 var_111 = 0; [L54] const SORT_3 var_268 = 0; [L56] SORT_1 input_2; [L57] SORT_3 input_4; [L58] SORT_1 input_5; [L59] SORT_1 input_6; [L60] SORT_1 input_7; [L61] SORT_1 input_8; [L62] SORT_3 input_9; [L63] SORT_1 input_109; [L65] SORT_3 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L66] SORT_11 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_11; [L67] SORT_3 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L68] SORT_3 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L69] SORT_3 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L70] SORT_3 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L71] SORT_3 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L72] SORT_3 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L73] SORT_3 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L74] SORT_3 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L75] SORT_11 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_11; [L76] SORT_1 state_68 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_11 state_72 = __VERIFIER_nondet_uchar() & mask_SORT_11; [L79] SORT_3 state_87 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L80] SORT_1 state_91 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_11 state_136 = __VERIFIER_nondet_uchar() & mask_SORT_11; [L83] SORT_1 init_92_arg_1 = var_51; [L84] state_91 = init_92_arg_1 VAL [init_92_arg_1=1, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=255, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=128, msb_SORT_40=2, state_10=0, state_12=0, state_136=250, state_18=0, state_24=16, state_29=0, state_34=0, state_39=0, state_45=0, state_50=0, state_55=0, state_60=0, state_68=0, state_69=0, state_72=0, state_87=0, state_91=1, var_111=0, var_15=8, var_20=7, var_25=6, var_268=0, var_30=5, var_35=4, var_41=3, var_46=2, var_51=1, var_64=9, var_81=0] [L87] input_2 = __VERIFIER_nondet_uchar() [L88] input_4 = __VERIFIER_nondet_uchar() [L89] input_5 = __VERIFIER_nondet_uchar() [L90] input_6 = __VERIFIER_nondet_uchar() [L91] input_7 = __VERIFIER_nondet_uchar() [L92] input_7 = input_7 & mask_SORT_1 [L93] input_8 = __VERIFIER_nondet_uchar() [L94] input_9 = __VERIFIER_nondet_uchar() [L95] input_109 = __VERIFIER_nondet_uchar() [L97] SORT_1 var_93_arg_0 = input_7; [L98] SORT_1 var_93_arg_1 = state_91; [L99] SORT_1 var_93 = var_93_arg_0 == var_93_arg_1; [L100] SORT_1 var_94_arg_0 = var_51; [L101] SORT_1 var_94 = ~var_94_arg_0; [L102] SORT_1 var_95_arg_0 = var_93; [L103] SORT_1 var_95_arg_1 = var_94; [L104] SORT_1 var_95 = var_95_arg_0 | var_95_arg_1; [L105] var_95 = var_95 & mask_SORT_1 [L106] SORT_1 constr_96_arg_0 = var_95; VAL [constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=1, input_4=0, input_5=252, input_6=254, input_7=0, input_8=3, input_9=255, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=255, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=128, msb_SORT_40=2, state_10=0, state_12=0, state_136=250, state_18=0, state_24=16, state_29=0, state_34=0, state_39=0, state_45=0, state_50=0, state_55=0, state_60=0, state_68=0, state_69=0, state_72=0, state_87=0, state_91=1, var_111=0, var_15=8, var_20=7, var_25=6, var_268=0, var_30=5, var_35=4, var_41=3, var_46=2, var_51=1, var_64=9, var_81=0, var_93=0, var_93_arg_0=0, var_93_arg_1=1, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=255] [L107] CALL assume_abort_if_not(constr_96_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) [L107] RET assume_abort_if_not(constr_96_arg_0) VAL [constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=1, input_4=0, input_5=252, input_6=254, input_7=0, input_8=3, input_9=255, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=255, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=128, msb_SORT_40=2, state_10=0, state_12=0, state_136=250, state_18=0, state_24=16, state_29=0, state_34=0, state_39=0, state_45=0, state_50=0, state_55=0, state_60=0, state_68=0, state_69=0, state_72=0, state_87=0, state_91=1, var_111=0, var_15=8, var_20=7, var_25=6, var_268=0, var_30=5, var_35=4, var_41=3, var_46=2, var_51=1, var_64=9, var_81=0, var_93=0, var_93_arg_0=0, var_93_arg_1=1, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=255] [L108] SORT_13 var_65_arg_0 = var_64; [L109] var_65_arg_0 = var_65_arg_0 & mask_SORT_13 [L110] SORT_11 var_65 = var_65_arg_0; [L111] SORT_11 var_66_arg_0 = state_60; [L112] SORT_11 var_66_arg_1 = var_65; [L113] SORT_1 var_66 = var_66_arg_0 == var_66_arg_1; [L114] SORT_1 var_97_arg_0 = var_66; [L115] SORT_1 var_97 = ~var_97_arg_0; [L116] SORT_1 var_98_arg_0 = input_6; [L117] SORT_1 var_98 = ~var_98_arg_0; [L118] SORT_1 var_99_arg_0 = var_97; [L119] SORT_1 var_99_arg_1 = var_98; [L120] SORT_1 var_99 = var_99_arg_0 | var_99_arg_1; [L121] SORT_1 var_100_arg_0 = var_51; [L122] SORT_1 var_100 = ~var_100_arg_0; [L123] SORT_1 var_101_arg_0 = var_99; [L124] SORT_1 var_101_arg_1 = var_100; [L125] SORT_1 var_101 = var_101_arg_0 | var_101_arg_1; [L126] var_101 = var_101 & mask_SORT_1 [L127] SORT_1 constr_102_arg_0 = var_101; VAL [constr_102_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=1, input_4=0, input_5=252, input_6=254, input_7=0, input_8=3, input_9=255, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=255, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=128, msb_SORT_40=2, state_10=0, state_12=0, state_136=250, state_18=0, state_24=16, state_29=0, state_34=0, state_39=0, state_45=0, state_50=0, state_55=0, state_60=0, state_68=0, state_69=0, state_72=0, state_87=0, state_91=1, var_100=1, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=1, var_111=0, var_15=8, var_20=7, var_25=6, var_268=0, var_30=5, var_35=4, var_41=3, var_46=2, var_51=1, var_64=9, var_65=9, var_65_arg_0=9, var_66=0, var_66_arg_0=0, var_66_arg_1=9, var_81=0, var_93=0, var_93_arg_0=0, var_93_arg_1=1, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=255, var_97=1, var_97_arg_0=0, var_98=1, var_98_arg_0=254, var_99=1, var_99_arg_0=1, var_99_arg_1=1] [L128] CALL assume_abort_if_not(constr_102_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) [L128] RET assume_abort_if_not(constr_102_arg_0) VAL [constr_102_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=1, input_4=0, input_5=252, input_6=254, input_7=0, input_8=3, input_9=255, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=255, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=128, msb_SORT_40=2, state_10=0, state_12=0, state_136=250, state_18=0, state_24=16, state_29=0, state_34=0, state_39=0, state_45=0, state_50=0, state_55=0, state_60=0, state_68=0, state_69=0, state_72=0, state_87=0, state_91=1, var_100=1, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=1, var_111=0, var_15=8, var_20=7, var_25=6, var_268=0, var_30=5, var_35=4, var_41=3, var_46=2, var_51=1, var_64=9, var_65=9, var_65_arg_0=9, var_66=0, var_66_arg_0=0, var_66_arg_1=9, var_81=0, var_93=0, var_93_arg_0=0, var_93_arg_1=1, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=255, var_97=1, var_97_arg_0=0, var_98=1, var_98_arg_0=254, var_99=1, var_99_arg_0=1, var_99_arg_1=1] [L129] SORT_11 var_61_arg_0 = state_60; [L130] SORT_1 var_61 = var_61_arg_0 != 0; [L131] SORT_1 var_62_arg_0 = var_61; [L132] SORT_1 var_62 = ~var_62_arg_0; [L133] SORT_1 var_103_arg_0 = var_62; [L134] SORT_1 var_103 = ~var_103_arg_0; [L135] SORT_1 var_104_arg_0 = input_5; [L136] SORT_1 var_104 = ~var_104_arg_0; [L137] SORT_1 var_105_arg_0 = var_103; [L138] SORT_1 var_105_arg_1 = var_104; [L139] SORT_1 var_105 = var_105_arg_0 | var_105_arg_1; [L140] SORT_1 var_106_arg_0 = var_51; [L141] SORT_1 var_106 = ~var_106_arg_0; [L142] SORT_1 var_107_arg_0 = var_105; [L143] SORT_1 var_107_arg_1 = var_106; [L144] SORT_1 var_107 = var_107_arg_0 | var_107_arg_1; [L145] var_107 = var_107 & mask_SORT_1 [L146] SORT_1 constr_108_arg_0 = var_107; VAL [constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=1, input_4=0, input_5=252, input_6=254, input_7=0, input_8=3, input_9=255, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=255, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=128, msb_SORT_40=2, state_10=0, state_12=0, state_136=250, state_18=0, state_24=16, state_29=0, state_34=0, state_39=0, state_45=0, state_50=0, state_55=0, state_60=0, state_68=0, state_69=0, state_72=0, state_87=0, state_91=1, var_100=1, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=1, var_103=249, var_103_arg_0=2, var_104=0, var_104_arg_0=252, var_105=0, var_105_arg_0=249, var_105_arg_1=0, var_106=1, var_106_arg_0=1, var_107=1, var_107_arg_0=0, var_107_arg_1=1, var_111=0, var_15=8, var_20=7, var_25=6, var_268=0, var_30=5, var_35=4, var_41=3, var_46=2, var_51=1, var_61=0, var_61_arg_0=0, var_62=2, var_62_arg_0=0, var_64=9, var_65=9, var_65_arg_0=9, var_66=0, var_66_arg_0=0, var_66_arg_1=9, var_81=0, var_93=0, var_93_arg_0=0, var_93_arg_1=1, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=255, var_97=1, var_97_arg_0=0, var_98=1, var_98_arg_0=254, var_99=1, var_99_arg_0=1, var_99_arg_1=1] [L147] CALL assume_abort_if_not(constr_108_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) [L147] RET assume_abort_if_not(constr_108_arg_0) VAL [constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=1, input_4=0, input_5=252, input_6=254, input_7=0, input_8=3, input_9=255, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=255, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=128, msb_SORT_40=2, state_10=0, state_12=0, state_136=250, state_18=0, state_24=16, state_29=0, state_34=0, state_39=0, state_45=0, state_50=0, state_55=0, state_60=0, state_68=0, state_69=0, state_72=0, state_87=0, state_91=1, var_100=1, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=1, var_103=249, var_103_arg_0=2, var_104=0, var_104_arg_0=252, var_105=0, var_105_arg_0=249, var_105_arg_1=0, var_106=1, var_106_arg_0=1, var_107=1, var_107_arg_0=0, var_107_arg_1=1, var_111=0, var_15=8, var_20=7, var_25=6, var_268=0, var_30=5, var_35=4, var_41=3, var_46=2, var_51=1, var_61=0, var_61_arg_0=0, var_62=2, var_62_arg_0=0, var_64=9, var_65=9, var_65_arg_0=9, var_66=0, var_66_arg_0=0, var_66_arg_1=9, var_81=0, var_93=0, var_93_arg_0=0, var_93_arg_1=1, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=255, var_97=1, var_97_arg_0=0, var_98=1, var_98_arg_0=254, var_99=1, var_99_arg_0=1, var_99_arg_1=1] [L149] SORT_1 var_112_arg_0 = state_91; [L150] SORT_1 var_112_arg_1 = var_111; [L151] SORT_1 var_112_arg_2 = var_51; [L152] EXPR var_112_arg_0 ? var_112_arg_1 : var_112_arg_2 [L152] SORT_1 var_112 = var_112_arg_0 ? var_112_arg_1 : var_112_arg_2; [L153] SORT_1 var_70_arg_0 = state_69; [L154] SORT_1 var_70 = ~var_70_arg_0; [L155] SORT_1 var_71_arg_0 = state_68; [L156] SORT_1 var_71_arg_1 = var_70; [L157] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L158] SORT_11 var_73_arg_0 = state_72; [L159] SORT_1 var_73 = var_73_arg_0 != 0; [L160] SORT_1 var_74_arg_0 = var_71; [L161] SORT_1 var_74_arg_1 = var_73; [L162] SORT_1 var_74 = var_74_arg_0 & var_74_arg_1; [L163] SORT_1 var_75_arg_0 = state_68; [L164] SORT_1 var_75 = ~var_75_arg_0; [L165] SORT_1 var_76_arg_0 = input_6; [L166] SORT_1 var_76_arg_1 = var_75; [L167] SORT_1 var_76 = var_76_arg_0 & var_76_arg_1; [L168] SORT_1 var_77_arg_0 = var_76; [L169] var_77_arg_0 = var_77_arg_0 & mask_SORT_1 [L170] SORT_11 var_77 = var_77_arg_0; [L171] SORT_11 var_78_arg_0 = state_72; [L172] SORT_11 var_78_arg_1 = var_77; [L173] SORT_11 var_78 = var_78_arg_0 + var_78_arg_1; [L174] SORT_1 var_79_arg_0 = input_5; [L175] var_79_arg_0 = var_79_arg_0 & mask_SORT_1 [L176] SORT_11 var_79 = var_79_arg_0; [L177] SORT_11 var_80_arg_0 = var_78; [L178] SORT_11 var_80_arg_1 = var_79; [L179] SORT_11 var_80 = var_80_arg_0 - var_80_arg_1; [L180] SORT_1 var_82_arg_0 = input_7; [L181] SORT_11 var_82_arg_1 = var_81; [L182] SORT_11 var_82_arg_2 = var_80; [L183] EXPR var_82_arg_0 ? var_82_arg_1 : var_82_arg_2 [L183] SORT_11 var_82 = var_82_arg_0 ? var_82_arg_1 : var_82_arg_2; [L184] var_82 = var_82 & mask_SORT_11 [L185] SORT_11 var_83_arg_0 = var_82; [L186] SORT_1 var_83 = var_83_arg_0 != 0; [L187] SORT_1 var_84_arg_0 = var_83; [L188] SORT_1 var_84 = ~var_84_arg_0; [L189] SORT_1 var_85_arg_0 = var_74; [L190] SORT_1 var_85_arg_1 = var_84; [L191] SORT_1 var_85 = var_85_arg_0 & var_85_arg_1; [L192] SORT_1 var_86_arg_0 = var_85; [L193] SORT_1 var_86 = ~var_86_arg_0; [L194] SORT_11 var_14_arg_0 = state_12; [L195] SORT_13 var_14 = var_14_arg_0 >> 0; [L196] var_14 = var_14 & mask_SORT_13 [L197] SORT_13 var_56_arg_0 = var_14; [L198] SORT_1 var_56 = var_56_arg_0 != 0; [L199] SORT_1 var_57_arg_0 = var_56; [L200] SORT_1 var_57 = ~var_57_arg_0; [L201] var_57 = var_57 & mask_SORT_1 [L202] SORT_1 var_52_arg_0 = var_51; [L203] var_52_arg_0 = var_52_arg_0 & mask_SORT_1 [L204] SORT_13 var_52 = var_52_arg_0; [L205] SORT_13 var_53_arg_0 = var_14; [L206] SORT_13 var_53_arg_1 = var_52; [L207] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L208] SORT_40 var_47_arg_0 = var_46; [L209] var_47_arg_0 = var_47_arg_0 & mask_SORT_40 [L210] SORT_13 var_47 = var_47_arg_0; [L211] SORT_13 var_48_arg_0 = var_14; [L212] SORT_13 var_48_arg_1 = var_47; [L213] SORT_1 var_48 = var_48_arg_0 == var_48_arg_1; [L214] SORT_40 var_42_arg_0 = var_41; [L215] var_42_arg_0 = var_42_arg_0 & mask_SORT_40 [L216] SORT_13 var_42 = var_42_arg_0; [L217] SORT_13 var_43_arg_0 = var_14; [L218] SORT_13 var_43_arg_1 = var_42; [L219] SORT_1 var_43 = var_43_arg_0 == var_43_arg_1; [L220] SORT_19 var_36_arg_0 = var_35; [L221] var_36_arg_0 = var_36_arg_0 & mask_SORT_19 [L222] SORT_13 var_36 = var_36_arg_0; [L223] SORT_13 var_37_arg_0 = var_14; [L224] SORT_13 var_37_arg_1 = var_36; [L225] SORT_1 var_37 = var_37_arg_0 == var_37_arg_1; [L226] SORT_19 var_31_arg_0 = var_30; [L227] var_31_arg_0 = var_31_arg_0 & mask_SORT_19 [L228] SORT_13 var_31 = var_31_arg_0; [L229] SORT_13 var_32_arg_0 = var_14; [L230] SORT_13 var_32_arg_1 = var_31; [L231] SORT_1 var_32 = var_32_arg_0 == var_32_arg_1; [L232] SORT_19 var_26_arg_0 = var_25; [L233] var_26_arg_0 = var_26_arg_0 & mask_SORT_19 [L234] SORT_13 var_26 = var_26_arg_0; [L235] SORT_13 var_27_arg_0 = var_14; [L236] SORT_13 var_27_arg_1 = var_26; [L237] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L238] SORT_19 var_21_arg_0 = var_20; [L239] var_21_arg_0 = var_21_arg_0 & mask_SORT_19 [L240] SORT_13 var_21 = var_21_arg_0; [L241] SORT_13 var_22_arg_0 = var_14; [L242] SORT_13 var_22_arg_1 = var_21; [L243] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L244] SORT_13 var_16_arg_0 = var_14; [L245] SORT_13 var_16_arg_1 = var_15; [L246] SORT_1 var_16 = var_16_arg_0 == var_16_arg_1; [L247] SORT_1 var_17_arg_0 = var_16; [L248] SORT_3 var_17_arg_1 = state_10; [L249] SORT_3 var_17_arg_2 = input_9; [L250] EXPR var_17_arg_0 ? var_17_arg_1 : var_17_arg_2 [L250] SORT_3 var_17 = var_17_arg_0 ? var_17_arg_1 : var_17_arg_2; [L251] SORT_1 var_23_arg_0 = var_22; [L252] SORT_3 var_23_arg_1 = state_18; [L253] SORT_3 var_23_arg_2 = var_17; [L254] EXPR var_23_arg_0 ? var_23_arg_1 : var_23_arg_2 [L254] SORT_3 var_23 = var_23_arg_0 ? var_23_arg_1 : var_23_arg_2; [L255] SORT_1 var_28_arg_0 = var_27; [L256] SORT_3 var_28_arg_1 = state_24; [L257] SORT_3 var_28_arg_2 = var_23; [L258] EXPR var_28_arg_0 ? var_28_arg_1 : var_28_arg_2 [L258] SORT_3 var_28 = var_28_arg_0 ? var_28_arg_1 : var_28_arg_2; [L259] SORT_1 var_33_arg_0 = var_32; [L260] SORT_3 var_33_arg_1 = state_29; [L261] SORT_3 var_33_arg_2 = var_28; [L262] EXPR var_33_arg_0 ? var_33_arg_1 : var_33_arg_2 [L262] SORT_3 var_33 = var_33_arg_0 ? var_33_arg_1 : var_33_arg_2; [L263] SORT_1 var_38_arg_0 = var_37; [L264] SORT_3 var_38_arg_1 = state_34; [L265] SORT_3 var_38_arg_2 = var_33; [L266] EXPR var_38_arg_0 ? var_38_arg_1 : var_38_arg_2 [L266] SORT_3 var_38 = var_38_arg_0 ? var_38_arg_1 : var_38_arg_2; [L267] SORT_1 var_44_arg_0 = var_43; [L268] SORT_3 var_44_arg_1 = state_39; [L269] SORT_3 var_44_arg_2 = var_38; [L270] EXPR var_44_arg_0 ? var_44_arg_1 : var_44_arg_2 [L270] SORT_3 var_44 = var_44_arg_0 ? var_44_arg_1 : var_44_arg_2; [L271] SORT_1 var_49_arg_0 = var_48; [L272] SORT_3 var_49_arg_1 = state_45; [L273] SORT_3 var_49_arg_2 = var_44; [L274] EXPR var_49_arg_0 ? var_49_arg_1 : var_49_arg_2 [L274] SORT_3 var_49 = var_49_arg_0 ? var_49_arg_1 : var_49_arg_2; [L275] SORT_1 var_54_arg_0 = var_53; [L276] SORT_3 var_54_arg_1 = state_50; [L277] SORT_3 var_54_arg_2 = var_49; [L278] EXPR var_54_arg_0 ? var_54_arg_1 : var_54_arg_2 [L278] SORT_3 var_54 = var_54_arg_0 ? var_54_arg_1 : var_54_arg_2; [L279] SORT_1 var_58_arg_0 = var_57; [L280] SORT_3 var_58_arg_1 = state_55; [L281] SORT_3 var_58_arg_2 = var_54; [L282] EXPR var_58_arg_0 ? var_58_arg_1 : var_58_arg_2 [L282] SORT_3 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L283] var_58 = var_58 & mask_SORT_3 [L284] SORT_3 var_88_arg_0 = state_87; [L285] SORT_3 var_88_arg_1 = var_58; [L286] SORT_1 var_88 = var_88_arg_0 == var_88_arg_1; [L287] SORT_1 var_89_arg_0 = var_86; [L288] SORT_1 var_89_arg_1 = var_88; [L289] SORT_1 var_89 = var_89_arg_0 | var_89_arg_1; [L290] SORT_1 var_110_arg_0 = state_91; [L291] SORT_1 var_110_arg_1 = input_109; [L292] SORT_1 var_110_arg_2 = var_89; [L293] EXPR var_110_arg_0 ? var_110_arg_1 : var_110_arg_2 [L293] SORT_1 var_110 = var_110_arg_0 ? var_110_arg_1 : var_110_arg_2; [L294] SORT_1 var_113_arg_0 = var_110; [L295] SORT_1 var_113 = ~var_113_arg_0; [L296] SORT_1 var_114_arg_0 = var_112; [L297] SORT_1 var_114_arg_1 = var_113; [L298] SORT_1 var_114 = var_114_arg_0 & var_114_arg_1; [L299] var_114 = var_114 & mask_SORT_1 [L300] SORT_1 bad_115_arg_0 = var_114; [L301] CALL __VERIFIER_assert(!(bad_115_arg_0)) [L20] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L301] RET __VERIFIER_assert(!(bad_115_arg_0)) [L303] SORT_11 var_137_arg_0 = state_136; [L304] SORT_13 var_137 = var_137_arg_0 >> 0; [L305] var_137 = var_137 & mask_SORT_13 [L306] SORT_13 var_194_arg_0 = var_137; [L307] SORT_13 var_194_arg_1 = var_15; [L308] SORT_1 var_194 = var_194_arg_0 == var_194_arg_1; [L309] SORT_1 var_195_arg_0 = input_6; [L310] SORT_1 var_195_arg_1 = var_194; [L311] SORT_1 var_195 = var_195_arg_0 & var_195_arg_1; [L312] var_195 = var_195 & mask_SORT_1 [L313] SORT_1 var_267_arg_0 = var_195; [L314] SORT_3 var_267_arg_1 = input_4; [L315] SORT_3 var_267_arg_2 = state_10; [L316] EXPR var_267_arg_0 ? var_267_arg_1 : var_267_arg_2 [L316] SORT_3 var_267 = var_267_arg_0 ? var_267_arg_1 : var_267_arg_2; [L317] SORT_1 var_269_arg_0 = input_7; [L318] SORT_3 var_269_arg_1 = var_268; [L319] SORT_3 var_269_arg_2 = var_267; [L320] EXPR var_269_arg_0 ? var_269_arg_1 : var_269_arg_2 [L320] SORT_3 var_269 = var_269_arg_0 ? var_269_arg_1 : var_269_arg_2; [L321] SORT_3 next_270_arg_1 = var_269; [L322] SORT_1 var_119_arg_0 = input_6; [L323] SORT_1 var_119_arg_1 = input_5; [L324] SORT_1 var_119 = var_119_arg_0 | var_119_arg_1; [L325] SORT_1 var_120_arg_0 = var_119; [L326] SORT_1 var_120_arg_1 = input_7; [L327] SORT_1 var_120 = var_120_arg_0 | var_120_arg_1; [L328] var_120 = var_120 & mask_SORT_1 [L329] SORT_1 var_198_arg_0 = input_5; [L330] var_198_arg_0 = var_198_arg_0 & mask_SORT_1 [L331] SORT_11 var_198 = var_198_arg_0; [L332] SORT_11 var_199_arg_0 = state_12; [L333] SORT_11 var_199_arg_1 = var_198; [L334] SORT_11 var_199 = var_199_arg_0 + var_199_arg_1; [L335] SORT_1 var_271_arg_0 = var_120; [L336] SORT_11 var_271_arg_1 = var_199; [L337] SORT_11 var_271_arg_2 = state_12; [L338] EXPR var_271_arg_0 ? var_271_arg_1 : var_271_arg_2 [L338] SORT_11 var_271 = var_271_arg_0 ? var_271_arg_1 : var_271_arg_2; [L339] SORT_1 var_272_arg_0 = input_7; [L340] SORT_11 var_272_arg_1 = var_81; [L341] SORT_11 var_272_arg_2 = var_271; [L342] EXPR var_272_arg_0 ? var_272_arg_1 : var_272_arg_2 [L342] SORT_11 var_272 = var_272_arg_0 ? var_272_arg_1 : var_272_arg_2; [L343] SORT_11 next_273_arg_1 = var_272; [L344] SORT_19 var_187_arg_0 = var_20; [L345] var_187_arg_0 = var_187_arg_0 & mask_SORT_19 [L346] SORT_13 var_187 = var_187_arg_0; [L347] SORT_13 var_188_arg_0 = var_137; [L348] SORT_13 var_188_arg_1 = var_187; [L349] SORT_1 var_188 = var_188_arg_0 == var_188_arg_1; [L350] SORT_1 var_189_arg_0 = input_6; [L351] SORT_1 var_189_arg_1 = var_188; [L352] SORT_1 var_189 = var_189_arg_0 & var_189_arg_1; [L353] var_189 = var_189 & mask_SORT_1 [L354] SORT_1 var_274_arg_0 = var_189; [L355] SORT_3 var_274_arg_1 = input_4; [L356] SORT_3 var_274_arg_2 = state_18; [L357] EXPR var_274_arg_0 ? var_274_arg_1 : var_274_arg_2 [L357] SORT_3 var_274 = var_274_arg_0 ? var_274_arg_1 : var_274_arg_2; [L358] SORT_1 var_275_arg_0 = input_7; [L359] SORT_3 var_275_arg_1 = var_268; [L360] SORT_3 var_275_arg_2 = var_274; [L361] EXPR var_275_arg_0 ? var_275_arg_1 : var_275_arg_2 [L361] SORT_3 var_275 = var_275_arg_0 ? var_275_arg_1 : var_275_arg_2; [L362] SORT_3 next_276_arg_1 = var_275; [L363] SORT_19 var_180_arg_0 = var_25; [L364] var_180_arg_0 = var_180_arg_0 & mask_SORT_19 [L365] SORT_13 var_180 = var_180_arg_0; [L366] SORT_13 var_181_arg_0 = var_137; [L367] SORT_13 var_181_arg_1 = var_180; [L368] SORT_1 var_181 = var_181_arg_0 == var_181_arg_1; [L369] SORT_1 var_182_arg_0 = input_6; [L370] SORT_1 var_182_arg_1 = var_181; [L371] SORT_1 var_182 = var_182_arg_0 & var_182_arg_1; [L372] var_182 = var_182 & mask_SORT_1 [L373] SORT_1 var_277_arg_0 = var_182; [L374] SORT_3 var_277_arg_1 = input_4; [L375] SORT_3 var_277_arg_2 = state_24; [L376] EXPR var_277_arg_0 ? var_277_arg_1 : var_277_arg_2 [L376] SORT_3 var_277 = var_277_arg_0 ? var_277_arg_1 : var_277_arg_2; [L377] SORT_1 var_278_arg_0 = input_7; [L378] SORT_3 var_278_arg_1 = var_268; [L379] SORT_3 var_278_arg_2 = var_277; [L380] EXPR var_278_arg_0 ? var_278_arg_1 : var_278_arg_2 [L380] SORT_3 var_278 = var_278_arg_0 ? var_278_arg_1 : var_278_arg_2; [L381] SORT_3 next_279_arg_1 = var_278; [L382] SORT_19 var_173_arg_0 = var_30; [L383] var_173_arg_0 = var_173_arg_0 & mask_SORT_19 [L384] SORT_13 var_173 = var_173_arg_0; [L385] SORT_13 var_174_arg_0 = var_137; [L386] SORT_13 var_174_arg_1 = var_173; [L387] SORT_1 var_174 = var_174_arg_0 == var_174_arg_1; [L388] SORT_1 var_175_arg_0 = input_6; [L389] SORT_1 var_175_arg_1 = var_174; [L390] SORT_1 var_175 = var_175_arg_0 & var_175_arg_1; [L391] var_175 = var_175 & mask_SORT_1 [L392] SORT_1 var_280_arg_0 = var_175; [L393] SORT_3 var_280_arg_1 = input_4; [L394] SORT_3 var_280_arg_2 = state_29; [L395] EXPR var_280_arg_0 ? var_280_arg_1 : var_280_arg_2 [L395] SORT_3 var_280 = var_280_arg_0 ? var_280_arg_1 : var_280_arg_2; [L396] SORT_1 var_281_arg_0 = input_7; [L397] SORT_3 var_281_arg_1 = var_268; [L398] SORT_3 var_281_arg_2 = var_280; [L399] EXPR var_281_arg_0 ? var_281_arg_1 : var_281_arg_2 [L399] SORT_3 var_281 = var_281_arg_0 ? var_281_arg_1 : var_281_arg_2; [L400] SORT_3 next_282_arg_1 = var_281; [L401] SORT_19 var_166_arg_0 = var_35; [L402] var_166_arg_0 = var_166_arg_0 & mask_SORT_19 [L403] SORT_13 var_166 = var_166_arg_0; [L404] SORT_13 var_167_arg_0 = var_137; [L405] SORT_13 var_167_arg_1 = var_166; [L406] SORT_1 var_167 = var_167_arg_0 == var_167_arg_1; [L407] SORT_1 var_168_arg_0 = input_6; [L408] SORT_1 var_168_arg_1 = var_167; [L409] SORT_1 var_168 = var_168_arg_0 & var_168_arg_1; [L410] var_168 = var_168 & mask_SORT_1 [L411] SORT_1 var_283_arg_0 = var_168; [L412] SORT_3 var_283_arg_1 = input_4; [L413] SORT_3 var_283_arg_2 = state_34; [L414] EXPR var_283_arg_0 ? var_283_arg_1 : var_283_arg_2 [L414] SORT_3 var_283 = var_283_arg_0 ? var_283_arg_1 : var_283_arg_2; [L415] SORT_1 var_284_arg_0 = input_7; [L416] SORT_3 var_284_arg_1 = var_268; [L417] SORT_3 var_284_arg_2 = var_283; [L418] EXPR var_284_arg_0 ? var_284_arg_1 : var_284_arg_2 [L418] SORT_3 var_284 = var_284_arg_0 ? var_284_arg_1 : var_284_arg_2; [L419] SORT_3 next_285_arg_1 = var_284; [L420] SORT_40 var_159_arg_0 = var_41; [L421] var_159_arg_0 = var_159_arg_0 & mask_SORT_40 [L422] SORT_13 var_159 = var_159_arg_0; [L423] SORT_13 var_160_arg_0 = var_137; [L424] SORT_13 var_160_arg_1 = var_159; [L425] SORT_1 var_160 = var_160_arg_0 == var_160_arg_1; [L426] SORT_1 var_161_arg_0 = input_6; [L427] SORT_1 var_161_arg_1 = var_160; [L428] SORT_1 var_161 = var_161_arg_0 & var_161_arg_1; [L429] var_161 = var_161 & mask_SORT_1 [L430] SORT_1 var_286_arg_0 = var_161; [L431] SORT_3 var_286_arg_1 = input_4; [L432] SORT_3 var_286_arg_2 = state_39; [L433] EXPR var_286_arg_0 ? var_286_arg_1 : var_286_arg_2 [L433] SORT_3 var_286 = var_286_arg_0 ? var_286_arg_1 : var_286_arg_2; [L434] SORT_1 var_287_arg_0 = input_7; [L435] SORT_3 var_287_arg_1 = var_268; [L436] SORT_3 var_287_arg_2 = var_286; [L437] EXPR var_287_arg_0 ? var_287_arg_1 : var_287_arg_2 [L437] SORT_3 var_287 = var_287_arg_0 ? var_287_arg_1 : var_287_arg_2; [L438] SORT_3 next_288_arg_1 = var_287; [L439] SORT_40 var_152_arg_0 = var_46; [L440] var_152_arg_0 = var_152_arg_0 & mask_SORT_40 [L441] SORT_13 var_152 = var_152_arg_0; [L442] SORT_13 var_153_arg_0 = var_137; [L443] SORT_13 var_153_arg_1 = var_152; [L444] SORT_1 var_153 = var_153_arg_0 == var_153_arg_1; [L445] SORT_1 var_154_arg_0 = input_6; [L446] SORT_1 var_154_arg_1 = var_153; [L447] SORT_1 var_154 = var_154_arg_0 & var_154_arg_1; [L448] var_154 = var_154 & mask_SORT_1 [L449] SORT_1 var_289_arg_0 = var_154; [L450] SORT_3 var_289_arg_1 = input_4; [L451] SORT_3 var_289_arg_2 = state_45; [L452] EXPR var_289_arg_0 ? var_289_arg_1 : var_289_arg_2 [L452] SORT_3 var_289 = var_289_arg_0 ? var_289_arg_1 : var_289_arg_2; [L453] SORT_1 var_290_arg_0 = input_7; [L454] SORT_3 var_290_arg_1 = var_268; [L455] SORT_3 var_290_arg_2 = var_289; [L456] EXPR var_290_arg_0 ? var_290_arg_1 : var_290_arg_2 [L456] SORT_3 var_290 = var_290_arg_0 ? var_290_arg_1 : var_290_arg_2; [L457] SORT_3 next_291_arg_1 = var_290; [L458] SORT_1 var_145_arg_0 = var_51; [L459] var_145_arg_0 = var_145_arg_0 & mask_SORT_1 [L460] SORT_13 var_145 = var_145_arg_0; [L461] SORT_13 var_146_arg_0 = var_137; [L462] SORT_13 var_146_arg_1 = var_145; [L463] SORT_1 var_146 = var_146_arg_0 == var_146_arg_1; [L464] SORT_1 var_147_arg_0 = input_6; [L465] SORT_1 var_147_arg_1 = var_146; [L466] SORT_1 var_147 = var_147_arg_0 & var_147_arg_1; [L467] var_147 = var_147 & mask_SORT_1 [L468] SORT_1 var_292_arg_0 = var_147; [L469] SORT_3 var_292_arg_1 = input_4; [L470] SORT_3 var_292_arg_2 = state_50; [L471] EXPR var_292_arg_0 ? var_292_arg_1 : var_292_arg_2 [L471] SORT_3 var_292 = var_292_arg_0 ? var_292_arg_1 : var_292_arg_2; [L472] SORT_1 var_293_arg_0 = input_7; [L473] SORT_3 var_293_arg_1 = var_268; [L474] SORT_3 var_293_arg_2 = var_292; [L475] EXPR var_293_arg_0 ? var_293_arg_1 : var_293_arg_2 [L475] SORT_3 var_293 = var_293_arg_0 ? var_293_arg_1 : var_293_arg_2; [L476] SORT_3 next_294_arg_1 = var_293; [L477] SORT_13 var_138_arg_0 = var_137; [L478] SORT_1 var_138 = var_138_arg_0 != 0; [L479] SORT_1 var_139_arg_0 = var_138; [L480] SORT_1 var_139 = ~var_139_arg_0; [L481] SORT_1 var_140_arg_0 = input_6; [L482] SORT_1 var_140_arg_1 = var_139; [L483] SORT_1 var_140 = var_140_arg_0 & var_140_arg_1; [L484] var_140 = var_140 & mask_SORT_1 [L485] SORT_1 var_295_arg_0 = var_140; [L486] SORT_3 var_295_arg_1 = input_4; [L487] SORT_3 var_295_arg_2 = state_55; [L488] EXPR var_295_arg_0 ? var_295_arg_1 : var_295_arg_2 [L488] SORT_3 var_295 = var_295_arg_0 ? var_295_arg_1 : var_295_arg_2; [L489] SORT_1 var_296_arg_0 = input_7; [L490] SORT_3 var_296_arg_1 = var_268; [L491] SORT_3 var_296_arg_2 = var_295; [L492] EXPR var_296_arg_0 ? var_296_arg_1 : var_296_arg_2 [L492] SORT_3 var_296 = var_296_arg_0 ? var_296_arg_1 : var_296_arg_2; [L493] SORT_3 next_297_arg_1 = var_296; [L494] SORT_1 var_298_arg_0 = input_6; [L495] var_298_arg_0 = var_298_arg_0 & mask_SORT_1 [L496] SORT_11 var_298 = var_298_arg_0; [L497] SORT_11 var_299_arg_0 = state_60; [L498] SORT_11 var_299_arg_1 = var_298; [L499] SORT_11 var_299 = var_299_arg_0 + var_299_arg_1; [L500] SORT_1 var_300_arg_0 = input_5; [L501] var_300_arg_0 = var_300_arg_0 & mask_SORT_1 [L502] SORT_11 var_300 = var_300_arg_0; [L503] SORT_11 var_301_arg_0 = var_299; [L504] SORT_11 var_301_arg_1 = var_300; [L505] SORT_11 var_301 = var_301_arg_0 - var_301_arg_1; [L506] SORT_1 var_302_arg_0 = input_7; [L507] SORT_11 var_302_arg_1 = var_81; [L508] SORT_11 var_302_arg_2 = var_301; [L509] EXPR var_302_arg_0 ? var_302_arg_1 : var_302_arg_2 [L509] SORT_11 var_302 = var_302_arg_0 ? var_302_arg_1 : var_302_arg_2; [L510] var_302 = var_302 & mask_SORT_11 [L511] SORT_11 next_303_arg_1 = var_302; [L512] SORT_1 var_228_arg_0 = state_68; [L513] SORT_1 var_228 = ~var_228_arg_0; [L514] var_228 = var_228 & mask_SORT_1 [L515] SORT_1 var_224_arg_0 = input_8; [L516] SORT_1 var_224_arg_1 = input_6; [L517] SORT_1 var_224 = var_224_arg_0 & var_224_arg_1; [L518] SORT_1 var_225_arg_0 = state_68; [L519] SORT_1 var_225_arg_1 = var_224; [L520] SORT_1 var_225 = var_225_arg_0 | var_225_arg_1; [L521] SORT_1 var_304_arg_0 = var_228; [L522] SORT_1 var_304_arg_1 = var_225; [L523] SORT_1 var_304_arg_2 = state_68; [L524] EXPR var_304_arg_0 ? var_304_arg_1 : var_304_arg_2 [L524] SORT_1 var_304 = var_304_arg_0 ? var_304_arg_1 : var_304_arg_2; [L525] SORT_1 var_305_arg_0 = input_7; [L526] SORT_1 var_305_arg_1 = var_111; [L527] SORT_1 var_305_arg_2 = var_304; [L528] EXPR var_305_arg_0 ? var_305_arg_1 : var_305_arg_2 [L528] SORT_1 var_305 = var_305_arg_0 ? var_305_arg_1 : var_305_arg_2; [L529] SORT_1 next_306_arg_1 = var_305; [L530] SORT_1 var_236_arg_0 = var_85; [L531] SORT_1 var_236_arg_1 = state_69; [L532] SORT_1 var_236 = var_236_arg_0 | var_236_arg_1; [L533] SORT_1 var_307_arg_0 = var_51; [L534] SORT_1 var_307_arg_1 = var_236; [L535] SORT_1 var_307_arg_2 = state_69; [L536] EXPR var_307_arg_0 ? var_307_arg_1 : var_307_arg_2 [L536] SORT_1 var_307 = var_307_arg_0 ? var_307_arg_1 : var_307_arg_2; [L537] SORT_1 var_308_arg_0 = input_7; [L538] SORT_1 var_308_arg_1 = var_111; [L539] SORT_1 var_308_arg_2 = var_307; [L540] EXPR var_308_arg_0 ? var_308_arg_1 : var_308_arg_2 [L540] SORT_1 var_308 = var_308_arg_0 ? var_308_arg_1 : var_308_arg_2; [L541] SORT_1 next_309_arg_1 = var_308; [L542] SORT_1 var_248_arg_0 = input_6; [L543] SORT_1 var_248_arg_1 = input_5; [L544] SORT_1 var_248 = var_248_arg_0 | var_248_arg_1; [L545] SORT_1 var_249_arg_0 = var_248; [L546] SORT_1 var_249_arg_1 = input_7; [L547] SORT_1 var_249 = var_249_arg_0 | var_249_arg_1; [L548] SORT_1 var_250_arg_0 = var_249; [L549] SORT_1 var_250_arg_1 = state_68; [L550] SORT_1 var_250 = var_250_arg_0 | var_250_arg_1; [L551] var_250 = var_250 & mask_SORT_1 [L552] SORT_1 var_310_arg_0 = var_250; [L553] SORT_11 var_310_arg_1 = var_82; [L554] SORT_11 var_310_arg_2 = state_72; [L555] EXPR var_310_arg_0 ? var_310_arg_1 : var_310_arg_2 [L555] SORT_11 var_310 = var_310_arg_0 ? var_310_arg_1 : var_310_arg_2; [L556] SORT_1 var_311_arg_0 = input_7; [L557] SORT_11 var_311_arg_1 = var_81; [L558] SORT_11 var_311_arg_2 = var_310; [L559] EXPR var_311_arg_0 ? var_311_arg_1 : var_311_arg_2 [L559] SORT_11 var_311 = var_311_arg_0 ? var_311_arg_1 : var_311_arg_2; [L560] var_311 = var_311 & mask_SORT_11 [L561] SORT_11 next_312_arg_1 = var_311; [L562] SORT_1 var_233_arg_0 = var_224; [L563] SORT_1 var_233_arg_1 = var_228; [L564] SORT_1 var_233 = var_233_arg_0 & var_233_arg_1; [L565] var_233 = var_233 & mask_SORT_1 [L566] SORT_1 var_313_arg_0 = var_233; [L567] SORT_3 var_313_arg_1 = input_4; [L568] SORT_3 var_313_arg_2 = state_87; [L569] EXPR var_313_arg_0 ? var_313_arg_1 : var_313_arg_2 [L569] SORT_3 var_313 = var_313_arg_0 ? var_313_arg_1 : var_313_arg_2; [L570] SORT_1 var_314_arg_0 = input_7; [L571] SORT_3 var_314_arg_1 = var_268; [L572] SORT_3 var_314_arg_2 = var_313; [L573] EXPR var_314_arg_0 ? var_314_arg_1 : var_314_arg_2 [L573] SORT_3 var_314 = var_314_arg_0 ? var_314_arg_1 : var_314_arg_2; [L574] var_314 = var_314 & mask_SORT_3 [L575] SORT_3 next_315_arg_1 = var_314; [L576] SORT_1 next_316_arg_1 = var_111; [L577] SORT_1 var_204_arg_0 = input_6; [L578] var_204_arg_0 = var_204_arg_0 & mask_SORT_1 [L579] SORT_11 var_204 = var_204_arg_0; [L580] SORT_11 var_205_arg_0 = state_136; [L581] SORT_11 var_205_arg_1 = var_204; [L582] SORT_11 var_205 = var_205_arg_0 + var_205_arg_1; [L583] SORT_1 var_317_arg_0 = var_120; [L584] SORT_11 var_317_arg_1 = var_205; [L585] SORT_11 var_317_arg_2 = state_136; [L586] EXPR var_317_arg_0 ? var_317_arg_1 : var_317_arg_2 [L586] SORT_11 var_317 = var_317_arg_0 ? var_317_arg_1 : var_317_arg_2; [L587] SORT_1 var_318_arg_0 = input_7; [L588] SORT_11 var_318_arg_1 = var_81; [L589] SORT_11 var_318_arg_2 = var_317; [L590] EXPR var_318_arg_0 ? var_318_arg_1 : var_318_arg_2 [L590] SORT_11 var_318 = var_318_arg_0 ? var_318_arg_1 : var_318_arg_2; [L591] SORT_11 next_319_arg_1 = var_318; [L593] state_10 = next_270_arg_1 [L594] state_12 = next_273_arg_1 [L595] state_18 = next_276_arg_1 [L596] state_24 = next_279_arg_1 [L597] state_29 = next_282_arg_1 [L598] state_34 = next_285_arg_1 [L599] state_39 = next_288_arg_1 [L600] state_45 = next_291_arg_1 [L601] state_50 = next_294_arg_1 [L602] state_55 = next_297_arg_1 [L603] state_60 = next_303_arg_1 [L604] state_68 = next_306_arg_1 [L605] state_69 = next_309_arg_1 [L606] state_72 = next_312_arg_1 [L607] state_87 = next_315_arg_1 [L608] state_91 = next_316_arg_1 [L609] state_136 = next_319_arg_1 VAL [bad_115_arg_0=0, constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=1, input_4=0, input_5=252, input_6=254, input_7=0, input_8=3, input_9=255, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=255, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=128, msb_SORT_40=2, next_270_arg_1=0, next_273_arg_1=0, next_276_arg_1=0, next_279_arg_1=16, next_282_arg_1=0, next_285_arg_1=0, next_288_arg_1=0, next_291_arg_1=0, next_294_arg_1=0, next_297_arg_1=0, next_303_arg_1=0, next_306_arg_1=0, next_309_arg_1=0, next_312_arg_1=0, next_315_arg_1=0, next_316_arg_1=0, next_319_arg_1=250, state_10=0, state_12=0, state_136=250, state_18=0, state_24=16, state_29=0, state_34=0, state_39=0, state_45=0, state_50=0, state_55=0, state_60=0, state_68=0, state_69=0, state_72=0, state_87=0, state_91=0, var_100=1, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=1, var_103=249, var_103_arg_0=2, var_104=0, var_104_arg_0=252, var_105=0, var_105_arg_0=249, var_105_arg_1=0, var_106=1, var_106_arg_0=1, var_107=1, var_107_arg_0=0, var_107_arg_1=1, var_110=1, var_110_arg_0=1, var_110_arg_1=1, var_110_arg_2=1, var_111=0, var_112=0, var_112_arg_0=1, var_112_arg_1=0, var_112_arg_2=1, var_113=2, var_113_arg_0=1, var_114=0, var_114_arg_0=0, var_114_arg_1=2, var_119=1, var_119_arg_0=254, var_119_arg_1=252, var_120=1, var_120_arg_0=1, var_120_arg_1=0, var_137=11, var_137_arg_0=250, var_138=1, var_138_arg_0=11, var_139=254, var_139_arg_0=1, var_14=0, var_140=0, var_140_arg_0=254, var_140_arg_1=254, var_145=1, var_145_arg_0=1, var_146=0, var_146_arg_0=11, var_146_arg_1=1, var_147=0, var_147_arg_0=254, var_147_arg_1=0, var_14_arg_0=0, var_15=8, var_152=11, var_152_arg_0=11, var_153=1, var_153_arg_0=11, var_153_arg_1=11, var_154=0, var_154_arg_0=254, var_154_arg_1=1, var_159=1, var_159_arg_0=1, var_16=0, var_160=0, var_160_arg_0=11, var_160_arg_1=1, var_161=0, var_161_arg_0=254, var_161_arg_1=0, var_166=14, var_166_arg_0=14, var_167=0, var_167_arg_0=11, var_167_arg_1=14, var_168=0, var_168_arg_0=254, var_168_arg_1=0, var_16_arg_0=0, var_16_arg_1=8, var_17=255, var_173=0, var_173_arg_0=0, var_174=0, var_174_arg_0=11, var_174_arg_1=0, var_175=0, var_175_arg_0=254, var_175_arg_1=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=255, var_180=11, var_180_arg_0=11, var_181=1, var_181_arg_0=11, var_181_arg_1=11, var_182=0, var_182_arg_0=254, var_182_arg_1=1, var_187=11, var_187_arg_0=11, var_188=1, var_188_arg_0=11, var_188_arg_1=11, var_189=0, var_189_arg_0=254, var_189_arg_1=1, var_194=0, var_194_arg_0=11, var_194_arg_1=8, var_195=0, var_195_arg_0=254, var_195_arg_1=0, var_198=0, var_198_arg_0=0, var_199=0, var_199_arg_0=0, var_199_arg_1=0, var_20=7, var_204=0, var_204_arg_0=0, var_205=250, var_205_arg_0=250, var_205_arg_1=0, var_21=0, var_21_arg_0=0, var_22=1, var_224=27, var_224_arg_0=3, var_224_arg_1=254, var_225=0, var_225_arg_0=0, var_225_arg_1=27, var_228=1, var_228_arg_0=0, var_22_arg_0=0, var_22_arg_1=0, var_23=0, var_233=1, var_233_arg_0=27, var_233_arg_1=1, var_236=0, var_236_arg_0=0, var_236_arg_1=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=255, var_248=254, var_248_arg_0=254, var_248_arg_1=252, var_249=248, var_249_arg_0=254, var_249_arg_1=0, var_25=6, var_250=0, var_250_arg_0=248, var_250_arg_1=0, var_26=6, var_267=0, var_267_arg_0=0, var_267_arg_1=0, var_267_arg_2=0, var_268=0, var_269=0, var_269_arg_0=0, var_269_arg_1=0, var_269_arg_2=0, var_26_arg_0=6, var_27=0, var_271=0, var_271_arg_0=1, var_271_arg_1=0, var_271_arg_2=0, var_272=0, var_272_arg_0=0, var_272_arg_1=0, var_272_arg_2=0, var_274=0, var_274_arg_0=0, var_274_arg_1=0, var_274_arg_2=0, var_275=0, var_275_arg_0=0, var_275_arg_1=0, var_275_arg_2=0, var_277=16, var_277_arg_0=0, var_277_arg_1=0, var_277_arg_2=16, var_278=16, var_278_arg_0=0, var_278_arg_1=0, var_278_arg_2=16, var_27_arg_0=0, var_27_arg_1=6, var_28=0, var_280=0, var_280_arg_0=0, var_280_arg_1=0, var_280_arg_2=0, var_281=0, var_281_arg_0=0, var_281_arg_1=0, var_281_arg_2=0, var_283=0, var_283_arg_0=0, var_283_arg_1=0, var_283_arg_2=0, var_284=0, var_284_arg_0=0, var_284_arg_1=0, var_284_arg_2=0, var_286=0, var_286_arg_0=0, var_286_arg_1=0, var_286_arg_2=0, var_287=0, var_287_arg_0=0, var_287_arg_1=0, var_287_arg_2=0, var_289=0, var_289_arg_0=0, var_289_arg_1=0, var_289_arg_2=0, var_28_arg_0=0, var_28_arg_1=16, var_28_arg_2=0, var_290=0, var_290_arg_0=0, var_290_arg_1=0, var_290_arg_2=0, var_292=0, var_292_arg_0=0, var_292_arg_1=0, var_292_arg_2=0, var_293=0, var_293_arg_0=0, var_293_arg_1=0, var_293_arg_2=0, var_295=0, var_295_arg_0=0, var_295_arg_1=0, var_295_arg_2=0, var_296=0, var_296_arg_0=0, var_296_arg_1=0, var_296_arg_2=0, var_298=0, var_298_arg_0=0, var_299=0, var_299_arg_0=0, var_299_arg_1=0, var_30=5, var_300=0, var_300_arg_0=0, var_301=0, var_301_arg_0=0, var_301_arg_1=0, var_302=0, var_302_arg_0=0, var_302_arg_1=0, var_302_arg_2=0, var_304=0, var_304_arg_0=1, var_304_arg_1=0, var_304_arg_2=0, var_305=0, var_305_arg_0=0, var_305_arg_1=0, var_305_arg_2=0, var_307=0, var_307_arg_0=1, var_307_arg_1=0, var_307_arg_2=0, var_308=0, var_308_arg_0=0, var_308_arg_1=0, var_308_arg_2=0, var_31=255, var_310=0, var_310_arg_0=0, var_310_arg_1=0, var_310_arg_2=0, var_311=0, var_311_arg_0=0, var_311_arg_1=0, var_311_arg_2=0, var_313=0, var_313_arg_0=1, var_313_arg_1=0, var_313_arg_2=0, var_314=0, var_314_arg_0=0, var_314_arg_1=0, var_314_arg_2=0, var_317=250, var_317_arg_0=1, var_317_arg_1=250, var_317_arg_2=250, var_318=250, var_318_arg_0=0, var_318_arg_1=0, var_318_arg_2=250, var_31_arg_0=255, var_32=0, var_32_arg_0=0, var_32_arg_1=255, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_35=4, var_36=255, var_36_arg_0=255, var_37=0, var_37_arg_0=0, var_37_arg_1=255, var_38=0, var_38_arg_0=0, var_38_arg_1=0, var_38_arg_2=0, var_41=3, var_42=0, var_42_arg_0=0, var_43=1, var_43_arg_0=0, var_43_arg_1=0, var_44=0, var_44_arg_0=1, var_44_arg_1=0, var_44_arg_2=0, var_46=2, var_47=24, var_47_arg_0=24, var_48=0, var_48_arg_0=0, var_48_arg_1=24, var_49=0, var_49_arg_0=0, var_49_arg_1=0, var_49_arg_2=0, var_51=1, var_52=1, var_52_arg_0=1, var_53=0, var_53_arg_0=0, var_53_arg_1=1, var_54=0, var_54_arg_0=0, var_54_arg_1=0, var_54_arg_2=0, var_56=0, var_56_arg_0=0, var_57=0, var_57_arg_0=0, var_58=0, var_58_arg_0=0, var_58_arg_1=0, var_58_arg_2=0, var_61=0, var_61_arg_0=0, var_62=2, var_62_arg_0=0, var_64=9, var_65=9, var_65_arg_0=9, var_66=0, var_66_arg_0=0, var_66_arg_1=9, var_70=10, var_70_arg_0=0, var_71=0, var_71_arg_0=0, var_71_arg_1=10, var_73=0, var_73_arg_0=0, var_74=0, var_74_arg_0=0, var_74_arg_1=0, var_75=0, var_75_arg_0=0, var_76=0, var_76_arg_0=254, var_76_arg_1=0, var_77=0, var_77_arg_0=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79=0, var_79_arg_0=0, var_80=0, var_80_arg_0=0, var_80_arg_1=0, var_81=0, var_82=0, var_82_arg_0=0, var_82_arg_1=0, var_82_arg_2=0, var_83=0, var_83_arg_0=0, var_84=0, var_84_arg_0=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=1, var_86_arg_0=0, var_88=1, var_88_arg_0=0, var_88_arg_1=0, var_89=1, var_89_arg_0=1, var_89_arg_1=1, var_93=0, var_93_arg_0=0, var_93_arg_1=1, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=255, var_97=1, var_97_arg_0=0, var_98=1, var_98_arg_0=254, var_99=1, var_99_arg_0=1, var_99_arg_1=1] [L87] input_2 = __VERIFIER_nondet_uchar() [L88] input_4 = __VERIFIER_nondet_uchar() [L89] input_5 = __VERIFIER_nondet_uchar() [L90] input_6 = __VERIFIER_nondet_uchar() [L91] input_7 = __VERIFIER_nondet_uchar() [L92] input_7 = input_7 & mask_SORT_1 [L93] input_8 = __VERIFIER_nondet_uchar() [L94] input_9 = __VERIFIER_nondet_uchar() [L95] input_109 = __VERIFIER_nondet_uchar() [L97] SORT_1 var_93_arg_0 = input_7; [L98] SORT_1 var_93_arg_1 = state_91; [L99] SORT_1 var_93 = var_93_arg_0 == var_93_arg_1; [L100] SORT_1 var_94_arg_0 = var_51; [L101] SORT_1 var_94 = ~var_94_arg_0; [L102] SORT_1 var_95_arg_0 = var_93; [L103] SORT_1 var_95_arg_1 = var_94; [L104] SORT_1 var_95 = var_95_arg_0 | var_95_arg_1; [L105] var_95 = var_95 & mask_SORT_1 [L106] SORT_1 constr_96_arg_0 = var_95; VAL [bad_115_arg_0=0, constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=3, input_4=6, input_5=1, input_6=3, input_7=0, input_8=4, input_9=13, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=255, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=128, msb_SORT_40=2, next_270_arg_1=0, next_273_arg_1=0, next_276_arg_1=0, next_279_arg_1=16, next_282_arg_1=0, next_285_arg_1=0, next_288_arg_1=0, next_291_arg_1=0, next_294_arg_1=0, next_297_arg_1=0, next_303_arg_1=0, next_306_arg_1=0, next_309_arg_1=0, next_312_arg_1=0, next_315_arg_1=0, next_316_arg_1=0, next_319_arg_1=250, state_10=0, state_12=0, state_136=250, state_18=0, state_24=16, state_29=0, state_34=0, state_39=0, state_45=0, state_50=0, state_55=0, state_60=0, state_68=0, state_69=0, state_72=0, state_87=0, state_91=0, var_100=1, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=1, var_103=249, var_103_arg_0=2, var_104=0, var_104_arg_0=252, var_105=0, var_105_arg_0=249, var_105_arg_1=0, var_106=1, var_106_arg_0=1, var_107=1, var_107_arg_0=0, var_107_arg_1=1, var_110=1, var_110_arg_0=1, var_110_arg_1=1, var_110_arg_2=1, var_111=0, var_112=0, var_112_arg_0=1, var_112_arg_1=0, var_112_arg_2=1, var_113=2, var_113_arg_0=1, var_114=0, var_114_arg_0=0, var_114_arg_1=2, var_119=1, var_119_arg_0=254, var_119_arg_1=252, var_120=1, var_120_arg_0=1, var_120_arg_1=0, var_137=11, var_137_arg_0=250, var_138=1, var_138_arg_0=11, var_139=254, var_139_arg_0=1, var_14=0, var_140=0, var_140_arg_0=254, var_140_arg_1=254, var_145=1, var_145_arg_0=1, var_146=0, var_146_arg_0=11, var_146_arg_1=1, var_147=0, var_147_arg_0=254, var_147_arg_1=0, var_14_arg_0=0, var_15=8, var_152=11, var_152_arg_0=11, var_153=1, var_153_arg_0=11, var_153_arg_1=11, var_154=0, var_154_arg_0=254, var_154_arg_1=1, var_159=1, var_159_arg_0=1, var_16=0, var_160=0, var_160_arg_0=11, var_160_arg_1=1, var_161=0, var_161_arg_0=254, var_161_arg_1=0, var_166=14, var_166_arg_0=14, var_167=0, var_167_arg_0=11, var_167_arg_1=14, var_168=0, var_168_arg_0=254, var_168_arg_1=0, var_16_arg_0=0, var_16_arg_1=8, var_17=255, var_173=0, var_173_arg_0=0, var_174=0, var_174_arg_0=11, var_174_arg_1=0, var_175=0, var_175_arg_0=254, var_175_arg_1=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=255, var_180=11, var_180_arg_0=11, var_181=1, var_181_arg_0=11, var_181_arg_1=11, var_182=0, var_182_arg_0=254, var_182_arg_1=1, var_187=11, var_187_arg_0=11, var_188=1, var_188_arg_0=11, var_188_arg_1=11, var_189=0, var_189_arg_0=254, var_189_arg_1=1, var_194=0, var_194_arg_0=11, var_194_arg_1=8, var_195=0, var_195_arg_0=254, var_195_arg_1=0, var_198=0, var_198_arg_0=0, var_199=0, var_199_arg_0=0, var_199_arg_1=0, var_20=7, var_204=0, var_204_arg_0=0, var_205=250, var_205_arg_0=250, var_205_arg_1=0, var_21=0, var_21_arg_0=0, var_22=1, var_224=27, var_224_arg_0=3, var_224_arg_1=254, var_225=0, var_225_arg_0=0, var_225_arg_1=27, var_228=1, var_228_arg_0=0, var_22_arg_0=0, var_22_arg_1=0, var_23=0, var_233=1, var_233_arg_0=27, var_233_arg_1=1, var_236=0, var_236_arg_0=0, var_236_arg_1=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=255, var_248=254, var_248_arg_0=254, var_248_arg_1=252, var_249=248, var_249_arg_0=254, var_249_arg_1=0, var_25=6, var_250=0, var_250_arg_0=248, var_250_arg_1=0, var_26=6, var_267=0, var_267_arg_0=0, var_267_arg_1=0, var_267_arg_2=0, var_268=0, var_269=0, var_269_arg_0=0, var_269_arg_1=0, var_269_arg_2=0, var_26_arg_0=6, var_27=0, var_271=0, var_271_arg_0=1, var_271_arg_1=0, var_271_arg_2=0, var_272=0, var_272_arg_0=0, var_272_arg_1=0, var_272_arg_2=0, var_274=0, var_274_arg_0=0, var_274_arg_1=0, var_274_arg_2=0, var_275=0, var_275_arg_0=0, var_275_arg_1=0, var_275_arg_2=0, var_277=16, var_277_arg_0=0, var_277_arg_1=0, var_277_arg_2=16, var_278=16, var_278_arg_0=0, var_278_arg_1=0, var_278_arg_2=16, var_27_arg_0=0, var_27_arg_1=6, var_28=0, var_280=0, var_280_arg_0=0, var_280_arg_1=0, var_280_arg_2=0, var_281=0, var_281_arg_0=0, var_281_arg_1=0, var_281_arg_2=0, var_283=0, var_283_arg_0=0, var_283_arg_1=0, var_283_arg_2=0, var_284=0, var_284_arg_0=0, var_284_arg_1=0, var_284_arg_2=0, var_286=0, var_286_arg_0=0, var_286_arg_1=0, var_286_arg_2=0, var_287=0, var_287_arg_0=0, var_287_arg_1=0, var_287_arg_2=0, var_289=0, var_289_arg_0=0, var_289_arg_1=0, var_289_arg_2=0, var_28_arg_0=0, var_28_arg_1=16, var_28_arg_2=0, var_290=0, var_290_arg_0=0, var_290_arg_1=0, var_290_arg_2=0, var_292=0, var_292_arg_0=0, var_292_arg_1=0, var_292_arg_2=0, var_293=0, var_293_arg_0=0, var_293_arg_1=0, var_293_arg_2=0, var_295=0, var_295_arg_0=0, var_295_arg_1=0, var_295_arg_2=0, var_296=0, var_296_arg_0=0, var_296_arg_1=0, var_296_arg_2=0, var_298=0, var_298_arg_0=0, var_299=0, var_299_arg_0=0, var_299_arg_1=0, var_30=5, var_300=0, var_300_arg_0=0, var_301=0, var_301_arg_0=0, var_301_arg_1=0, var_302=0, var_302_arg_0=0, var_302_arg_1=0, var_302_arg_2=0, var_304=0, var_304_arg_0=1, var_304_arg_1=0, var_304_arg_2=0, var_305=0, var_305_arg_0=0, var_305_arg_1=0, var_305_arg_2=0, var_307=0, var_307_arg_0=1, var_307_arg_1=0, var_307_arg_2=0, var_308=0, var_308_arg_0=0, var_308_arg_1=0, var_308_arg_2=0, var_31=255, var_310=0, var_310_arg_0=0, var_310_arg_1=0, var_310_arg_2=0, var_311=0, var_311_arg_0=0, var_311_arg_1=0, var_311_arg_2=0, var_313=0, var_313_arg_0=1, var_313_arg_1=0, var_313_arg_2=0, var_314=0, var_314_arg_0=0, var_314_arg_1=0, var_314_arg_2=0, var_317=250, var_317_arg_0=1, var_317_arg_1=250, var_317_arg_2=250, var_318=250, var_318_arg_0=0, var_318_arg_1=0, var_318_arg_2=250, var_31_arg_0=255, var_32=0, var_32_arg_0=0, var_32_arg_1=255, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_35=4, var_36=255, var_36_arg_0=255, var_37=0, var_37_arg_0=0, var_37_arg_1=255, var_38=0, var_38_arg_0=0, var_38_arg_1=0, var_38_arg_2=0, var_41=3, var_42=0, var_42_arg_0=0, var_43=1, var_43_arg_0=0, var_43_arg_1=0, var_44=0, var_44_arg_0=1, var_44_arg_1=0, var_44_arg_2=0, var_46=2, var_47=24, var_47_arg_0=24, var_48=0, var_48_arg_0=0, var_48_arg_1=24, var_49=0, var_49_arg_0=0, var_49_arg_1=0, var_49_arg_2=0, var_51=1, var_52=1, var_52_arg_0=1, var_53=0, var_53_arg_0=0, var_53_arg_1=1, var_54=0, var_54_arg_0=0, var_54_arg_1=0, var_54_arg_2=0, var_56=0, var_56_arg_0=0, var_57=0, var_57_arg_0=0, var_58=0, var_58_arg_0=0, var_58_arg_1=0, var_58_arg_2=0, var_61=0, var_61_arg_0=0, var_62=2, var_62_arg_0=0, var_64=9, var_65=9, var_65_arg_0=9, var_66=0, var_66_arg_0=0, var_66_arg_1=9, var_70=10, var_70_arg_0=0, var_71=0, var_71_arg_0=0, var_71_arg_1=10, var_73=0, var_73_arg_0=0, var_74=0, var_74_arg_0=0, var_74_arg_1=0, var_75=0, var_75_arg_0=0, var_76=0, var_76_arg_0=254, var_76_arg_1=0, var_77=0, var_77_arg_0=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79=0, var_79_arg_0=0, var_80=0, var_80_arg_0=0, var_80_arg_1=0, var_81=0, var_82=0, var_82_arg_0=0, var_82_arg_1=0, var_82_arg_2=0, var_83=0, var_83_arg_0=0, var_84=0, var_84_arg_0=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=1, var_86_arg_0=0, var_88=1, var_88_arg_0=0, var_88_arg_1=0, var_89=1, var_89_arg_0=1, var_89_arg_1=1, var_93=1, var_93_arg_0=0, var_93_arg_1=0, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=1, var_95_arg_1=255, var_97=1, var_97_arg_0=0, var_98=1, var_98_arg_0=254, var_99=1, var_99_arg_0=1, var_99_arg_1=1] [L107] CALL assume_abort_if_not(constr_96_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) [L107] RET assume_abort_if_not(constr_96_arg_0) VAL [bad_115_arg_0=0, constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=3, input_4=6, input_5=1, input_6=3, input_7=0, input_8=4, input_9=13, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=255, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=128, msb_SORT_40=2, next_270_arg_1=0, next_273_arg_1=0, next_276_arg_1=0, next_279_arg_1=16, next_282_arg_1=0, next_285_arg_1=0, next_288_arg_1=0, next_291_arg_1=0, next_294_arg_1=0, next_297_arg_1=0, next_303_arg_1=0, next_306_arg_1=0, next_309_arg_1=0, next_312_arg_1=0, next_315_arg_1=0, next_316_arg_1=0, next_319_arg_1=250, state_10=0, state_12=0, state_136=250, state_18=0, state_24=16, state_29=0, state_34=0, state_39=0, state_45=0, state_50=0, state_55=0, state_60=0, state_68=0, state_69=0, state_72=0, state_87=0, state_91=0, var_100=1, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=1, var_103=249, var_103_arg_0=2, var_104=0, var_104_arg_0=252, var_105=0, var_105_arg_0=249, var_105_arg_1=0, var_106=1, var_106_arg_0=1, var_107=1, var_107_arg_0=0, var_107_arg_1=1, var_110=1, var_110_arg_0=1, var_110_arg_1=1, var_110_arg_2=1, var_111=0, var_112=0, var_112_arg_0=1, var_112_arg_1=0, var_112_arg_2=1, var_113=2, var_113_arg_0=1, var_114=0, var_114_arg_0=0, var_114_arg_1=2, var_119=1, var_119_arg_0=254, var_119_arg_1=252, var_120=1, var_120_arg_0=1, var_120_arg_1=0, var_137=11, var_137_arg_0=250, var_138=1, var_138_arg_0=11, var_139=254, var_139_arg_0=1, var_14=0, var_140=0, var_140_arg_0=254, var_140_arg_1=254, var_145=1, var_145_arg_0=1, var_146=0, var_146_arg_0=11, var_146_arg_1=1, var_147=0, var_147_arg_0=254, var_147_arg_1=0, var_14_arg_0=0, var_15=8, var_152=11, var_152_arg_0=11, var_153=1, var_153_arg_0=11, var_153_arg_1=11, var_154=0, var_154_arg_0=254, var_154_arg_1=1, var_159=1, var_159_arg_0=1, var_16=0, var_160=0, var_160_arg_0=11, var_160_arg_1=1, var_161=0, var_161_arg_0=254, var_161_arg_1=0, var_166=14, var_166_arg_0=14, var_167=0, var_167_arg_0=11, var_167_arg_1=14, var_168=0, var_168_arg_0=254, var_168_arg_1=0, var_16_arg_0=0, var_16_arg_1=8, var_17=255, var_173=0, var_173_arg_0=0, var_174=0, var_174_arg_0=11, var_174_arg_1=0, var_175=0, var_175_arg_0=254, var_175_arg_1=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=255, var_180=11, var_180_arg_0=11, var_181=1, var_181_arg_0=11, var_181_arg_1=11, var_182=0, var_182_arg_0=254, var_182_arg_1=1, var_187=11, var_187_arg_0=11, var_188=1, var_188_arg_0=11, var_188_arg_1=11, var_189=0, var_189_arg_0=254, var_189_arg_1=1, var_194=0, var_194_arg_0=11, var_194_arg_1=8, var_195=0, var_195_arg_0=254, var_195_arg_1=0, var_198=0, var_198_arg_0=0, var_199=0, var_199_arg_0=0, var_199_arg_1=0, var_20=7, var_204=0, var_204_arg_0=0, var_205=250, var_205_arg_0=250, var_205_arg_1=0, var_21=0, var_21_arg_0=0, var_22=1, var_224=27, var_224_arg_0=3, var_224_arg_1=254, var_225=0, var_225_arg_0=0, var_225_arg_1=27, var_228=1, var_228_arg_0=0, var_22_arg_0=0, var_22_arg_1=0, var_23=0, var_233=1, var_233_arg_0=27, var_233_arg_1=1, var_236=0, var_236_arg_0=0, var_236_arg_1=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=255, var_248=254, var_248_arg_0=254, var_248_arg_1=252, var_249=248, var_249_arg_0=254, var_249_arg_1=0, var_25=6, var_250=0, var_250_arg_0=248, var_250_arg_1=0, var_26=6, var_267=0, var_267_arg_0=0, var_267_arg_1=0, var_267_arg_2=0, var_268=0, var_269=0, var_269_arg_0=0, var_269_arg_1=0, var_269_arg_2=0, var_26_arg_0=6, var_27=0, var_271=0, var_271_arg_0=1, var_271_arg_1=0, var_271_arg_2=0, var_272=0, var_272_arg_0=0, var_272_arg_1=0, var_272_arg_2=0, var_274=0, var_274_arg_0=0, var_274_arg_1=0, var_274_arg_2=0, var_275=0, var_275_arg_0=0, var_275_arg_1=0, var_275_arg_2=0, var_277=16, var_277_arg_0=0, var_277_arg_1=0, var_277_arg_2=16, var_278=16, var_278_arg_0=0, var_278_arg_1=0, var_278_arg_2=16, var_27_arg_0=0, var_27_arg_1=6, var_28=0, var_280=0, var_280_arg_0=0, var_280_arg_1=0, var_280_arg_2=0, var_281=0, var_281_arg_0=0, var_281_arg_1=0, var_281_arg_2=0, var_283=0, var_283_arg_0=0, var_283_arg_1=0, var_283_arg_2=0, var_284=0, var_284_arg_0=0, var_284_arg_1=0, var_284_arg_2=0, var_286=0, var_286_arg_0=0, var_286_arg_1=0, var_286_arg_2=0, var_287=0, var_287_arg_0=0, var_287_arg_1=0, var_287_arg_2=0, var_289=0, var_289_arg_0=0, var_289_arg_1=0, var_289_arg_2=0, var_28_arg_0=0, var_28_arg_1=16, var_28_arg_2=0, var_290=0, var_290_arg_0=0, var_290_arg_1=0, var_290_arg_2=0, var_292=0, var_292_arg_0=0, var_292_arg_1=0, var_292_arg_2=0, var_293=0, var_293_arg_0=0, var_293_arg_1=0, var_293_arg_2=0, var_295=0, var_295_arg_0=0, var_295_arg_1=0, var_295_arg_2=0, var_296=0, var_296_arg_0=0, var_296_arg_1=0, var_296_arg_2=0, var_298=0, var_298_arg_0=0, var_299=0, var_299_arg_0=0, var_299_arg_1=0, var_30=5, var_300=0, var_300_arg_0=0, var_301=0, var_301_arg_0=0, var_301_arg_1=0, var_302=0, var_302_arg_0=0, var_302_arg_1=0, var_302_arg_2=0, var_304=0, var_304_arg_0=1, var_304_arg_1=0, var_304_arg_2=0, var_305=0, var_305_arg_0=0, var_305_arg_1=0, var_305_arg_2=0, var_307=0, var_307_arg_0=1, var_307_arg_1=0, var_307_arg_2=0, var_308=0, var_308_arg_0=0, var_308_arg_1=0, var_308_arg_2=0, var_31=255, var_310=0, var_310_arg_0=0, var_310_arg_1=0, var_310_arg_2=0, var_311=0, var_311_arg_0=0, var_311_arg_1=0, var_311_arg_2=0, var_313=0, var_313_arg_0=1, var_313_arg_1=0, var_313_arg_2=0, var_314=0, var_314_arg_0=0, var_314_arg_1=0, var_314_arg_2=0, var_317=250, var_317_arg_0=1, var_317_arg_1=250, var_317_arg_2=250, var_318=250, var_318_arg_0=0, var_318_arg_1=0, var_318_arg_2=250, var_31_arg_0=255, var_32=0, var_32_arg_0=0, var_32_arg_1=255, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_35=4, var_36=255, var_36_arg_0=255, var_37=0, var_37_arg_0=0, var_37_arg_1=255, var_38=0, var_38_arg_0=0, var_38_arg_1=0, var_38_arg_2=0, var_41=3, var_42=0, var_42_arg_0=0, var_43=1, var_43_arg_0=0, var_43_arg_1=0, var_44=0, var_44_arg_0=1, var_44_arg_1=0, var_44_arg_2=0, var_46=2, var_47=24, var_47_arg_0=24, var_48=0, var_48_arg_0=0, var_48_arg_1=24, var_49=0, var_49_arg_0=0, var_49_arg_1=0, var_49_arg_2=0, var_51=1, var_52=1, var_52_arg_0=1, var_53=0, var_53_arg_0=0, var_53_arg_1=1, var_54=0, var_54_arg_0=0, var_54_arg_1=0, var_54_arg_2=0, var_56=0, var_56_arg_0=0, var_57=0, var_57_arg_0=0, var_58=0, var_58_arg_0=0, var_58_arg_1=0, var_58_arg_2=0, var_61=0, var_61_arg_0=0, var_62=2, var_62_arg_0=0, var_64=9, var_65=9, var_65_arg_0=9, var_66=0, var_66_arg_0=0, var_66_arg_1=9, var_70=10, var_70_arg_0=0, var_71=0, var_71_arg_0=0, var_71_arg_1=10, var_73=0, var_73_arg_0=0, var_74=0, var_74_arg_0=0, var_74_arg_1=0, var_75=0, var_75_arg_0=0, var_76=0, var_76_arg_0=254, var_76_arg_1=0, var_77=0, var_77_arg_0=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79=0, var_79_arg_0=0, var_80=0, var_80_arg_0=0, var_80_arg_1=0, var_81=0, var_82=0, var_82_arg_0=0, var_82_arg_1=0, var_82_arg_2=0, var_83=0, var_83_arg_0=0, var_84=0, var_84_arg_0=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=1, var_86_arg_0=0, var_88=1, var_88_arg_0=0, var_88_arg_1=0, var_89=1, var_89_arg_0=1, var_89_arg_1=1, var_93=1, var_93_arg_0=0, var_93_arg_1=0, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=1, var_95_arg_1=255, var_97=1, var_97_arg_0=0, var_98=1, var_98_arg_0=254, var_99=1, var_99_arg_0=1, var_99_arg_1=1] [L108] SORT_13 var_65_arg_0 = var_64; [L109] var_65_arg_0 = var_65_arg_0 & mask_SORT_13 [L110] SORT_11 var_65 = var_65_arg_0; [L111] SORT_11 var_66_arg_0 = state_60; [L112] SORT_11 var_66_arg_1 = var_65; [L113] SORT_1 var_66 = var_66_arg_0 == var_66_arg_1; [L114] SORT_1 var_97_arg_0 = var_66; [L115] SORT_1 var_97 = ~var_97_arg_0; [L116] SORT_1 var_98_arg_0 = input_6; [L117] SORT_1 var_98 = ~var_98_arg_0; [L118] SORT_1 var_99_arg_0 = var_97; [L119] SORT_1 var_99_arg_1 = var_98; [L120] SORT_1 var_99 = var_99_arg_0 | var_99_arg_1; [L121] SORT_1 var_100_arg_0 = var_51; [L122] SORT_1 var_100 = ~var_100_arg_0; [L123] SORT_1 var_101_arg_0 = var_99; [L124] SORT_1 var_101_arg_1 = var_100; [L125] SORT_1 var_101 = var_101_arg_0 | var_101_arg_1; [L126] var_101 = var_101 & mask_SORT_1 [L127] SORT_1 constr_102_arg_0 = var_101; VAL [bad_115_arg_0=0, constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=3, input_4=6, input_5=1, input_6=3, input_7=0, input_8=4, input_9=13, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=255, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=128, msb_SORT_40=2, next_270_arg_1=0, next_273_arg_1=0, next_276_arg_1=0, next_279_arg_1=16, next_282_arg_1=0, next_285_arg_1=0, next_288_arg_1=0, next_291_arg_1=0, next_294_arg_1=0, next_297_arg_1=0, next_303_arg_1=0, next_306_arg_1=0, next_309_arg_1=0, next_312_arg_1=0, next_315_arg_1=0, next_316_arg_1=0, next_319_arg_1=250, state_10=0, state_12=0, state_136=250, state_18=0, state_24=16, state_29=0, state_34=0, state_39=0, state_45=0, state_50=0, state_55=0, state_60=0, state_68=0, state_69=0, state_72=0, state_87=0, state_91=0, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=2, var_103=249, var_103_arg_0=2, var_104=0, var_104_arg_0=252, var_105=0, var_105_arg_0=249, var_105_arg_1=0, var_106=1, var_106_arg_0=1, var_107=1, var_107_arg_0=0, var_107_arg_1=1, var_110=1, var_110_arg_0=1, var_110_arg_1=1, var_110_arg_2=1, var_111=0, var_112=0, var_112_arg_0=1, var_112_arg_1=0, var_112_arg_2=1, var_113=2, var_113_arg_0=1, var_114=0, var_114_arg_0=0, var_114_arg_1=2, var_119=1, var_119_arg_0=254, var_119_arg_1=252, var_120=1, var_120_arg_0=1, var_120_arg_1=0, var_137=11, var_137_arg_0=250, var_138=1, var_138_arg_0=11, var_139=254, var_139_arg_0=1, var_14=0, var_140=0, var_140_arg_0=254, var_140_arg_1=254, var_145=1, var_145_arg_0=1, var_146=0, var_146_arg_0=11, var_146_arg_1=1, var_147=0, var_147_arg_0=254, var_147_arg_1=0, var_14_arg_0=0, var_15=8, var_152=11, var_152_arg_0=11, var_153=1, var_153_arg_0=11, var_153_arg_1=11, var_154=0, var_154_arg_0=254, var_154_arg_1=1, var_159=1, var_159_arg_0=1, var_16=0, var_160=0, var_160_arg_0=11, var_160_arg_1=1, var_161=0, var_161_arg_0=254, var_161_arg_1=0, var_166=14, var_166_arg_0=14, var_167=0, var_167_arg_0=11, var_167_arg_1=14, var_168=0, var_168_arg_0=254, var_168_arg_1=0, var_16_arg_0=0, var_16_arg_1=8, var_17=255, var_173=0, var_173_arg_0=0, var_174=0, var_174_arg_0=11, var_174_arg_1=0, var_175=0, var_175_arg_0=254, var_175_arg_1=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=255, var_180=11, var_180_arg_0=11, var_181=1, var_181_arg_0=11, var_181_arg_1=11, var_182=0, var_182_arg_0=254, var_182_arg_1=1, var_187=11, var_187_arg_0=11, var_188=1, var_188_arg_0=11, var_188_arg_1=11, var_189=0, var_189_arg_0=254, var_189_arg_1=1, var_194=0, var_194_arg_0=11, var_194_arg_1=8, var_195=0, var_195_arg_0=254, var_195_arg_1=0, var_198=0, var_198_arg_0=0, var_199=0, var_199_arg_0=0, var_199_arg_1=0, var_20=7, var_204=0, var_204_arg_0=0, var_205=250, var_205_arg_0=250, var_205_arg_1=0, var_21=0, var_21_arg_0=0, var_22=1, var_224=27, var_224_arg_0=3, var_224_arg_1=254, var_225=0, var_225_arg_0=0, var_225_arg_1=27, var_228=1, var_228_arg_0=0, var_22_arg_0=0, var_22_arg_1=0, var_23=0, var_233=1, var_233_arg_0=27, var_233_arg_1=1, var_236=0, var_236_arg_0=0, var_236_arg_1=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=255, var_248=254, var_248_arg_0=254, var_248_arg_1=252, var_249=248, var_249_arg_0=254, var_249_arg_1=0, var_25=6, var_250=0, var_250_arg_0=248, var_250_arg_1=0, var_26=6, var_267=0, var_267_arg_0=0, var_267_arg_1=0, var_267_arg_2=0, var_268=0, var_269=0, var_269_arg_0=0, var_269_arg_1=0, var_269_arg_2=0, var_26_arg_0=6, var_27=0, var_271=0, var_271_arg_0=1, var_271_arg_1=0, var_271_arg_2=0, var_272=0, var_272_arg_0=0, var_272_arg_1=0, var_272_arg_2=0, var_274=0, var_274_arg_0=0, var_274_arg_1=0, var_274_arg_2=0, var_275=0, var_275_arg_0=0, var_275_arg_1=0, var_275_arg_2=0, var_277=16, var_277_arg_0=0, var_277_arg_1=0, var_277_arg_2=16, var_278=16, var_278_arg_0=0, var_278_arg_1=0, var_278_arg_2=16, var_27_arg_0=0, var_27_arg_1=6, var_28=0, var_280=0, var_280_arg_0=0, var_280_arg_1=0, var_280_arg_2=0, var_281=0, var_281_arg_0=0, var_281_arg_1=0, var_281_arg_2=0, var_283=0, var_283_arg_0=0, var_283_arg_1=0, var_283_arg_2=0, var_284=0, var_284_arg_0=0, var_284_arg_1=0, var_284_arg_2=0, var_286=0, var_286_arg_0=0, var_286_arg_1=0, var_286_arg_2=0, var_287=0, var_287_arg_0=0, var_287_arg_1=0, var_287_arg_2=0, var_289=0, var_289_arg_0=0, var_289_arg_1=0, var_289_arg_2=0, var_28_arg_0=0, var_28_arg_1=16, var_28_arg_2=0, var_290=0, var_290_arg_0=0, var_290_arg_1=0, var_290_arg_2=0, var_292=0, var_292_arg_0=0, var_292_arg_1=0, var_292_arg_2=0, var_293=0, var_293_arg_0=0, var_293_arg_1=0, var_293_arg_2=0, var_295=0, var_295_arg_0=0, var_295_arg_1=0, var_295_arg_2=0, var_296=0, var_296_arg_0=0, var_296_arg_1=0, var_296_arg_2=0, var_298=0, var_298_arg_0=0, var_299=0, var_299_arg_0=0, var_299_arg_1=0, var_30=5, var_300=0, var_300_arg_0=0, var_301=0, var_301_arg_0=0, var_301_arg_1=0, var_302=0, var_302_arg_0=0, var_302_arg_1=0, var_302_arg_2=0, var_304=0, var_304_arg_0=1, var_304_arg_1=0, var_304_arg_2=0, var_305=0, var_305_arg_0=0, var_305_arg_1=0, var_305_arg_2=0, var_307=0, var_307_arg_0=1, var_307_arg_1=0, var_307_arg_2=0, var_308=0, var_308_arg_0=0, var_308_arg_1=0, var_308_arg_2=0, var_31=255, var_310=0, var_310_arg_0=0, var_310_arg_1=0, var_310_arg_2=0, var_311=0, var_311_arg_0=0, var_311_arg_1=0, var_311_arg_2=0, var_313=0, var_313_arg_0=1, var_313_arg_1=0, var_313_arg_2=0, var_314=0, var_314_arg_0=0, var_314_arg_1=0, var_314_arg_2=0, var_317=250, var_317_arg_0=1, var_317_arg_1=250, var_317_arg_2=250, var_318=250, var_318_arg_0=0, var_318_arg_1=0, var_318_arg_2=250, var_31_arg_0=255, var_32=0, var_32_arg_0=0, var_32_arg_1=255, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_35=4, var_36=255, var_36_arg_0=255, var_37=0, var_37_arg_0=0, var_37_arg_1=255, var_38=0, var_38_arg_0=0, var_38_arg_1=0, var_38_arg_2=0, var_41=3, var_42=0, var_42_arg_0=0, var_43=1, var_43_arg_0=0, var_43_arg_1=0, var_44=0, var_44_arg_0=1, var_44_arg_1=0, var_44_arg_2=0, var_46=2, var_47=24, var_47_arg_0=24, var_48=0, var_48_arg_0=0, var_48_arg_1=24, var_49=0, var_49_arg_0=0, var_49_arg_1=0, var_49_arg_2=0, var_51=1, var_52=1, var_52_arg_0=1, var_53=0, var_53_arg_0=0, var_53_arg_1=1, var_54=0, var_54_arg_0=0, var_54_arg_1=0, var_54_arg_2=0, var_56=0, var_56_arg_0=0, var_57=0, var_57_arg_0=0, var_58=0, var_58_arg_0=0, var_58_arg_1=0, var_58_arg_2=0, var_61=0, var_61_arg_0=0, var_62=2, var_62_arg_0=0, var_64=9, var_65=255, var_65_arg_0=255, var_66=0, var_66_arg_0=0, var_66_arg_1=255, var_70=10, var_70_arg_0=0, var_71=0, var_71_arg_0=0, var_71_arg_1=10, var_73=0, var_73_arg_0=0, var_74=0, var_74_arg_0=0, var_74_arg_1=0, var_75=0, var_75_arg_0=0, var_76=0, var_76_arg_0=254, var_76_arg_1=0, var_77=0, var_77_arg_0=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79=0, var_79_arg_0=0, var_80=0, var_80_arg_0=0, var_80_arg_1=0, var_81=0, var_82=0, var_82_arg_0=0, var_82_arg_1=0, var_82_arg_2=0, var_83=0, var_83_arg_0=0, var_84=0, var_84_arg_0=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=1, var_86_arg_0=0, var_88=1, var_88_arg_0=0, var_88_arg_1=0, var_89=1, var_89_arg_0=1, var_89_arg_1=1, var_93=1, var_93_arg_0=0, var_93_arg_1=0, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=1, var_95_arg_1=255, var_97=0, var_97_arg_0=0, var_98=8, var_98_arg_0=3, var_99=1, var_99_arg_0=0, var_99_arg_1=8] [L128] CALL assume_abort_if_not(constr_102_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) [L128] RET assume_abort_if_not(constr_102_arg_0) VAL [bad_115_arg_0=0, constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=3, input_4=6, input_5=1, input_6=3, input_7=0, input_8=4, input_9=13, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=255, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=128, msb_SORT_40=2, next_270_arg_1=0, next_273_arg_1=0, next_276_arg_1=0, next_279_arg_1=16, next_282_arg_1=0, next_285_arg_1=0, next_288_arg_1=0, next_291_arg_1=0, next_294_arg_1=0, next_297_arg_1=0, next_303_arg_1=0, next_306_arg_1=0, next_309_arg_1=0, next_312_arg_1=0, next_315_arg_1=0, next_316_arg_1=0, next_319_arg_1=250, state_10=0, state_12=0, state_136=250, state_18=0, state_24=16, state_29=0, state_34=0, state_39=0, state_45=0, state_50=0, state_55=0, state_60=0, state_68=0, state_69=0, state_72=0, state_87=0, state_91=0, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=2, var_103=249, var_103_arg_0=2, var_104=0, var_104_arg_0=252, var_105=0, var_105_arg_0=249, var_105_arg_1=0, var_106=1, var_106_arg_0=1, var_107=1, var_107_arg_0=0, var_107_arg_1=1, var_110=1, var_110_arg_0=1, var_110_arg_1=1, var_110_arg_2=1, var_111=0, var_112=0, var_112_arg_0=1, var_112_arg_1=0, var_112_arg_2=1, var_113=2, var_113_arg_0=1, var_114=0, var_114_arg_0=0, var_114_arg_1=2, var_119=1, var_119_arg_0=254, var_119_arg_1=252, var_120=1, var_120_arg_0=1, var_120_arg_1=0, var_137=11, var_137_arg_0=250, var_138=1, var_138_arg_0=11, var_139=254, var_139_arg_0=1, var_14=0, var_140=0, var_140_arg_0=254, var_140_arg_1=254, var_145=1, var_145_arg_0=1, var_146=0, var_146_arg_0=11, var_146_arg_1=1, var_147=0, var_147_arg_0=254, var_147_arg_1=0, var_14_arg_0=0, var_15=8, var_152=11, var_152_arg_0=11, var_153=1, var_153_arg_0=11, var_153_arg_1=11, var_154=0, var_154_arg_0=254, var_154_arg_1=1, var_159=1, var_159_arg_0=1, var_16=0, var_160=0, var_160_arg_0=11, var_160_arg_1=1, var_161=0, var_161_arg_0=254, var_161_arg_1=0, var_166=14, var_166_arg_0=14, var_167=0, var_167_arg_0=11, var_167_arg_1=14, var_168=0, var_168_arg_0=254, var_168_arg_1=0, var_16_arg_0=0, var_16_arg_1=8, var_17=255, var_173=0, var_173_arg_0=0, var_174=0, var_174_arg_0=11, var_174_arg_1=0, var_175=0, var_175_arg_0=254, var_175_arg_1=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=255, var_180=11, var_180_arg_0=11, var_181=1, var_181_arg_0=11, var_181_arg_1=11, var_182=0, var_182_arg_0=254, var_182_arg_1=1, var_187=11, var_187_arg_0=11, var_188=1, var_188_arg_0=11, var_188_arg_1=11, var_189=0, var_189_arg_0=254, var_189_arg_1=1, var_194=0, var_194_arg_0=11, var_194_arg_1=8, var_195=0, var_195_arg_0=254, var_195_arg_1=0, var_198=0, var_198_arg_0=0, var_199=0, var_199_arg_0=0, var_199_arg_1=0, var_20=7, var_204=0, var_204_arg_0=0, var_205=250, var_205_arg_0=250, var_205_arg_1=0, var_21=0, var_21_arg_0=0, var_22=1, var_224=27, var_224_arg_0=3, var_224_arg_1=254, var_225=0, var_225_arg_0=0, var_225_arg_1=27, var_228=1, var_228_arg_0=0, var_22_arg_0=0, var_22_arg_1=0, var_23=0, var_233=1, var_233_arg_0=27, var_233_arg_1=1, var_236=0, var_236_arg_0=0, var_236_arg_1=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=255, var_248=254, var_248_arg_0=254, var_248_arg_1=252, var_249=248, var_249_arg_0=254, var_249_arg_1=0, var_25=6, var_250=0, var_250_arg_0=248, var_250_arg_1=0, var_26=6, var_267=0, var_267_arg_0=0, var_267_arg_1=0, var_267_arg_2=0, var_268=0, var_269=0, var_269_arg_0=0, var_269_arg_1=0, var_269_arg_2=0, var_26_arg_0=6, var_27=0, var_271=0, var_271_arg_0=1, var_271_arg_1=0, var_271_arg_2=0, var_272=0, var_272_arg_0=0, var_272_arg_1=0, var_272_arg_2=0, var_274=0, var_274_arg_0=0, var_274_arg_1=0, var_274_arg_2=0, var_275=0, var_275_arg_0=0, var_275_arg_1=0, var_275_arg_2=0, var_277=16, var_277_arg_0=0, var_277_arg_1=0, var_277_arg_2=16, var_278=16, var_278_arg_0=0, var_278_arg_1=0, var_278_arg_2=16, var_27_arg_0=0, var_27_arg_1=6, var_28=0, var_280=0, var_280_arg_0=0, var_280_arg_1=0, var_280_arg_2=0, var_281=0, var_281_arg_0=0, var_281_arg_1=0, var_281_arg_2=0, var_283=0, var_283_arg_0=0, var_283_arg_1=0, var_283_arg_2=0, var_284=0, var_284_arg_0=0, var_284_arg_1=0, var_284_arg_2=0, var_286=0, var_286_arg_0=0, var_286_arg_1=0, var_286_arg_2=0, var_287=0, var_287_arg_0=0, var_287_arg_1=0, var_287_arg_2=0, var_289=0, var_289_arg_0=0, var_289_arg_1=0, var_289_arg_2=0, var_28_arg_0=0, var_28_arg_1=16, var_28_arg_2=0, var_290=0, var_290_arg_0=0, var_290_arg_1=0, var_290_arg_2=0, var_292=0, var_292_arg_0=0, var_292_arg_1=0, var_292_arg_2=0, var_293=0, var_293_arg_0=0, var_293_arg_1=0, var_293_arg_2=0, var_295=0, var_295_arg_0=0, var_295_arg_1=0, var_295_arg_2=0, var_296=0, var_296_arg_0=0, var_296_arg_1=0, var_296_arg_2=0, var_298=0, var_298_arg_0=0, var_299=0, var_299_arg_0=0, var_299_arg_1=0, var_30=5, var_300=0, var_300_arg_0=0, var_301=0, var_301_arg_0=0, var_301_arg_1=0, var_302=0, var_302_arg_0=0, var_302_arg_1=0, var_302_arg_2=0, var_304=0, var_304_arg_0=1, var_304_arg_1=0, var_304_arg_2=0, var_305=0, var_305_arg_0=0, var_305_arg_1=0, var_305_arg_2=0, var_307=0, var_307_arg_0=1, var_307_arg_1=0, var_307_arg_2=0, var_308=0, var_308_arg_0=0, var_308_arg_1=0, var_308_arg_2=0, var_31=255, var_310=0, var_310_arg_0=0, var_310_arg_1=0, var_310_arg_2=0, var_311=0, var_311_arg_0=0, var_311_arg_1=0, var_311_arg_2=0, var_313=0, var_313_arg_0=1, var_313_arg_1=0, var_313_arg_2=0, var_314=0, var_314_arg_0=0, var_314_arg_1=0, var_314_arg_2=0, var_317=250, var_317_arg_0=1, var_317_arg_1=250, var_317_arg_2=250, var_318=250, var_318_arg_0=0, var_318_arg_1=0, var_318_arg_2=250, var_31_arg_0=255, var_32=0, var_32_arg_0=0, var_32_arg_1=255, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_35=4, var_36=255, var_36_arg_0=255, var_37=0, var_37_arg_0=0, var_37_arg_1=255, var_38=0, var_38_arg_0=0, var_38_arg_1=0, var_38_arg_2=0, var_41=3, var_42=0, var_42_arg_0=0, var_43=1, var_43_arg_0=0, var_43_arg_1=0, var_44=0, var_44_arg_0=1, var_44_arg_1=0, var_44_arg_2=0, var_46=2, var_47=24, var_47_arg_0=24, var_48=0, var_48_arg_0=0, var_48_arg_1=24, var_49=0, var_49_arg_0=0, var_49_arg_1=0, var_49_arg_2=0, var_51=1, var_52=1, var_52_arg_0=1, var_53=0, var_53_arg_0=0, var_53_arg_1=1, var_54=0, var_54_arg_0=0, var_54_arg_1=0, var_54_arg_2=0, var_56=0, var_56_arg_0=0, var_57=0, var_57_arg_0=0, var_58=0, var_58_arg_0=0, var_58_arg_1=0, var_58_arg_2=0, var_61=0, var_61_arg_0=0, var_62=2, var_62_arg_0=0, var_64=9, var_65=255, var_65_arg_0=255, var_66=0, var_66_arg_0=0, var_66_arg_1=255, var_70=10, var_70_arg_0=0, var_71=0, var_71_arg_0=0, var_71_arg_1=10, var_73=0, var_73_arg_0=0, var_74=0, var_74_arg_0=0, var_74_arg_1=0, var_75=0, var_75_arg_0=0, var_76=0, var_76_arg_0=254, var_76_arg_1=0, var_77=0, var_77_arg_0=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79=0, var_79_arg_0=0, var_80=0, var_80_arg_0=0, var_80_arg_1=0, var_81=0, var_82=0, var_82_arg_0=0, var_82_arg_1=0, var_82_arg_2=0, var_83=0, var_83_arg_0=0, var_84=0, var_84_arg_0=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=1, var_86_arg_0=0, var_88=1, var_88_arg_0=0, var_88_arg_1=0, var_89=1, var_89_arg_0=1, var_89_arg_1=1, var_93=1, var_93_arg_0=0, var_93_arg_1=0, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=1, var_95_arg_1=255, var_97=0, var_97_arg_0=0, var_98=8, var_98_arg_0=3, var_99=1, var_99_arg_0=0, var_99_arg_1=8] [L129] SORT_11 var_61_arg_0 = state_60; [L130] SORT_1 var_61 = var_61_arg_0 != 0; [L131] SORT_1 var_62_arg_0 = var_61; [L132] SORT_1 var_62 = ~var_62_arg_0; [L133] SORT_1 var_103_arg_0 = var_62; [L134] SORT_1 var_103 = ~var_103_arg_0; [L135] SORT_1 var_104_arg_0 = input_5; [L136] SORT_1 var_104 = ~var_104_arg_0; [L137] SORT_1 var_105_arg_0 = var_103; [L138] SORT_1 var_105_arg_1 = var_104; [L139] SORT_1 var_105 = var_105_arg_0 | var_105_arg_1; [L140] SORT_1 var_106_arg_0 = var_51; [L141] SORT_1 var_106 = ~var_106_arg_0; [L142] SORT_1 var_107_arg_0 = var_105; [L143] SORT_1 var_107_arg_1 = var_106; [L144] SORT_1 var_107 = var_107_arg_0 | var_107_arg_1; [L145] var_107 = var_107 & mask_SORT_1 [L146] SORT_1 constr_108_arg_0 = var_107; VAL [bad_115_arg_0=0, constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=3, input_4=6, input_5=1, input_6=3, input_7=0, input_8=4, input_9=13, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=255, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=128, msb_SORT_40=2, next_270_arg_1=0, next_273_arg_1=0, next_276_arg_1=0, next_279_arg_1=16, next_282_arg_1=0, next_285_arg_1=0, next_288_arg_1=0, next_291_arg_1=0, next_294_arg_1=0, next_297_arg_1=0, next_303_arg_1=0, next_306_arg_1=0, next_309_arg_1=0, next_312_arg_1=0, next_315_arg_1=0, next_316_arg_1=0, next_319_arg_1=250, state_10=0, state_12=0, state_136=250, state_18=0, state_24=16, state_29=0, state_34=0, state_39=0, state_45=0, state_50=0, state_55=0, state_60=0, state_68=0, state_69=0, state_72=0, state_87=0, state_91=0, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=2, var_103=1, var_103_arg_0=5, var_104=1, var_104_arg_0=1, var_105=1, var_105_arg_0=1, var_105_arg_1=1, var_106=1, var_106_arg_0=1, var_107=1, var_107_arg_0=1, var_107_arg_1=1, var_110=1, var_110_arg_0=1, var_110_arg_1=1, var_110_arg_2=1, var_111=0, var_112=0, var_112_arg_0=1, var_112_arg_1=0, var_112_arg_2=1, var_113=2, var_113_arg_0=1, var_114=0, var_114_arg_0=0, var_114_arg_1=2, var_119=1, var_119_arg_0=254, var_119_arg_1=252, var_120=1, var_120_arg_0=1, var_120_arg_1=0, var_137=11, var_137_arg_0=250, var_138=1, var_138_arg_0=11, var_139=254, var_139_arg_0=1, var_14=0, var_140=0, var_140_arg_0=254, var_140_arg_1=254, var_145=1, var_145_arg_0=1, var_146=0, var_146_arg_0=11, var_146_arg_1=1, var_147=0, var_147_arg_0=254, var_147_arg_1=0, var_14_arg_0=0, var_15=8, var_152=11, var_152_arg_0=11, var_153=1, var_153_arg_0=11, var_153_arg_1=11, var_154=0, var_154_arg_0=254, var_154_arg_1=1, var_159=1, var_159_arg_0=1, var_16=0, var_160=0, var_160_arg_0=11, var_160_arg_1=1, var_161=0, var_161_arg_0=254, var_161_arg_1=0, var_166=14, var_166_arg_0=14, var_167=0, var_167_arg_0=11, var_167_arg_1=14, var_168=0, var_168_arg_0=254, var_168_arg_1=0, var_16_arg_0=0, var_16_arg_1=8, var_17=255, var_173=0, var_173_arg_0=0, var_174=0, var_174_arg_0=11, var_174_arg_1=0, var_175=0, var_175_arg_0=254, var_175_arg_1=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=255, var_180=11, var_180_arg_0=11, var_181=1, var_181_arg_0=11, var_181_arg_1=11, var_182=0, var_182_arg_0=254, var_182_arg_1=1, var_187=11, var_187_arg_0=11, var_188=1, var_188_arg_0=11, var_188_arg_1=11, var_189=0, var_189_arg_0=254, var_189_arg_1=1, var_194=0, var_194_arg_0=11, var_194_arg_1=8, var_195=0, var_195_arg_0=254, var_195_arg_1=0, var_198=0, var_198_arg_0=0, var_199=0, var_199_arg_0=0, var_199_arg_1=0, var_20=7, var_204=0, var_204_arg_0=0, var_205=250, var_205_arg_0=250, var_205_arg_1=0, var_21=0, var_21_arg_0=0, var_22=1, var_224=27, var_224_arg_0=3, var_224_arg_1=254, var_225=0, var_225_arg_0=0, var_225_arg_1=27, var_228=1, var_228_arg_0=0, var_22_arg_0=0, var_22_arg_1=0, var_23=0, var_233=1, var_233_arg_0=27, var_233_arg_1=1, var_236=0, var_236_arg_0=0, var_236_arg_1=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=255, var_248=254, var_248_arg_0=254, var_248_arg_1=252, var_249=248, var_249_arg_0=254, var_249_arg_1=0, var_25=6, var_250=0, var_250_arg_0=248, var_250_arg_1=0, var_26=6, var_267=0, var_267_arg_0=0, var_267_arg_1=0, var_267_arg_2=0, var_268=0, var_269=0, var_269_arg_0=0, var_269_arg_1=0, var_269_arg_2=0, var_26_arg_0=6, var_27=0, var_271=0, var_271_arg_0=1, var_271_arg_1=0, var_271_arg_2=0, var_272=0, var_272_arg_0=0, var_272_arg_1=0, var_272_arg_2=0, var_274=0, var_274_arg_0=0, var_274_arg_1=0, var_274_arg_2=0, var_275=0, var_275_arg_0=0, var_275_arg_1=0, var_275_arg_2=0, var_277=16, var_277_arg_0=0, var_277_arg_1=0, var_277_arg_2=16, var_278=16, var_278_arg_0=0, var_278_arg_1=0, var_278_arg_2=16, var_27_arg_0=0, var_27_arg_1=6, var_28=0, var_280=0, var_280_arg_0=0, var_280_arg_1=0, var_280_arg_2=0, var_281=0, var_281_arg_0=0, var_281_arg_1=0, var_281_arg_2=0, var_283=0, var_283_arg_0=0, var_283_arg_1=0, var_283_arg_2=0, var_284=0, var_284_arg_0=0, var_284_arg_1=0, var_284_arg_2=0, var_286=0, var_286_arg_0=0, var_286_arg_1=0, var_286_arg_2=0, var_287=0, var_287_arg_0=0, var_287_arg_1=0, var_287_arg_2=0, var_289=0, var_289_arg_0=0, var_289_arg_1=0, var_289_arg_2=0, var_28_arg_0=0, var_28_arg_1=16, var_28_arg_2=0, var_290=0, var_290_arg_0=0, var_290_arg_1=0, var_290_arg_2=0, var_292=0, var_292_arg_0=0, var_292_arg_1=0, var_292_arg_2=0, var_293=0, var_293_arg_0=0, var_293_arg_1=0, var_293_arg_2=0, var_295=0, var_295_arg_0=0, var_295_arg_1=0, var_295_arg_2=0, var_296=0, var_296_arg_0=0, var_296_arg_1=0, var_296_arg_2=0, var_298=0, var_298_arg_0=0, var_299=0, var_299_arg_0=0, var_299_arg_1=0, var_30=5, var_300=0, var_300_arg_0=0, var_301=0, var_301_arg_0=0, var_301_arg_1=0, var_302=0, var_302_arg_0=0, var_302_arg_1=0, var_302_arg_2=0, var_304=0, var_304_arg_0=1, var_304_arg_1=0, var_304_arg_2=0, var_305=0, var_305_arg_0=0, var_305_arg_1=0, var_305_arg_2=0, var_307=0, var_307_arg_0=1, var_307_arg_1=0, var_307_arg_2=0, var_308=0, var_308_arg_0=0, var_308_arg_1=0, var_308_arg_2=0, var_31=255, var_310=0, var_310_arg_0=0, var_310_arg_1=0, var_310_arg_2=0, var_311=0, var_311_arg_0=0, var_311_arg_1=0, var_311_arg_2=0, var_313=0, var_313_arg_0=1, var_313_arg_1=0, var_313_arg_2=0, var_314=0, var_314_arg_0=0, var_314_arg_1=0, var_314_arg_2=0, var_317=250, var_317_arg_0=1, var_317_arg_1=250, var_317_arg_2=250, var_318=250, var_318_arg_0=0, var_318_arg_1=0, var_318_arg_2=250, var_31_arg_0=255, var_32=0, var_32_arg_0=0, var_32_arg_1=255, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_35=4, var_36=255, var_36_arg_0=255, var_37=0, var_37_arg_0=0, var_37_arg_1=255, var_38=0, var_38_arg_0=0, var_38_arg_1=0, var_38_arg_2=0, var_41=3, var_42=0, var_42_arg_0=0, var_43=1, var_43_arg_0=0, var_43_arg_1=0, var_44=0, var_44_arg_0=1, var_44_arg_1=0, var_44_arg_2=0, var_46=2, var_47=24, var_47_arg_0=24, var_48=0, var_48_arg_0=0, var_48_arg_1=24, var_49=0, var_49_arg_0=0, var_49_arg_1=0, var_49_arg_2=0, var_51=1, var_52=1, var_52_arg_0=1, var_53=0, var_53_arg_0=0, var_53_arg_1=1, var_54=0, var_54_arg_0=0, var_54_arg_1=0, var_54_arg_2=0, var_56=0, var_56_arg_0=0, var_57=0, var_57_arg_0=0, var_58=0, var_58_arg_0=0, var_58_arg_1=0, var_58_arg_2=0, var_61=0, var_61_arg_0=0, var_62=5, var_62_arg_0=0, var_64=9, var_65=255, var_65_arg_0=255, var_66=0, var_66_arg_0=0, var_66_arg_1=255, var_70=10, var_70_arg_0=0, var_71=0, var_71_arg_0=0, var_71_arg_1=10, var_73=0, var_73_arg_0=0, var_74=0, var_74_arg_0=0, var_74_arg_1=0, var_75=0, var_75_arg_0=0, var_76=0, var_76_arg_0=254, var_76_arg_1=0, var_77=0, var_77_arg_0=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79=0, var_79_arg_0=0, var_80=0, var_80_arg_0=0, var_80_arg_1=0, var_81=0, var_82=0, var_82_arg_0=0, var_82_arg_1=0, var_82_arg_2=0, var_83=0, var_83_arg_0=0, var_84=0, var_84_arg_0=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=1, var_86_arg_0=0, var_88=1, var_88_arg_0=0, var_88_arg_1=0, var_89=1, var_89_arg_0=1, var_89_arg_1=1, var_93=1, var_93_arg_0=0, var_93_arg_1=0, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=1, var_95_arg_1=255, var_97=0, var_97_arg_0=0, var_98=8, var_98_arg_0=3, var_99=1, var_99_arg_0=0, var_99_arg_1=8] [L147] CALL assume_abort_if_not(constr_108_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) [L147] RET assume_abort_if_not(constr_108_arg_0) VAL [bad_115_arg_0=0, constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=3, input_4=6, input_5=1, input_6=3, input_7=0, input_8=4, input_9=13, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=255, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=128, msb_SORT_40=2, next_270_arg_1=0, next_273_arg_1=0, next_276_arg_1=0, next_279_arg_1=16, next_282_arg_1=0, next_285_arg_1=0, next_288_arg_1=0, next_291_arg_1=0, next_294_arg_1=0, next_297_arg_1=0, next_303_arg_1=0, next_306_arg_1=0, next_309_arg_1=0, next_312_arg_1=0, next_315_arg_1=0, next_316_arg_1=0, next_319_arg_1=250, state_10=0, state_12=0, state_136=250, state_18=0, state_24=16, state_29=0, state_34=0, state_39=0, state_45=0, state_50=0, state_55=0, state_60=0, state_68=0, state_69=0, state_72=0, state_87=0, state_91=0, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=2, var_103=1, var_103_arg_0=5, var_104=1, var_104_arg_0=1, var_105=1, var_105_arg_0=1, var_105_arg_1=1, var_106=1, var_106_arg_0=1, var_107=1, var_107_arg_0=1, var_107_arg_1=1, var_110=1, var_110_arg_0=1, var_110_arg_1=1, var_110_arg_2=1, var_111=0, var_112=0, var_112_arg_0=1, var_112_arg_1=0, var_112_arg_2=1, var_113=2, var_113_arg_0=1, var_114=0, var_114_arg_0=0, var_114_arg_1=2, var_119=1, var_119_arg_0=254, var_119_arg_1=252, var_120=1, var_120_arg_0=1, var_120_arg_1=0, var_137=11, var_137_arg_0=250, var_138=1, var_138_arg_0=11, var_139=254, var_139_arg_0=1, var_14=0, var_140=0, var_140_arg_0=254, var_140_arg_1=254, var_145=1, var_145_arg_0=1, var_146=0, var_146_arg_0=11, var_146_arg_1=1, var_147=0, var_147_arg_0=254, var_147_arg_1=0, var_14_arg_0=0, var_15=8, var_152=11, var_152_arg_0=11, var_153=1, var_153_arg_0=11, var_153_arg_1=11, var_154=0, var_154_arg_0=254, var_154_arg_1=1, var_159=1, var_159_arg_0=1, var_16=0, var_160=0, var_160_arg_0=11, var_160_arg_1=1, var_161=0, var_161_arg_0=254, var_161_arg_1=0, var_166=14, var_166_arg_0=14, var_167=0, var_167_arg_0=11, var_167_arg_1=14, var_168=0, var_168_arg_0=254, var_168_arg_1=0, var_16_arg_0=0, var_16_arg_1=8, var_17=255, var_173=0, var_173_arg_0=0, var_174=0, var_174_arg_0=11, var_174_arg_1=0, var_175=0, var_175_arg_0=254, var_175_arg_1=0, var_17_arg_0=0, var_17_arg_1=0, var_17_arg_2=255, var_180=11, var_180_arg_0=11, var_181=1, var_181_arg_0=11, var_181_arg_1=11, var_182=0, var_182_arg_0=254, var_182_arg_1=1, var_187=11, var_187_arg_0=11, var_188=1, var_188_arg_0=11, var_188_arg_1=11, var_189=0, var_189_arg_0=254, var_189_arg_1=1, var_194=0, var_194_arg_0=11, var_194_arg_1=8, var_195=0, var_195_arg_0=254, var_195_arg_1=0, var_198=0, var_198_arg_0=0, var_199=0, var_199_arg_0=0, var_199_arg_1=0, var_20=7, var_204=0, var_204_arg_0=0, var_205=250, var_205_arg_0=250, var_205_arg_1=0, var_21=0, var_21_arg_0=0, var_22=1, var_224=27, var_224_arg_0=3, var_224_arg_1=254, var_225=0, var_225_arg_0=0, var_225_arg_1=27, var_228=1, var_228_arg_0=0, var_22_arg_0=0, var_22_arg_1=0, var_23=0, var_233=1, var_233_arg_0=27, var_233_arg_1=1, var_236=0, var_236_arg_0=0, var_236_arg_1=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=255, var_248=254, var_248_arg_0=254, var_248_arg_1=252, var_249=248, var_249_arg_0=254, var_249_arg_1=0, var_25=6, var_250=0, var_250_arg_0=248, var_250_arg_1=0, var_26=6, var_267=0, var_267_arg_0=0, var_267_arg_1=0, var_267_arg_2=0, var_268=0, var_269=0, var_269_arg_0=0, var_269_arg_1=0, var_269_arg_2=0, var_26_arg_0=6, var_27=0, var_271=0, var_271_arg_0=1, var_271_arg_1=0, var_271_arg_2=0, var_272=0, var_272_arg_0=0, var_272_arg_1=0, var_272_arg_2=0, var_274=0, var_274_arg_0=0, var_274_arg_1=0, var_274_arg_2=0, var_275=0, var_275_arg_0=0, var_275_arg_1=0, var_275_arg_2=0, var_277=16, var_277_arg_0=0, var_277_arg_1=0, var_277_arg_2=16, var_278=16, var_278_arg_0=0, var_278_arg_1=0, var_278_arg_2=16, var_27_arg_0=0, var_27_arg_1=6, var_28=0, var_280=0, var_280_arg_0=0, var_280_arg_1=0, var_280_arg_2=0, var_281=0, var_281_arg_0=0, var_281_arg_1=0, var_281_arg_2=0, var_283=0, var_283_arg_0=0, var_283_arg_1=0, var_283_arg_2=0, var_284=0, var_284_arg_0=0, var_284_arg_1=0, var_284_arg_2=0, var_286=0, var_286_arg_0=0, var_286_arg_1=0, var_286_arg_2=0, var_287=0, var_287_arg_0=0, var_287_arg_1=0, var_287_arg_2=0, var_289=0, var_289_arg_0=0, var_289_arg_1=0, var_289_arg_2=0, var_28_arg_0=0, var_28_arg_1=16, var_28_arg_2=0, var_290=0, var_290_arg_0=0, var_290_arg_1=0, var_290_arg_2=0, var_292=0, var_292_arg_0=0, var_292_arg_1=0, var_292_arg_2=0, var_293=0, var_293_arg_0=0, var_293_arg_1=0, var_293_arg_2=0, var_295=0, var_295_arg_0=0, var_295_arg_1=0, var_295_arg_2=0, var_296=0, var_296_arg_0=0, var_296_arg_1=0, var_296_arg_2=0, var_298=0, var_298_arg_0=0, var_299=0, var_299_arg_0=0, var_299_arg_1=0, var_30=5, var_300=0, var_300_arg_0=0, var_301=0, var_301_arg_0=0, var_301_arg_1=0, var_302=0, var_302_arg_0=0, var_302_arg_1=0, var_302_arg_2=0, var_304=0, var_304_arg_0=1, var_304_arg_1=0, var_304_arg_2=0, var_305=0, var_305_arg_0=0, var_305_arg_1=0, var_305_arg_2=0, var_307=0, var_307_arg_0=1, var_307_arg_1=0, var_307_arg_2=0, var_308=0, var_308_arg_0=0, var_308_arg_1=0, var_308_arg_2=0, var_31=255, var_310=0, var_310_arg_0=0, var_310_arg_1=0, var_310_arg_2=0, var_311=0, var_311_arg_0=0, var_311_arg_1=0, var_311_arg_2=0, var_313=0, var_313_arg_0=1, var_313_arg_1=0, var_313_arg_2=0, var_314=0, var_314_arg_0=0, var_314_arg_1=0, var_314_arg_2=0, var_317=250, var_317_arg_0=1, var_317_arg_1=250, var_317_arg_2=250, var_318=250, var_318_arg_0=0, var_318_arg_1=0, var_318_arg_2=250, var_31_arg_0=255, var_32=0, var_32_arg_0=0, var_32_arg_1=255, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_35=4, var_36=255, var_36_arg_0=255, var_37=0, var_37_arg_0=0, var_37_arg_1=255, var_38=0, var_38_arg_0=0, var_38_arg_1=0, var_38_arg_2=0, var_41=3, var_42=0, var_42_arg_0=0, var_43=1, var_43_arg_0=0, var_43_arg_1=0, var_44=0, var_44_arg_0=1, var_44_arg_1=0, var_44_arg_2=0, var_46=2, var_47=24, var_47_arg_0=24, var_48=0, var_48_arg_0=0, var_48_arg_1=24, var_49=0, var_49_arg_0=0, var_49_arg_1=0, var_49_arg_2=0, var_51=1, var_52=1, var_52_arg_0=1, var_53=0, var_53_arg_0=0, var_53_arg_1=1, var_54=0, var_54_arg_0=0, var_54_arg_1=0, var_54_arg_2=0, var_56=0, var_56_arg_0=0, var_57=0, var_57_arg_0=0, var_58=0, var_58_arg_0=0, var_58_arg_1=0, var_58_arg_2=0, var_61=0, var_61_arg_0=0, var_62=5, var_62_arg_0=0, var_64=9, var_65=255, var_65_arg_0=255, var_66=0, var_66_arg_0=0, var_66_arg_1=255, var_70=10, var_70_arg_0=0, var_71=0, var_71_arg_0=0, var_71_arg_1=10, var_73=0, var_73_arg_0=0, var_74=0, var_74_arg_0=0, var_74_arg_1=0, var_75=0, var_75_arg_0=0, var_76=0, var_76_arg_0=254, var_76_arg_1=0, var_77=0, var_77_arg_0=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79=0, var_79_arg_0=0, var_80=0, var_80_arg_0=0, var_80_arg_1=0, var_81=0, var_82=0, var_82_arg_0=0, var_82_arg_1=0, var_82_arg_2=0, var_83=0, var_83_arg_0=0, var_84=0, var_84_arg_0=0, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=1, var_86_arg_0=0, var_88=1, var_88_arg_0=0, var_88_arg_1=0, var_89=1, var_89_arg_0=1, var_89_arg_1=1, var_93=1, var_93_arg_0=0, var_93_arg_1=0, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=1, var_95_arg_1=255, var_97=0, var_97_arg_0=0, var_98=8, var_98_arg_0=3, var_99=1, var_99_arg_0=0, var_99_arg_1=8] [L149] SORT_1 var_112_arg_0 = state_91; [L150] SORT_1 var_112_arg_1 = var_111; [L151] SORT_1 var_112_arg_2 = var_51; [L152] EXPR var_112_arg_0 ? var_112_arg_1 : var_112_arg_2 [L152] SORT_1 var_112 = var_112_arg_0 ? var_112_arg_1 : var_112_arg_2; [L153] SORT_1 var_70_arg_0 = state_69; [L154] SORT_1 var_70 = ~var_70_arg_0; [L155] SORT_1 var_71_arg_0 = state_68; [L156] SORT_1 var_71_arg_1 = var_70; [L157] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L158] SORT_11 var_73_arg_0 = state_72; [L159] SORT_1 var_73 = var_73_arg_0 != 0; [L160] SORT_1 var_74_arg_0 = var_71; [L161] SORT_1 var_74_arg_1 = var_73; [L162] SORT_1 var_74 = var_74_arg_0 & var_74_arg_1; [L163] SORT_1 var_75_arg_0 = state_68; [L164] SORT_1 var_75 = ~var_75_arg_0; [L165] SORT_1 var_76_arg_0 = input_6; [L166] SORT_1 var_76_arg_1 = var_75; [L167] SORT_1 var_76 = var_76_arg_0 & var_76_arg_1; [L168] SORT_1 var_77_arg_0 = var_76; [L169] var_77_arg_0 = var_77_arg_0 & mask_SORT_1 [L170] SORT_11 var_77 = var_77_arg_0; [L171] SORT_11 var_78_arg_0 = state_72; [L172] SORT_11 var_78_arg_1 = var_77; [L173] SORT_11 var_78 = var_78_arg_0 + var_78_arg_1; [L174] SORT_1 var_79_arg_0 = input_5; [L175] var_79_arg_0 = var_79_arg_0 & mask_SORT_1 [L176] SORT_11 var_79 = var_79_arg_0; [L177] SORT_11 var_80_arg_0 = var_78; [L178] SORT_11 var_80_arg_1 = var_79; [L179] SORT_11 var_80 = var_80_arg_0 - var_80_arg_1; [L180] SORT_1 var_82_arg_0 = input_7; [L181] SORT_11 var_82_arg_1 = var_81; [L182] SORT_11 var_82_arg_2 = var_80; [L183] EXPR var_82_arg_0 ? var_82_arg_1 : var_82_arg_2 [L183] SORT_11 var_82 = var_82_arg_0 ? var_82_arg_1 : var_82_arg_2; [L184] var_82 = var_82 & mask_SORT_11 [L185] SORT_11 var_83_arg_0 = var_82; [L186] SORT_1 var_83 = var_83_arg_0 != 0; [L187] SORT_1 var_84_arg_0 = var_83; [L188] SORT_1 var_84 = ~var_84_arg_0; [L189] SORT_1 var_85_arg_0 = var_74; [L190] SORT_1 var_85_arg_1 = var_84; [L191] SORT_1 var_85 = var_85_arg_0 & var_85_arg_1; [L192] SORT_1 var_86_arg_0 = var_85; [L193] SORT_1 var_86 = ~var_86_arg_0; [L194] SORT_11 var_14_arg_0 = state_12; [L195] SORT_13 var_14 = var_14_arg_0 >> 0; [L196] var_14 = var_14 & mask_SORT_13 [L197] SORT_13 var_56_arg_0 = var_14; [L198] SORT_1 var_56 = var_56_arg_0 != 0; [L199] SORT_1 var_57_arg_0 = var_56; [L200] SORT_1 var_57 = ~var_57_arg_0; [L201] var_57 = var_57 & mask_SORT_1 [L202] SORT_1 var_52_arg_0 = var_51; [L203] var_52_arg_0 = var_52_arg_0 & mask_SORT_1 [L204] SORT_13 var_52 = var_52_arg_0; [L205] SORT_13 var_53_arg_0 = var_14; [L206] SORT_13 var_53_arg_1 = var_52; [L207] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L208] SORT_40 var_47_arg_0 = var_46; [L209] var_47_arg_0 = var_47_arg_0 & mask_SORT_40 [L210] SORT_13 var_47 = var_47_arg_0; [L211] SORT_13 var_48_arg_0 = var_14; [L212] SORT_13 var_48_arg_1 = var_47; [L213] SORT_1 var_48 = var_48_arg_0 == var_48_arg_1; [L214] SORT_40 var_42_arg_0 = var_41; [L215] var_42_arg_0 = var_42_arg_0 & mask_SORT_40 [L216] SORT_13 var_42 = var_42_arg_0; [L217] SORT_13 var_43_arg_0 = var_14; [L218] SORT_13 var_43_arg_1 = var_42; [L219] SORT_1 var_43 = var_43_arg_0 == var_43_arg_1; [L220] SORT_19 var_36_arg_0 = var_35; [L221] var_36_arg_0 = var_36_arg_0 & mask_SORT_19 [L222] SORT_13 var_36 = var_36_arg_0; [L223] SORT_13 var_37_arg_0 = var_14; [L224] SORT_13 var_37_arg_1 = var_36; [L225] SORT_1 var_37 = var_37_arg_0 == var_37_arg_1; [L226] SORT_19 var_31_arg_0 = var_30; [L227] var_31_arg_0 = var_31_arg_0 & mask_SORT_19 [L228] SORT_13 var_31 = var_31_arg_0; [L229] SORT_13 var_32_arg_0 = var_14; [L230] SORT_13 var_32_arg_1 = var_31; [L231] SORT_1 var_32 = var_32_arg_0 == var_32_arg_1; [L232] SORT_19 var_26_arg_0 = var_25; [L233] var_26_arg_0 = var_26_arg_0 & mask_SORT_19 [L234] SORT_13 var_26 = var_26_arg_0; [L235] SORT_13 var_27_arg_0 = var_14; [L236] SORT_13 var_27_arg_1 = var_26; [L237] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L238] SORT_19 var_21_arg_0 = var_20; [L239] var_21_arg_0 = var_21_arg_0 & mask_SORT_19 [L240] SORT_13 var_21 = var_21_arg_0; [L241] SORT_13 var_22_arg_0 = var_14; [L242] SORT_13 var_22_arg_1 = var_21; [L243] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L244] SORT_13 var_16_arg_0 = var_14; [L245] SORT_13 var_16_arg_1 = var_15; [L246] SORT_1 var_16 = var_16_arg_0 == var_16_arg_1; [L247] SORT_1 var_17_arg_0 = var_16; [L248] SORT_3 var_17_arg_1 = state_10; [L249] SORT_3 var_17_arg_2 = input_9; [L250] EXPR var_17_arg_0 ? var_17_arg_1 : var_17_arg_2 [L250] SORT_3 var_17 = var_17_arg_0 ? var_17_arg_1 : var_17_arg_2; [L251] SORT_1 var_23_arg_0 = var_22; [L252] SORT_3 var_23_arg_1 = state_18; [L253] SORT_3 var_23_arg_2 = var_17; [L254] EXPR var_23_arg_0 ? var_23_arg_1 : var_23_arg_2 [L254] SORT_3 var_23 = var_23_arg_0 ? var_23_arg_1 : var_23_arg_2; [L255] SORT_1 var_28_arg_0 = var_27; [L256] SORT_3 var_28_arg_1 = state_24; [L257] SORT_3 var_28_arg_2 = var_23; [L258] EXPR var_28_arg_0 ? var_28_arg_1 : var_28_arg_2 [L258] SORT_3 var_28 = var_28_arg_0 ? var_28_arg_1 : var_28_arg_2; [L259] SORT_1 var_33_arg_0 = var_32; [L260] SORT_3 var_33_arg_1 = state_29; [L261] SORT_3 var_33_arg_2 = var_28; [L262] EXPR var_33_arg_0 ? var_33_arg_1 : var_33_arg_2 [L262] SORT_3 var_33 = var_33_arg_0 ? var_33_arg_1 : var_33_arg_2; [L263] SORT_1 var_38_arg_0 = var_37; [L264] SORT_3 var_38_arg_1 = state_34; [L265] SORT_3 var_38_arg_2 = var_33; [L266] EXPR var_38_arg_0 ? var_38_arg_1 : var_38_arg_2 [L266] SORT_3 var_38 = var_38_arg_0 ? var_38_arg_1 : var_38_arg_2; [L267] SORT_1 var_44_arg_0 = var_43; [L268] SORT_3 var_44_arg_1 = state_39; [L269] SORT_3 var_44_arg_2 = var_38; [L270] EXPR var_44_arg_0 ? var_44_arg_1 : var_44_arg_2 [L270] SORT_3 var_44 = var_44_arg_0 ? var_44_arg_1 : var_44_arg_2; [L271] SORT_1 var_49_arg_0 = var_48; [L272] SORT_3 var_49_arg_1 = state_45; [L273] SORT_3 var_49_arg_2 = var_44; [L274] EXPR var_49_arg_0 ? var_49_arg_1 : var_49_arg_2 [L274] SORT_3 var_49 = var_49_arg_0 ? var_49_arg_1 : var_49_arg_2; [L275] SORT_1 var_54_arg_0 = var_53; [L276] SORT_3 var_54_arg_1 = state_50; [L277] SORT_3 var_54_arg_2 = var_49; [L278] EXPR var_54_arg_0 ? var_54_arg_1 : var_54_arg_2 [L278] SORT_3 var_54 = var_54_arg_0 ? var_54_arg_1 : var_54_arg_2; [L279] SORT_1 var_58_arg_0 = var_57; [L280] SORT_3 var_58_arg_1 = state_55; [L281] SORT_3 var_58_arg_2 = var_54; [L282] EXPR var_58_arg_0 ? var_58_arg_1 : var_58_arg_2 [L282] SORT_3 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L283] var_58 = var_58 & mask_SORT_3 [L284] SORT_3 var_88_arg_0 = state_87; [L285] SORT_3 var_88_arg_1 = var_58; [L286] SORT_1 var_88 = var_88_arg_0 == var_88_arg_1; [L287] SORT_1 var_89_arg_0 = var_86; [L288] SORT_1 var_89_arg_1 = var_88; [L289] SORT_1 var_89 = var_89_arg_0 | var_89_arg_1; [L290] SORT_1 var_110_arg_0 = state_91; [L291] SORT_1 var_110_arg_1 = input_109; [L292] SORT_1 var_110_arg_2 = var_89; [L293] EXPR var_110_arg_0 ? var_110_arg_1 : var_110_arg_2 [L293] SORT_1 var_110 = var_110_arg_0 ? var_110_arg_1 : var_110_arg_2; [L294] SORT_1 var_113_arg_0 = var_110; [L295] SORT_1 var_113 = ~var_113_arg_0; [L296] SORT_1 var_114_arg_0 = var_112; [L297] SORT_1 var_114_arg_1 = var_113; [L298] SORT_1 var_114 = var_114_arg_0 & var_114_arg_1; [L299] var_114 = var_114 & mask_SORT_1 [L300] SORT_1 bad_115_arg_0 = var_114; [L301] CALL __VERIFIER_assert(!(bad_115_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 38.8s, OverallIterations: 2, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 17 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=1, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 19.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 102 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 01:50:40,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI --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 a13b8423c8adb1016504f40821b85ca260e7a8c1efbef1b406f93b0c69b5f932 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:50:43,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:50:43,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:50:43,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:50:43,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:50:43,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:50:43,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:50:43,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:50:43,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:50:43,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:50:43,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:50:43,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:50:43,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:50:43,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:50:43,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:50:43,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:50:43,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:50:43,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:50:43,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:50:43,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:50:43,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:50:43,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:50:43,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:50:43,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:50:43,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:50:43,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:50:43,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:50:43,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:50:43,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:50:43,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:50:43,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:50:43,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:50:43,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:50:43,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:50:43,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:50:43,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:50:43,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:50:43,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:50:43,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:50:43,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:50:43,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:50:43,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 01:50:43,605 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:50:43,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:50:43,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:50:43,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:50:43,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:50:43,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:50:43,608 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:50:43,608 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:50:43,608 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:50:43,609 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:50:43,609 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:50:43,609 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:50:43,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:50:43,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:50:43,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:50:43,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:50:43,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:50:43,612 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 01:50:43,612 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 01:50:43,612 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 01:50:43,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:50:43,613 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:50:43,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:50:43,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:50:43,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 01:50:43,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:50:43,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:50:43,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:50:43,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:50:43,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:50:43,616 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 01:50:43,616 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 01:50:43,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:50:43,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:50:43,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 01:50:43,617 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_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a13b8423c8adb1016504f40821b85ca260e7a8c1efbef1b406f93b0c69b5f932 [2022-11-03 01:50:44,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:50:44,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:50:44,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:50:44,144 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:50:44,145 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:50:44,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c [2022-11-03 01:50:44,232 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/data/846c0a73b/202a87189ac74434bd5d6fa3bb26d236/FLAG1dd2ef833 [2022-11-03 01:50:44,842 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:50:44,843 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c [2022-11-03 01:50:44,867 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/data/846c0a73b/202a87189ac74434bd5d6fa3bb26d236/FLAG1dd2ef833 [2022-11-03 01:50:45,156 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/data/846c0a73b/202a87189ac74434bd5d6fa3bb26d236 [2022-11-03 01:50:45,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:50:45,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:50:45,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:50:45,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:50:45,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:50:45,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:50:45" (1/1) ... [2022-11-03 01:50:45,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6344ba42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:45, skipping insertion in model container [2022-11-03 01:50:45,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:50:45" (1/1) ... [2022-11-03 01:50:45,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:50:45,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:50:45,469 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c[1116,1129] [2022-11-03 01:50:45,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:50:45,753 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:50:45,763 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c[1116,1129] [2022-11-03 01:50:45,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:50:45,875 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:50:45,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:45 WrapperNode [2022-11-03 01:50:45,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:50:45,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:50:45,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:50:45,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:50:45,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:45" (1/1) ... [2022-11-03 01:50:45,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:45" (1/1) ... [2022-11-03 01:50:45,964 INFO L138 Inliner]: procedures = 11, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 780 [2022-11-03 01:50:45,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:50:45,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:50:45,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:50:45,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:50:45,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:45" (1/1) ... [2022-11-03 01:50:45,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:45" (1/1) ... [2022-11-03 01:50:45,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:45" (1/1) ... [2022-11-03 01:50:45,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:45" (1/1) ... [2022-11-03 01:50:46,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:45" (1/1) ... [2022-11-03 01:50:46,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:45" (1/1) ... [2022-11-03 01:50:46,018 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:45" (1/1) ... [2022-11-03 01:50:46,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:45" (1/1) ... [2022-11-03 01:50:46,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:50:46,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:50:46,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:50:46,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:50:46,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:45" (1/1) ... [2022-11-03 01:50:46,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:50:46,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:50:46,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:50:46,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:50:46,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:50:46,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:50:46,175 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:50:46,175 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:50:46,435 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:50:46,437 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:50:47,294 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:50:47,303 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:50:47,303 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:50:47,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:50:47 BoogieIcfgContainer [2022-11-03 01:50:47,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:50:47,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:50:47,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:50:47,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:50:47,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:50:45" (1/3) ... [2022-11-03 01:50:47,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6038b111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:50:47, skipping insertion in model container [2022-11-03 01:50:47,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:50:45" (2/3) ... [2022-11-03 01:50:47,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6038b111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:50:47, skipping insertion in model container [2022-11-03 01:50:47,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:50:47" (3/3) ... [2022-11-03 01:50:47,317 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w8_d8_e0.c [2022-11-03 01:50:47,339 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:50:47,340 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:50:47,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:50:47,409 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@422dae0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:50:47,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:50:47,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 101 states have (on average 1.4752475247524752) internal successors, (149), 102 states have internal predecessors, (149), 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) [2022-11-03 01:50:47,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:50:47,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:47,425 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:47,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:47,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:47,432 INFO L85 PathProgramCache]: Analyzing trace with hash 13956030, now seen corresponding path program 1 times [2022-11-03 01:50:47,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:47,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037486218] [2022-11-03 01:50:47,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:47,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:47,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:47,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:47,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 01:50:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:47,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 01:50:47,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:48,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 01:50:48,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:48,013 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:48,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037486218] [2022-11-03 01:50:48,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037486218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:48,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:48,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:50:48,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215594527] [2022-11-03 01:50:48,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:48,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:50:48,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:48,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:50:48,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:50:48,072 INFO L87 Difference]: Start difference. First operand has 107 states, 101 states have (on average 1.4752475247524752) internal successors, (149), 102 states have internal predecessors, (149), 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 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:50:48,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:48,102 INFO L93 Difference]: Finished difference Result 208 states and 308 transitions. [2022-11-03 01:50:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:50:48,104 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2022-11-03 01:50:48,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:48,111 INFO L225 Difference]: With dead ends: 208 [2022-11-03 01:50:48,112 INFO L226 Difference]: Without dead ends: 103 [2022-11-03 01:50:48,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:50:48,118 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:48,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:50:48,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-03 01:50:48,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-11-03 01:50:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.4489795918367347) internal successors, (142), 98 states have internal predecessors, (142), 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) [2022-11-03 01:50:48,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 148 transitions. [2022-11-03 01:50:48,183 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 148 transitions. Word has length 47 [2022-11-03 01:50:48,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:48,184 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 148 transitions. [2022-11-03 01:50:48,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 01:50:48,184 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 148 transitions. [2022-11-03 01:50:48,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:50:48,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:48,187 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:48,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 01:50:48,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:50:48,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:48,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash -109632008, now seen corresponding path program 1 times [2022-11-03 01:50:48,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:48,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79545602] [2022-11-03 01:50:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:48,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:48,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:48,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:48,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 01:50:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:48,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 01:50:48,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:50:49,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:49,072 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:49,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79545602] [2022-11-03 01:50:49,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79545602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:49,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:49,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:50:49,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218330181] [2022-11-03 01:50:49,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:49,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:50:49,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:49,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:50:49,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:50:49,076 INFO L87 Difference]: Start difference. First operand 103 states and 148 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:49,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:49,385 INFO L93 Difference]: Finished difference Result 408 states and 593 transitions. [2022-11-03 01:50:49,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:50:49,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 01:50:49,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:49,389 INFO L225 Difference]: With dead ends: 408 [2022-11-03 01:50:49,389 INFO L226 Difference]: Without dead ends: 307 [2022-11-03 01:50:49,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:50:49,391 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 922 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:49,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 617 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:50:49,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-03 01:50:49,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 105. [2022-11-03 01:50:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.44) internal successors, (144), 100 states have internal predecessors, (144), 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) [2022-11-03 01:50:49,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 150 transitions. [2022-11-03 01:50:49,409 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 150 transitions. Word has length 47 [2022-11-03 01:50:49,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:49,409 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 150 transitions. [2022-11-03 01:50:49,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:49,410 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 150 transitions. [2022-11-03 01:50:49,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:50:49,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:49,411 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:49,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:49,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:50:49,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash -927280458, now seen corresponding path program 1 times [2022-11-03 01:50:49,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:49,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272651733] [2022-11-03 01:50:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:49,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:49,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:49,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:49,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 01:50:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:49,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 01:50:49,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:50:50,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:50,063 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:50,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272651733] [2022-11-03 01:50:50,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272651733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:50,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:50,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:50:50,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461092416] [2022-11-03 01:50:50,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:50,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:50:50,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:50,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:50:50,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:50:50,067 INFO L87 Difference]: Start difference. First operand 105 states and 150 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:50,367 INFO L93 Difference]: Finished difference Result 414 states and 599 transitions. [2022-11-03 01:50:50,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:50:50,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 01:50:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:50,372 INFO L225 Difference]: With dead ends: 414 [2022-11-03 01:50:50,372 INFO L226 Difference]: Without dead ends: 311 [2022-11-03 01:50:50,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:50:50,380 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 911 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:50,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 635 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:50:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-03 01:50:50,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 109. [2022-11-03 01:50:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.4326923076923077) internal successors, (149), 104 states have internal predecessors, (149), 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) [2022-11-03 01:50:50,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 155 transitions. [2022-11-03 01:50:50,413 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 155 transitions. Word has length 47 [2022-11-03 01:50:50,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:50,415 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 155 transitions. [2022-11-03 01:50:50,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 155 transitions. [2022-11-03 01:50:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:50:50,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:50,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:50,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:50,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:50:50,639 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:50,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:50,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1948348812, now seen corresponding path program 1 times [2022-11-03 01:50:50,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:50,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040079711] [2022-11-03 01:50:50,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:50,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:50,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:50,652 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:50,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 01:50:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:50,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 01:50:50,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:50:51,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:51,106 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:51,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040079711] [2022-11-03 01:50:51,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040079711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:51,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:51,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:50:51,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812503518] [2022-11-03 01:50:51,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:51,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:50:51,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:51,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:50:51,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:50:51,114 INFO L87 Difference]: Start difference. First operand 109 states and 155 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:51,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:51,389 INFO L93 Difference]: Finished difference Result 420 states and 605 transitions. [2022-11-03 01:50:51,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:50:51,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 01:50:51,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:51,392 INFO L225 Difference]: With dead ends: 420 [2022-11-03 01:50:51,392 INFO L226 Difference]: Without dead ends: 313 [2022-11-03 01:50:51,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:50:51,402 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 907 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:51,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 627 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:50:51,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-03 01:50:51,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 111. [2022-11-03 01:50:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.4245283018867925) internal successors, (151), 106 states have internal predecessors, (151), 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) [2022-11-03 01:50:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 157 transitions. [2022-11-03 01:50:51,435 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 157 transitions. Word has length 47 [2022-11-03 01:50:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:51,437 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 157 transitions. [2022-11-03 01:50:51,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:51,438 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 157 transitions. [2022-11-03 01:50:51,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:50:51,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:51,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:51,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:51,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:50:51,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:51,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:51,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1335501234, now seen corresponding path program 1 times [2022-11-03 01:50:51,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:51,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050230229] [2022-11-03 01:50:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:51,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:51,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:51,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:51,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 01:50:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:51,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 01:50:51,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:50:52,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:52,065 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:52,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050230229] [2022-11-03 01:50:52,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050230229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:52,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:52,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:50:52,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713849303] [2022-11-03 01:50:52,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:52,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:50:52,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:52,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:50:52,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:50:52,068 INFO L87 Difference]: Start difference. First operand 111 states and 157 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:52,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:52,331 INFO L93 Difference]: Finished difference Result 424 states and 608 transitions. [2022-11-03 01:50:52,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:50:52,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 01:50:52,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:52,334 INFO L225 Difference]: With dead ends: 424 [2022-11-03 01:50:52,334 INFO L226 Difference]: Without dead ends: 315 [2022-11-03 01:50:52,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:50:52,335 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 893 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:52,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 648 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:50:52,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-03 01:50:52,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 113. [2022-11-03 01:50:52,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.4166666666666667) internal successors, (153), 108 states have internal predecessors, (153), 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) [2022-11-03 01:50:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 159 transitions. [2022-11-03 01:50:52,349 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 159 transitions. Word has length 47 [2022-11-03 01:50:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:52,350 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 159 transitions. [2022-11-03 01:50:52,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:52,350 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 159 transitions. [2022-11-03 01:50:52,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:50:52,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:52,351 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:52,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:52,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:50:52,572 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:52,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:52,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1593666672, now seen corresponding path program 1 times [2022-11-03 01:50:52,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:52,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355828843] [2022-11-03 01:50:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:52,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:52,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:52,574 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:52,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 01:50:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:52,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 01:50:52,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:50:53,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:53,021 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:53,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355828843] [2022-11-03 01:50:53,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355828843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:53,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:53,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:50:53,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832068045] [2022-11-03 01:50:53,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:53,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:50:53,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:53,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:50:53,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:50:53,025 INFO L87 Difference]: Start difference. First operand 113 states and 159 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:53,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:53,302 INFO L93 Difference]: Finished difference Result 428 states and 611 transitions. [2022-11-03 01:50:53,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:50:53,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 01:50:53,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:53,305 INFO L225 Difference]: With dead ends: 428 [2022-11-03 01:50:53,305 INFO L226 Difference]: Without dead ends: 317 [2022-11-03 01:50:53,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:50:53,307 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 881 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:53,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 663 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:50:53,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-03 01:50:53,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 115. [2022-11-03 01:50:53,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.4090909090909092) internal successors, (155), 110 states have internal predecessors, (155), 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) [2022-11-03 01:50:53,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 161 transitions. [2022-11-03 01:50:53,320 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 161 transitions. Word has length 47 [2022-11-03 01:50:53,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:53,321 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 161 transitions. [2022-11-03 01:50:53,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:53,321 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 161 transitions. [2022-11-03 01:50:53,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:50:53,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:53,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:53,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:53,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:50:53,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:53,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:53,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1200639662, now seen corresponding path program 1 times [2022-11-03 01:50:53,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:53,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448746569] [2022-11-03 01:50:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:53,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:53,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:53,540 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:53,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 01:50:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:53,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 01:50:53,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:50:53,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:53,949 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:53,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448746569] [2022-11-03 01:50:53,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448746569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:53,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:53,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:50:53,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38642207] [2022-11-03 01:50:53,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:53,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:50:53,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:53,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:50:53,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:50:53,952 INFO L87 Difference]: Start difference. First operand 115 states and 161 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:54,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:54,384 INFO L93 Difference]: Finished difference Result 432 states and 614 transitions. [2022-11-03 01:50:54,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:50:54,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 01:50:54,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:54,386 INFO L225 Difference]: With dead ends: 432 [2022-11-03 01:50:54,386 INFO L226 Difference]: Without dead ends: 319 [2022-11-03 01:50:54,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:50:54,388 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 895 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:54,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 560 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:50:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-03 01:50:54,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 117. [2022-11-03 01:50:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.4017857142857142) internal successors, (157), 112 states have internal predecessors, (157), 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) [2022-11-03 01:50:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 163 transitions. [2022-11-03 01:50:54,401 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 163 transitions. Word has length 47 [2022-11-03 01:50:54,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:54,402 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 163 transitions. [2022-11-03 01:50:54,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:54,402 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 163 transitions. [2022-11-03 01:50:54,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:50:54,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:54,403 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:54,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:54,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:50:54,626 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:54,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:54,627 INFO L85 PathProgramCache]: Analyzing trace with hash 391293036, now seen corresponding path program 1 times [2022-11-03 01:50:54,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:54,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23583952] [2022-11-03 01:50:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:54,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:54,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:54,630 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:54,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 01:50:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:54,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:50:54,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:50:55,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:55,060 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:55,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23583952] [2022-11-03 01:50:55,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23583952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:55,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:55,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:50:55,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103498287] [2022-11-03 01:50:55,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:55,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:50:55,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:55,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:50:55,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:50:55,063 INFO L87 Difference]: Start difference. First operand 117 states and 163 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:55,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:55,555 INFO L93 Difference]: Finished difference Result 436 states and 617 transitions. [2022-11-03 01:50:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:50:55,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 01:50:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:55,557 INFO L225 Difference]: With dead ends: 436 [2022-11-03 01:50:55,557 INFO L226 Difference]: Without dead ends: 321 [2022-11-03 01:50:55,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:50:55,559 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 874 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:55,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 583 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:50:55,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-03 01:50:55,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 119. [2022-11-03 01:50:55,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.394736842105263) internal successors, (159), 114 states have internal predecessors, (159), 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) [2022-11-03 01:50:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2022-11-03 01:50:55,574 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 47 [2022-11-03 01:50:55,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:55,575 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2022-11-03 01:50:55,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:55,575 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2022-11-03 01:50:55,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:50:55,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:55,576 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:55,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:55,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:50:55,793 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:55,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:55,793 INFO L85 PathProgramCache]: Analyzing trace with hash 448551338, now seen corresponding path program 1 times [2022-11-03 01:50:55,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:55,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631346667] [2022-11-03 01:50:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:55,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:55,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:55,795 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:55,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 01:50:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:56,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:50:56,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:50:56,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:56,258 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:56,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631346667] [2022-11-03 01:50:56,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631346667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:56,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:56,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:50:56,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301394843] [2022-11-03 01:50:56,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:56,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:50:56,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:56,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:50:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:50:56,261 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:56,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:56,689 INFO L93 Difference]: Finished difference Result 317 states and 437 transitions. [2022-11-03 01:50:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:50:56,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 01:50:56,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:56,692 INFO L225 Difference]: With dead ends: 317 [2022-11-03 01:50:56,692 INFO L226 Difference]: Without dead ends: 315 [2022-11-03 01:50:56,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:50:56,693 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 805 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:56,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 614 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:50:56,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-03 01:50:56,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 159. [2022-11-03 01:50:56,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 154 states have (on average 1.37012987012987) internal successors, (211), 154 states have internal predecessors, (211), 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) [2022-11-03 01:50:56,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 217 transitions. [2022-11-03 01:50:56,714 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 217 transitions. Word has length 47 [2022-11-03 01:50:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:56,715 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 217 transitions. [2022-11-03 01:50:56,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:56,715 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 217 transitions. [2022-11-03 01:50:56,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:50:56,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:56,721 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:56,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:56,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:50:56,934 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:56,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:56,934 INFO L85 PathProgramCache]: Analyzing trace with hash 510590952, now seen corresponding path program 1 times [2022-11-03 01:50:56,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:56,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191016494] [2022-11-03 01:50:56,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:56,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:56,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:56,936 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:56,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 01:50:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:57,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:50:57,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:50:57,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:57,191 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:57,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191016494] [2022-11-03 01:50:57,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191016494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:57,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:57,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:50:57,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719685830] [2022-11-03 01:50:57,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:57,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:50:57,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:57,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:50:57,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:50:57,197 INFO L87 Difference]: Start difference. First operand 159 states and 217 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:57,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:57,260 INFO L93 Difference]: Finished difference Result 434 states and 600 transitions. [2022-11-03 01:50:57,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:50:57,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 01:50:57,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:57,262 INFO L225 Difference]: With dead ends: 434 [2022-11-03 01:50:57,263 INFO L226 Difference]: Without dead ends: 277 [2022-11-03 01:50:57,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:50:57,264 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 263 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:57,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 455 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:50:57,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-03 01:50:57,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 167. [2022-11-03 01:50:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 159 states have (on average 1.3584905660377358) internal successors, (216), 159 states have internal predecessors, (216), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:50:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 228 transitions. [2022-11-03 01:50:57,305 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 228 transitions. Word has length 47 [2022-11-03 01:50:57,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:57,305 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 228 transitions. [2022-11-03 01:50:57,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 01:50:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 228 transitions. [2022-11-03 01:50:57,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:50:57,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:57,308 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:57,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:57,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:50:57,522 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:57,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:57,522 INFO L85 PathProgramCache]: Analyzing trace with hash -340023667, now seen corresponding path program 1 times [2022-11-03 01:50:57,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:57,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163031438] [2022-11-03 01:50:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:57,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:57,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:57,524 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:57,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 01:50:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:57,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:50:57,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:50:58,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:50:58,478 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:58,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163031438] [2022-11-03 01:50:58,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163031438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:50:58,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1330850256] [2022-11-03 01:50:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:58,479 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:50:58,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:50:58,484 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:50:58,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-03 01:50:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:59,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:50:59,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:50:59,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:59,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1330850256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:59,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:50:59,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-03 01:50:59,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363252521] [2022-11-03 01:50:59,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:59,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:50:59,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:59,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:50:59,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:50:59,245 INFO L87 Difference]: Start difference. First operand 167 states and 228 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:50:59,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:59,469 INFO L93 Difference]: Finished difference Result 719 states and 982 transitions. [2022-11-03 01:50:59,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:50:59,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:50:59,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:59,474 INFO L225 Difference]: With dead ends: 719 [2022-11-03 01:50:59,474 INFO L226 Difference]: Without dead ends: 562 [2022-11-03 01:50:59,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:50:59,476 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 601 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:59,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 600 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:50:59,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-11-03 01:50:59,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 267. [2022-11-03 01:50:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 259 states have (on average 1.3513513513513513) internal successors, (350), 259 states have internal predecessors, (350), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:50:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 362 transitions. [2022-11-03 01:50:59,504 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 362 transitions. Word has length 154 [2022-11-03 01:50:59,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:59,505 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 362 transitions. [2022-11-03 01:50:59,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:50:59,505 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 362 transitions. [2022-11-03 01:50:59,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:50:59,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:59,510 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:59,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2022-11-03 01:50:59,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:59,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:50:59,915 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:59,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:59,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2078460811, now seen corresponding path program 1 times [2022-11-03 01:50:59,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:59,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720823911] [2022-11-03 01:50:59,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:59,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:59,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:59,917 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:59,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 01:51:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:00,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:51:00,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:51:00,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:00,852 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:00,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720823911] [2022-11-03 01:51:00,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720823911] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:00,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [949658733] [2022-11-03 01:51:00,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:00,853 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:00,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:00,857 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:00,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-03 01:51:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:01,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:01,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:01,611 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:01,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:01,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [949658733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:01,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:51:01,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-03 01:51:01,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348580355] [2022-11-03 01:51:01,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:01,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:01,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:01,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:01,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:51:01,615 INFO L87 Difference]: Start difference. First operand 267 states and 362 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:01,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:01,782 INFO L93 Difference]: Finished difference Result 1186 states and 1617 transitions. [2022-11-03 01:51:01,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:51:01,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:01,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:01,787 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 01:51:01,787 INFO L226 Difference]: Without dead ends: 929 [2022-11-03 01:51:01,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:51:01,789 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 568 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:01,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 919 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:01,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-11-03 01:51:01,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 339. [2022-11-03 01:51:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 331 states have (on average 1.3776435045317221) internal successors, (456), 331 states have internal predecessors, (456), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:51:01,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 468 transitions. [2022-11-03 01:51:01,820 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 468 transitions. Word has length 154 [2022-11-03 01:51:01,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:01,821 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 468 transitions. [2022-11-03 01:51:01,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 468 transitions. [2022-11-03 01:51:01,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:01,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:01,824 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:01,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:02,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:02,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:02,229 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:02,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:02,229 INFO L85 PathProgramCache]: Analyzing trace with hash 2062942093, now seen corresponding path program 1 times [2022-11-03 01:51:02,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:02,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589035714] [2022-11-03 01:51:02,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:02,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:02,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:02,232 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:02,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 01:51:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:02,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:51:02,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:51:02,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:03,090 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:03,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589035714] [2022-11-03 01:51:03,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589035714] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:03,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1452580898] [2022-11-03 01:51:03,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:03,091 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:03,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:03,092 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:03,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-03 01:51:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:03,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:51:03,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:03,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:04,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1452580898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:04,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105356834] [2022-11-03 01:51:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:04,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:04,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:04,257 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:51:04,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-03 01:51:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:04,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:51:04,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:04,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:05,186 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:05,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105356834] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:05,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-03 01:51:05,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6, 6, 6] total 12 [2022-11-03 01:51:05,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385015225] [2022-11-03 01:51:05,188 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-03 01:51:05,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:51:05,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:05,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:51:05,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:51:05,191 INFO L87 Difference]: Start difference. First operand 339 states and 468 transitions. Second operand has 12 states, 11 states have (on average 23.0) internal successors, (253), 12 states have internal predecessors, (253), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-03 01:51:06,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:06,113 INFO L93 Difference]: Finished difference Result 1023 states and 1401 transitions. [2022-11-03 01:51:06,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:51:06,114 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 23.0) internal successors, (253), 12 states have internal predecessors, (253), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 154 [2022-11-03 01:51:06,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:06,117 INFO L225 Difference]: With dead ends: 1023 [2022-11-03 01:51:06,117 INFO L226 Difference]: Without dead ends: 694 [2022-11-03 01:51:06,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-11-03 01:51:06,118 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 263 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:06,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 2591 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 408 Invalid, 0 Unknown, 30 Unchecked, 0.6s Time] [2022-11-03 01:51:06,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-11-03 01:51:06,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 429. [2022-11-03 01:51:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 421 states have (on average 1.3610451306413303) internal successors, (573), 421 states have internal predecessors, (573), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:51:06,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 585 transitions. [2022-11-03 01:51:06,142 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 585 transitions. Word has length 154 [2022-11-03 01:51:06,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:06,142 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 585 transitions. [2022-11-03 01:51:06,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 23.0) internal successors, (253), 12 states have internal predecessors, (253), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-03 01:51:06,143 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 585 transitions. [2022-11-03 01:51:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:06,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:06,145 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:06,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:06,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2022-11-03 01:51:06,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:06,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:06,760 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:06,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:06,761 INFO L85 PathProgramCache]: Analyzing trace with hash -183112439, now seen corresponding path program 1 times [2022-11-03 01:51:06,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:06,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20241526] [2022-11-03 01:51:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:06,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:06,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:06,763 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:06,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 01:51:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:07,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 01:51:07,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:07,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:07,506 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:07,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20241526] [2022-11-03 01:51:07,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20241526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:07,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:07,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:51:07,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117273089] [2022-11-03 01:51:07,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:07,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:51:07,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:07,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:51:07,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:51:07,509 INFO L87 Difference]: Start difference. First operand 429 states and 585 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:07,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:07,826 INFO L93 Difference]: Finished difference Result 1330 states and 1824 transitions. [2022-11-03 01:51:07,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:07,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:07,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:07,831 INFO L225 Difference]: With dead ends: 1330 [2022-11-03 01:51:07,831 INFO L226 Difference]: Without dead ends: 1001 [2022-11-03 01:51:07,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:51:07,833 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 353 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:07,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 998 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 123 Invalid, 0 Unknown, 51 Unchecked, 0.2s Time] [2022-11-03 01:51:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2022-11-03 01:51:07,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 445. [2022-11-03 01:51:07,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 437 states have (on average 1.356979405034325) internal successors, (593), 437 states have internal predecessors, (593), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:51:07,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 605 transitions. [2022-11-03 01:51:07,865 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 605 transitions. Word has length 154 [2022-11-03 01:51:07,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:07,865 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 605 transitions. [2022-11-03 01:51:07,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:07,866 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 605 transitions. [2022-11-03 01:51:07,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:07,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:07,869 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:07,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:08,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:08,086 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:08,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:08,087 INFO L85 PathProgramCache]: Analyzing trace with hash 847928459, now seen corresponding path program 1 times [2022-11-03 01:51:08,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:08,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304072558] [2022-11-03 01:51:08,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:08,088 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:08,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:08,090 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:08,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 01:51:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:08,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 01:51:08,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:08,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:08,971 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:08,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304072558] [2022-11-03 01:51:08,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304072558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:08,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:08,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:51:08,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100098896] [2022-11-03 01:51:08,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:08,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:51:08,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:08,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:51:08,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:51:08,974 INFO L87 Difference]: Start difference. First operand 445 states and 605 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:09,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:09,278 INFO L93 Difference]: Finished difference Result 1330 states and 1822 transitions. [2022-11-03 01:51:09,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:09,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:09,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:09,283 INFO L225 Difference]: With dead ends: 1330 [2022-11-03 01:51:09,283 INFO L226 Difference]: Without dead ends: 1001 [2022-11-03 01:51:09,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:51:09,287 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 384 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:09,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 885 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 63 Unchecked, 0.2s Time] [2022-11-03 01:51:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2022-11-03 01:51:09,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 453. [2022-11-03 01:51:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 445 states have (on average 1.355056179775281) internal successors, (603), 445 states have internal predecessors, (603), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:51:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 615 transitions. [2022-11-03 01:51:09,325 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 615 transitions. Word has length 154 [2022-11-03 01:51:09,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:09,328 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 615 transitions. [2022-11-03 01:51:09,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:09,328 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 615 transitions. [2022-11-03 01:51:09,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:09,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:09,334 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:09,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:09,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:09,550 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:09,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:09,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2095653619, now seen corresponding path program 1 times [2022-11-03 01:51:09,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:09,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421944876] [2022-11-03 01:51:09,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:09,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:09,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:09,554 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:09,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 01:51:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:09,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 01:51:09,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:10,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:10,372 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:10,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421944876] [2022-11-03 01:51:10,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421944876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:10,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:10,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:51:10,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122016261] [2022-11-03 01:51:10,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:10,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:51:10,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:10,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:51:10,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:51:10,375 INFO L87 Difference]: Start difference. First operand 453 states and 615 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:10,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:10,693 INFO L93 Difference]: Finished difference Result 1278 states and 1744 transitions. [2022-11-03 01:51:10,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:10,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:10,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:10,697 INFO L225 Difference]: With dead ends: 1278 [2022-11-03 01:51:10,697 INFO L226 Difference]: Without dead ends: 949 [2022-11-03 01:51:10,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:51:10,699 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 308 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:10,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 995 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 122 Invalid, 0 Unknown, 52 Unchecked, 0.2s Time] [2022-11-03 01:51:10,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-11-03 01:51:10,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 461. [2022-11-03 01:51:10,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 453 states have (on average 1.3532008830022075) internal successors, (613), 453 states have internal predecessors, (613), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:51:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 625 transitions. [2022-11-03 01:51:10,726 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 625 transitions. Word has length 154 [2022-11-03 01:51:10,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:10,726 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 625 transitions. [2022-11-03 01:51:10,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:10,727 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 625 transitions. [2022-11-03 01:51:10,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:10,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:10,729 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:10,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:10,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:10,954 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:10,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:10,954 INFO L85 PathProgramCache]: Analyzing trace with hash 258731663, now seen corresponding path program 1 times [2022-11-03 01:51:10,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:10,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448227673] [2022-11-03 01:51:10,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:10,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:10,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:10,957 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:10,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 01:51:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:11,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 01:51:11,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:11,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:11,845 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:11,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448227673] [2022-11-03 01:51:11,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448227673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:11,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:11,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:51:11,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047981840] [2022-11-03 01:51:11,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:11,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:51:11,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:51:11,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:51:11,848 INFO L87 Difference]: Start difference. First operand 461 states and 625 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:12,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:12,128 INFO L93 Difference]: Finished difference Result 1262 states and 1718 transitions. [2022-11-03 01:51:12,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:12,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:12,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:12,133 INFO L225 Difference]: With dead ends: 1262 [2022-11-03 01:51:12,133 INFO L226 Difference]: Without dead ends: 933 [2022-11-03 01:51:12,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:51:12,135 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 331 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:12,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 873 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 115 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-03 01:51:12,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-11-03 01:51:12,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 469. [2022-11-03 01:51:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 461 states have (on average 1.351409978308026) internal successors, (623), 461 states have internal predecessors, (623), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:51:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 635 transitions. [2022-11-03 01:51:12,175 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 635 transitions. Word has length 154 [2022-11-03 01:51:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:12,175 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 635 transitions. [2022-11-03 01:51:12,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:12,176 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 635 transitions. [2022-11-03 01:51:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:12,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:12,179 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:12,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:12,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:12,397 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:12,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:12,397 INFO L85 PathProgramCache]: Analyzing trace with hash -327544559, now seen corresponding path program 1 times [2022-11-03 01:51:12,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:12,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853526701] [2022-11-03 01:51:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:12,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:12,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:12,400 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:12,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 01:51:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:12,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 01:51:12,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:13,269 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:13,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:13,270 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:13,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853526701] [2022-11-03 01:51:13,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853526701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:13,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:13,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:51:13,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567026180] [2022-11-03 01:51:13,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:13,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:51:13,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:13,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:51:13,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:51:13,273 INFO L87 Difference]: Start difference. First operand 469 states and 635 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:13,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:13,618 INFO L93 Difference]: Finished difference Result 1332 states and 1820 transitions. [2022-11-03 01:51:13,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:13,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:13,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:13,622 INFO L225 Difference]: With dead ends: 1332 [2022-11-03 01:51:13,622 INFO L226 Difference]: Without dead ends: 1003 [2022-11-03 01:51:13,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:51:13,624 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 310 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:13,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1052 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 129 Invalid, 0 Unknown, 61 Unchecked, 0.2s Time] [2022-11-03 01:51:13,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2022-11-03 01:51:13,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 475. [2022-11-03 01:51:13,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 467 states have (on average 1.3490364025695931) internal successors, (630), 467 states have internal predecessors, (630), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:51:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 642 transitions. [2022-11-03 01:51:13,656 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 642 transitions. Word has length 154 [2022-11-03 01:51:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:13,657 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 642 transitions. [2022-11-03 01:51:13,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 642 transitions. [2022-11-03 01:51:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:13,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:13,661 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:13,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:13,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:13,876 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:13,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:13,877 INFO L85 PathProgramCache]: Analyzing trace with hash 997311635, now seen corresponding path program 1 times [2022-11-03 01:51:13,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:13,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298730485] [2022-11-03 01:51:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:13,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:13,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:13,879 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:13,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 01:51:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:14,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 01:51:14,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:14,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:14,748 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:14,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298730485] [2022-11-03 01:51:14,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298730485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:14,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:14,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:51:14,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798432060] [2022-11-03 01:51:14,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:14,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:51:14,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:14,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:51:14,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:51:14,757 INFO L87 Difference]: Start difference. First operand 475 states and 642 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:15,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:15,063 INFO L93 Difference]: Finished difference Result 1332 states and 1819 transitions. [2022-11-03 01:51:15,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:15,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:15,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:15,067 INFO L225 Difference]: With dead ends: 1332 [2022-11-03 01:51:15,067 INFO L226 Difference]: Without dead ends: 1003 [2022-11-03 01:51:15,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:51:15,069 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 338 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:15,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 961 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 126 Invalid, 0 Unknown, 66 Unchecked, 0.2s Time] [2022-11-03 01:51:15,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2022-11-03 01:51:15,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 479. [2022-11-03 01:51:15,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 471 states have (on average 1.3481953290870488) internal successors, (635), 471 states have internal predecessors, (635), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:51:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 647 transitions. [2022-11-03 01:51:15,101 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 647 transitions. Word has length 154 [2022-11-03 01:51:15,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:15,102 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 647 transitions. [2022-11-03 01:51:15,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:15,102 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 647 transitions. [2022-11-03 01:51:15,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:15,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:15,105 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:15,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-03 01:51:15,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:15,321 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:15,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:15,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1237551381, now seen corresponding path program 1 times [2022-11-03 01:51:15,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:15,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437250286] [2022-11-03 01:51:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:15,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:15,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:15,323 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:15,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 01:51:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:15,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:51:15,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:15,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:15,979 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:15,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437250286] [2022-11-03 01:51:15,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437250286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:15,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:15,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:51:15,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561477905] [2022-11-03 01:51:15,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:15,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:51:15,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:15,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:51:15,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:51:15,981 INFO L87 Difference]: Start difference. First operand 479 states and 647 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:16,236 INFO L93 Difference]: Finished difference Result 1234 states and 1674 transitions. [2022-11-03 01:51:16,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:16,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:16,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:16,241 INFO L225 Difference]: With dead ends: 1234 [2022-11-03 01:51:16,241 INFO L226 Difference]: Without dead ends: 905 [2022-11-03 01:51:16,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:51:16,243 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 241 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:16,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 965 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 120 Invalid, 0 Unknown, 66 Unchecked, 0.2s Time] [2022-11-03 01:51:16,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-11-03 01:51:16,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 483. [2022-11-03 01:51:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 475 states have (on average 1.3473684210526315) internal successors, (640), 475 states have internal predecessors, (640), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:51:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 652 transitions. [2022-11-03 01:51:16,277 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 652 transitions. Word has length 154 [2022-11-03 01:51:16,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:16,277 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 652 transitions. [2022-11-03 01:51:16,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 652 transitions. [2022-11-03 01:51:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:16,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:16,280 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:16,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:16,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:16,497 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:16,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:16,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1323311465, now seen corresponding path program 1 times [2022-11-03 01:51:16,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:16,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677933315] [2022-11-03 01:51:16,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:16,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:16,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:16,499 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:16,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 01:51:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:16,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:51:16,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-03 01:51:17,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:19,439 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:19,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677933315] [2022-11-03 01:51:19,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677933315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:19,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1722958432] [2022-11-03 01:51:19,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:19,439 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:19,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:19,441 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:19,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-03 01:51:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:20,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:51:20,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:20,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:20,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1722958432] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:20,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326177040] [2022-11-03 01:51:20,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:20,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:20,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:20,577 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:51:20,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-03 01:51:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:20,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:51:20,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:21,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:21,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326177040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:21,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-03 01:51:21,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6, 6, 6] total 14 [2022-11-03 01:51:21,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057540353] [2022-11-03 01:51:21,390 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-03 01:51:21,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 01:51:21,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:21,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 01:51:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:51:21,392 INFO L87 Difference]: Start difference. First operand 483 states and 652 transitions. Second operand has 14 states, 13 states have (on average 19.23076923076923) internal successors, (250), 14 states have internal predecessors, (250), 5 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-03 01:51:23,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:23,036 INFO L93 Difference]: Finished difference Result 1019 states and 1406 transitions. [2022-11-03 01:51:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 01:51:23,037 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 19.23076923076923) internal successors, (250), 14 states have internal predecessors, (250), 5 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 154 [2022-11-03 01:51:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:23,042 INFO L225 Difference]: With dead ends: 1019 [2022-11-03 01:51:23,042 INFO L226 Difference]: Without dead ends: 690 [2022-11-03 01:51:23,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 882 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=337, Invalid=1145, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 01:51:23,044 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 547 mSDsluCounter, 3676 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 239 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:23,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 4141 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1130 Invalid, 0 Unknown, 239 Unchecked, 1.1s Time] [2022-11-03 01:51:23,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-03 01:51:23,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 383. [2022-11-03 01:51:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 375 states have (on average 1.3386666666666667) internal successors, (502), 375 states have internal predecessors, (502), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:51:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 514 transitions. [2022-11-03 01:51:23,080 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 514 transitions. Word has length 154 [2022-11-03 01:51:23,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:23,080 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 514 transitions. [2022-11-03 01:51:23,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 19.23076923076923) internal successors, (250), 14 states have internal predecessors, (250), 5 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-03 01:51:23,081 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 514 transitions. [2022-11-03 01:51:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:23,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:23,083 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:23,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-03 01:51:23,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-03 01:51:23,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:23,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:23,697 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:23,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:23,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1457265389, now seen corresponding path program 1 times [2022-11-03 01:51:23,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:23,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077101268] [2022-11-03 01:51:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:23,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:23,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:23,699 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:23,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 01:51:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:24,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 01:51:24,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:24,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:24,635 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:24,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077101268] [2022-11-03 01:51:24,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077101268] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:24,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1150141171] [2022-11-03 01:51:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:24,636 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:24,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:24,637 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:24,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-03 01:51:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:25,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 01:51:25,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:26,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:26,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1150141171] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:26,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721837711] [2022-11-03 01:51:26,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:26,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:26,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:26,576 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:51:26,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-03 01:51:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:26,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 01:51:26,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:27,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:51:28,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721837711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:28,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2022-11-03 01:51:28,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 8, 8] total 28 [2022-11-03 01:51:28,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321653685] [2022-11-03 01:51:28,230 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2022-11-03 01:51:28,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 01:51:28,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:28,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 01:51:28,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1099, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 01:51:28,233 INFO L87 Difference]: Start difference. First operand 383 states and 514 transitions. Second operand has 28 states, 28 states have (on average 16.107142857142858) internal successors, (451), 28 states have internal predecessors, (451), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2022-11-03 01:51:35,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:35,404 INFO L93 Difference]: Finished difference Result 3173 states and 4477 transitions. [2022-11-03 01:51:35,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-11-03 01:51:35,407 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 16.107142857142858) internal successors, (451), 28 states have internal predecessors, (451), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 154 [2022-11-03 01:51:35,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:35,417 INFO L225 Difference]: With dead ends: 3173 [2022-11-03 01:51:35,418 INFO L226 Difference]: Without dead ends: 2962 [2022-11-03 01:51:35,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3037 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2678, Invalid=11364, Unknown=0, NotChecked=0, Total=14042 [2022-11-03 01:51:35,423 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 3140 mSDsluCounter, 8677 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3140 SdHoareTripleChecker+Valid, 9408 SdHoareTripleChecker+Invalid, 3365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 454 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:35,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3140 Valid, 9408 Invalid, 3365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2636 Invalid, 0 Unknown, 454 Unchecked, 2.8s Time] [2022-11-03 01:51:35,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2022-11-03 01:51:35,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 642. [2022-11-03 01:51:35,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 625 states have (on average 1.3616) internal successors, (851), 625 states have internal predecessors, (851), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 01:51:35,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 881 transitions. [2022-11-03 01:51:35,523 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 881 transitions. Word has length 154 [2022-11-03 01:51:35,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:35,523 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 881 transitions. [2022-11-03 01:51:35,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 16.107142857142858) internal successors, (451), 28 states have internal predecessors, (451), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2022-11-03 01:51:35,524 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 881 transitions. [2022-11-03 01:51:35,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:35,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:35,526 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:35,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:35,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2022-11-03 01:51:35,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-03 01:51:36,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:36,141 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:36,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:36,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2080976673, now seen corresponding path program 1 times [2022-11-03 01:51:36,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:36,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590196754] [2022-11-03 01:51:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:36,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:36,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:36,143 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:36,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 01:51:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:36,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:51:36,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:51:36,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 32 proven. 15 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-03 01:51:36,969 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:36,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590196754] [2022-11-03 01:51:36,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590196754] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:36,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [494477162] [2022-11-03 01:51:36,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:36,969 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:36,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:36,973 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:36,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-03 01:51:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:37,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:37,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:37,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:37,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [494477162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:37,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:51:37,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 14 [2022-11-03 01:51:37,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134702957] [2022-11-03 01:51:37,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:37,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:37,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:37,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:37,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:51:37,648 INFO L87 Difference]: Start difference. First operand 642 states and 881 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:37,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:37,827 INFO L93 Difference]: Finished difference Result 1356 states and 1896 transitions. [2022-11-03 01:51:37,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:37,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:37,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:37,831 INFO L225 Difference]: With dead ends: 1356 [2022-11-03 01:51:37,831 INFO L226 Difference]: Without dead ends: 944 [2022-11-03 01:51:37,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 446 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:51:37,833 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 492 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:37,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 601 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-03 01:51:37,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 706. [2022-11-03 01:51:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 689 states have (on average 1.362844702467344) internal successors, (939), 689 states have internal predecessors, (939), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 01:51:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 969 transitions. [2022-11-03 01:51:37,896 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 969 transitions. Word has length 154 [2022-11-03 01:51:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:37,896 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 969 transitions. [2022-11-03 01:51:37,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:37,897 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 969 transitions. [2022-11-03 01:51:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:37,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:37,899 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:37,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:38,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-03 01:51:38,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:38,303 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:38,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:38,304 INFO L85 PathProgramCache]: Analyzing trace with hash -882380379, now seen corresponding path program 1 times [2022-11-03 01:51:38,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:38,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721111272] [2022-11-03 01:51:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:38,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:38,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:38,306 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:38,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 01:51:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:38,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:51:38,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:51:38,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:38,998 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:51:38,998 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:38,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721111272] [2022-11-03 01:51:38,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721111272] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:38,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [643134836] [2022-11-03 01:51:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:38,998 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:38,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:38,999 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:39,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-03 01:51:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:39,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:39,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:39,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:39,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [643134836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:39,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:51:39,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 01:51:39,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272854397] [2022-11-03 01:51:39,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:39,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:39,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:39,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:39,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:51:39,639 INFO L87 Difference]: Start difference. First operand 706 states and 969 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:39,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:39,896 INFO L93 Difference]: Finished difference Result 1445 states and 1990 transitions. [2022-11-03 01:51:39,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:39,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:39,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:39,901 INFO L225 Difference]: With dead ends: 1445 [2022-11-03 01:51:39,901 INFO L226 Difference]: Without dead ends: 975 [2022-11-03 01:51:39,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:51:39,903 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 365 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:39,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 729 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:39,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-11-03 01:51:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 706. [2022-11-03 01:51:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 689 states have (on average 1.3584905660377358) internal successors, (936), 689 states have internal predecessors, (936), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 01:51:39,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 966 transitions. [2022-11-03 01:51:39,989 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 966 transitions. Word has length 154 [2022-11-03 01:51:39,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:39,989 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 966 transitions. [2022-11-03 01:51:39,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:39,990 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 966 transitions. [2022-11-03 01:51:39,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:39,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:39,992 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:39,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:40,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-03 01:51:40,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:40,397 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:40,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:40,397 INFO L85 PathProgramCache]: Analyzing trace with hash -763938905, now seen corresponding path program 1 times [2022-11-03 01:51:40,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:40,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342106466] [2022-11-03 01:51:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:40,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:40,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:40,400 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:40,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 01:51:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:40,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:51:40,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:51:40,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:51:41,066 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:41,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342106466] [2022-11-03 01:51:41,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342106466] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:41,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1837209756] [2022-11-03 01:51:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:41,066 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:41,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:41,068 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:41,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-11-03 01:51:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:41,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:41,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:41,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:41,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1837209756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:41,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:51:41,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 01:51:41,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578332877] [2022-11-03 01:51:41,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:41,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:41,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:41,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:41,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:51:41,736 INFO L87 Difference]: Start difference. First operand 706 states and 966 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:41,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:41,962 INFO L93 Difference]: Finished difference Result 1031 states and 1418 transitions. [2022-11-03 01:51:41,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:41,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:41,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:41,967 INFO L225 Difference]: With dead ends: 1031 [2022-11-03 01:51:41,967 INFO L226 Difference]: Without dead ends: 593 [2022-11-03 01:51:41,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:51:41,968 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 359 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:41,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 731 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:41,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-11-03 01:51:42,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 547. [2022-11-03 01:51:42,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.3358348968105065) internal successors, (712), 533 states have internal predecessors, (712), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:51:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 736 transitions. [2022-11-03 01:51:42,023 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 736 transitions. Word has length 154 [2022-11-03 01:51:42,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:42,024 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 736 transitions. [2022-11-03 01:51:42,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:42,024 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 736 transitions. [2022-11-03 01:51:42,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:42,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:42,026 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:42,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:42,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:42,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:42,445 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:42,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1731752675, now seen corresponding path program 1 times [2022-11-03 01:51:42,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:42,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900713568] [2022-11-03 01:51:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:42,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:42,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:42,448 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:42,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 01:51:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:42,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:51:42,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:51:42,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:43,145 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:51:43,146 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:43,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900713568] [2022-11-03 01:51:43,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900713568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:43,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1629628494] [2022-11-03 01:51:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:43,146 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:43,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:43,149 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:43,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2022-11-03 01:51:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:43,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:43,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:43,870 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:43,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:43,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1629628494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:43,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:51:43,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 01:51:43,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567466818] [2022-11-03 01:51:43,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:43,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:43,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:43,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:43,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:51:43,872 INFO L87 Difference]: Start difference. First operand 547 states and 736 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:44,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:44,108 INFO L93 Difference]: Finished difference Result 1059 states and 1432 transitions. [2022-11-03 01:51:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:44,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:44,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:44,111 INFO L225 Difference]: With dead ends: 1059 [2022-11-03 01:51:44,111 INFO L226 Difference]: Without dead ends: 787 [2022-11-03 01:51:44,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:51:44,112 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 355 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:44,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 724 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-11-03 01:51:44,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 547. [2022-11-03 01:51:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.3302063789868668) internal successors, (709), 533 states have internal predecessors, (709), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:51:44,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 733 transitions. [2022-11-03 01:51:44,170 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 733 transitions. Word has length 154 [2022-11-03 01:51:44,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:44,171 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 733 transitions. [2022-11-03 01:51:44,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:44,171 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 733 transitions. [2022-11-03 01:51:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:44,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:44,173 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:44,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:44,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:44,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:44,588 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:44,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:44,588 INFO L85 PathProgramCache]: Analyzing trace with hash -130681569, now seen corresponding path program 1 times [2022-11-03 01:51:44,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:44,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529863560] [2022-11-03 01:51:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:44,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:44,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:44,590 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:44,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 01:51:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:44,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:51:44,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:51:45,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:51:45,246 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:45,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529863560] [2022-11-03 01:51:45,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529863560] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:45,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [184433371] [2022-11-03 01:51:45,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:45,247 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:45,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:45,249 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:45,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-11-03 01:51:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:45,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:45,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:45,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:45,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [184433371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:45,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:51:45,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 01:51:45,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269543637] [2022-11-03 01:51:45,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:45,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:45,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:45,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:45,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:51:45,927 INFO L87 Difference]: Start difference. First operand 547 states and 733 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:46,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:46,143 INFO L93 Difference]: Finished difference Result 1047 states and 1410 transitions. [2022-11-03 01:51:46,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:46,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:46,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:46,148 INFO L225 Difference]: With dead ends: 1047 [2022-11-03 01:51:46,148 INFO L226 Difference]: Without dead ends: 779 [2022-11-03 01:51:46,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:51:46,149 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 349 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:46,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 721 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-11-03 01:51:46,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 547. [2022-11-03 01:51:46,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.324577861163227) internal successors, (706), 533 states have internal predecessors, (706), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:51:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 730 transitions. [2022-11-03 01:51:46,210 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 730 transitions. Word has length 154 [2022-11-03 01:51:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:46,210 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 730 transitions. [2022-11-03 01:51:46,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:46,211 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 730 transitions. [2022-11-03 01:51:46,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:46,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:46,213 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:46,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2022-11-03 01:51:46,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-03 01:51:46,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:46,618 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:46,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:46,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1014190559, now seen corresponding path program 1 times [2022-11-03 01:51:46,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:46,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542053292] [2022-11-03 01:51:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:46,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:46,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:46,621 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:46,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 01:51:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:46,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:51:46,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:47,083 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:51:47,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:51:47,273 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:47,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542053292] [2022-11-03 01:51:47,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542053292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:47,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1623879273] [2022-11-03 01:51:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:47,274 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:47,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:47,274 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:47,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2022-11-03 01:51:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:47,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:47,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:47,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:47,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1623879273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:47,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:51:47,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 01:51:47,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517598749] [2022-11-03 01:51:47,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:47,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:47,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:47,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:47,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:51:47,961 INFO L87 Difference]: Start difference. First operand 547 states and 730 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:48,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:48,195 INFO L93 Difference]: Finished difference Result 1035 states and 1388 transitions. [2022-11-03 01:51:48,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:48,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:48,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:48,200 INFO L225 Difference]: With dead ends: 1035 [2022-11-03 01:51:48,200 INFO L226 Difference]: Without dead ends: 771 [2022-11-03 01:51:48,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:51:48,201 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 343 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:48,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 718 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:48,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-11-03 01:51:48,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 547. [2022-11-03 01:51:48,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.3189493433395871) internal successors, (703), 533 states have internal predecessors, (703), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:51:48,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 727 transitions. [2022-11-03 01:51:48,260 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 727 transitions. Word has length 154 [2022-11-03 01:51:48,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:48,260 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 727 transitions. [2022-11-03 01:51:48,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:48,261 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 727 transitions. [2022-11-03 01:51:48,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:48,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:48,263 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:48,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:48,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:48,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:48,669 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:48,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:48,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1784924125, now seen corresponding path program 1 times [2022-11-03 01:51:48,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:48,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949782761] [2022-11-03 01:51:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:48,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:48,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:48,671 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:48,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 01:51:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:49,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:51:49,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:51:49,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:49,390 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:51:49,391 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:49,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949782761] [2022-11-03 01:51:49,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949782761] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:49,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1489453310] [2022-11-03 01:51:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:49,392 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:49,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:49,393 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:49,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2022-11-03 01:51:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:49,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:49,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:50,097 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:50,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:50,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1489453310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:50,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:51:50,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 01:51:50,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865090930] [2022-11-03 01:51:50,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:50,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:50,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:50,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:50,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:51:50,099 INFO L87 Difference]: Start difference. First operand 547 states and 727 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:50,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:50,339 INFO L93 Difference]: Finished difference Result 1011 states and 1355 transitions. [2022-11-03 01:51:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:50,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:50,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:50,344 INFO L225 Difference]: With dead ends: 1011 [2022-11-03 01:51:50,344 INFO L226 Difference]: Without dead ends: 755 [2022-11-03 01:51:50,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:51:50,346 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 333 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:50,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 717 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-03 01:51:50,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 547. [2022-11-03 01:51:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.3133208255159474) internal successors, (700), 533 states have internal predecessors, (700), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:51:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 724 transitions. [2022-11-03 01:51:50,404 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 724 transitions. Word has length 154 [2022-11-03 01:51:50,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:50,405 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 724 transitions. [2022-11-03 01:51:50,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:50,405 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 724 transitions. [2022-11-03 01:51:50,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:50,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:50,407 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:50,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-03 01:51:50,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (45)] Ended with exit code 0 [2022-11-03 01:51:50,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:50,825 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:50,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:50,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1452205093, now seen corresponding path program 1 times [2022-11-03 01:51:50,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:50,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74571975] [2022-11-03 01:51:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:50,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:50,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:50,827 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:50,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 01:51:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:51,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:51:51,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:51,304 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:51:51,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:51:51,484 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:51,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74571975] [2022-11-03 01:51:51,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74571975] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:51,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [919285705] [2022-11-03 01:51:51,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:51,485 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:51,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:51,493 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:51,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2022-11-03 01:51:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:52,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:52,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:52,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:52,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [919285705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:52,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:51:52,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 01:51:52,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248334491] [2022-11-03 01:51:52,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:52,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:52,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:52,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:52,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:51:52,203 INFO L87 Difference]: Start difference. First operand 547 states and 724 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:52,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:52,467 INFO L93 Difference]: Finished difference Result 999 states and 1333 transitions. [2022-11-03 01:51:52,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:52,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:52,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:52,469 INFO L225 Difference]: With dead ends: 999 [2022-11-03 01:51:52,469 INFO L226 Difference]: Without dead ends: 747 [2022-11-03 01:51:52,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:51:52,471 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 327 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:52,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 714 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:52,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-03 01:51:52,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 547. [2022-11-03 01:51:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.3076923076923077) internal successors, (697), 533 states have internal predecessors, (697), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:51:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 721 transitions. [2022-11-03 01:51:52,520 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 721 transitions. Word has length 154 [2022-11-03 01:51:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:52,521 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 721 transitions. [2022-11-03 01:51:52,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 721 transitions. [2022-11-03 01:51:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:52,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:52,524 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:52,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:52,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (47)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:52,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:52,941 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:52,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:52,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1479270695, now seen corresponding path program 1 times [2022-11-03 01:51:52,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:52,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150167582] [2022-11-03 01:51:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:52,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:52,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:52,943 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:52,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 01:51:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:53,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:51:53,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:53,390 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:51:53,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:51:53,581 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:53,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150167582] [2022-11-03 01:51:53,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150167582] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:53,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [149308202] [2022-11-03 01:51:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:53,582 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:53,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:53,593 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:53,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2022-11-03 01:51:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:54,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:54,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:54,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:54,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [149308202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:54,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:51:54,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 01:51:54,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475036046] [2022-11-03 01:51:54,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:54,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:54,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:54,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:54,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:51:54,366 INFO L87 Difference]: Start difference. First operand 547 states and 721 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:54,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:54,597 INFO L93 Difference]: Finished difference Result 993 states and 1320 transitions. [2022-11-03 01:51:54,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:54,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:54,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:54,601 INFO L225 Difference]: With dead ends: 993 [2022-11-03 01:51:54,601 INFO L226 Difference]: Without dead ends: 743 [2022-11-03 01:51:54,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:51:54,604 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 319 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:54,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 715 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:54,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-11-03 01:51:54,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 547. [2022-11-03 01:51:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.3039399624765478) internal successors, (695), 533 states have internal predecessors, (695), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:51:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 719 transitions. [2022-11-03 01:51:54,662 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 719 transitions. Word has length 154 [2022-11-03 01:51:54,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:54,663 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 719 transitions. [2022-11-03 01:51:54,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:54,664 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 719 transitions. [2022-11-03 01:51:54,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:54,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:54,666 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:54,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:54,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (49)] Ended with exit code 0 [2022-11-03 01:51:55,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:55,081 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:55,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:55,081 INFO L85 PathProgramCache]: Analyzing trace with hash -431771863, now seen corresponding path program 1 times [2022-11-03 01:51:55,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:55,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919573196] [2022-11-03 01:51:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:55,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:55,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:55,083 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:55,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 01:51:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:55,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:51:55,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:51:55,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:51:55,739 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:55,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919573196] [2022-11-03 01:51:55,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919573196] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:55,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [594786921] [2022-11-03 01:51:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:55,740 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:55,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:55,749 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:55,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2022-11-03 01:51:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:56,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:56,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:56,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:56,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [594786921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:56,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:51:56,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 01:51:56,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130046767] [2022-11-03 01:51:56,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:56,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:56,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:56,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:56,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:51:56,440 INFO L87 Difference]: Start difference. First operand 547 states and 719 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:56,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:56,689 INFO L93 Difference]: Finished difference Result 993 states and 1314 transitions. [2022-11-03 01:51:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:56,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:56,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:56,693 INFO L225 Difference]: With dead ends: 993 [2022-11-03 01:51:56,693 INFO L226 Difference]: Without dead ends: 743 [2022-11-03 01:51:56,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:51:56,694 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 315 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:56,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 708 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:56,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-11-03 01:51:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 547. [2022-11-03 01:51:56,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.300187617260788) internal successors, (693), 533 states have internal predecessors, (693), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:51:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 717 transitions. [2022-11-03 01:51:56,739 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 717 transitions. Word has length 154 [2022-11-03 01:51:56,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:56,740 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 717 transitions. [2022-11-03 01:51:56,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:56,740 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 717 transitions. [2022-11-03 01:51:56,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:56,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:56,742 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:56,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (51)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:56,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2022-11-03 01:51:57,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:57,147 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:57,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:57,148 INFO L85 PathProgramCache]: Analyzing trace with hash -924398037, now seen corresponding path program 1 times [2022-11-03 01:51:57,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:57,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477087210] [2022-11-03 01:51:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:57,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:57,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:57,150 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:57,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 01:51:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:57,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:51:57,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:57,649 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:51:57,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:57,850 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:51:57,850 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:57,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477087210] [2022-11-03 01:51:57,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477087210] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:57,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [739036284] [2022-11-03 01:51:57,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:57,851 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:57,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:51:57,852 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:51:57,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2022-11-03 01:51:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:58,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:58,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:58,609 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:51:58,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:58,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [739036284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:58,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:51:58,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 01:51:58,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666456133] [2022-11-03 01:51:58,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:58,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:58,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:58,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:58,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:51:58,611 INFO L87 Difference]: Start difference. First operand 547 states and 717 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:58,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:58,860 INFO L93 Difference]: Finished difference Result 993 states and 1308 transitions. [2022-11-03 01:51:58,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:51:58,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:51:58,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:58,863 INFO L225 Difference]: With dead ends: 993 [2022-11-03 01:51:58,863 INFO L226 Difference]: Without dead ends: 743 [2022-11-03 01:51:58,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:51:58,864 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 311 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:58,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 705 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:51:58,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-11-03 01:51:58,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 547. [2022-11-03 01:51:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.296435272045028) internal successors, (691), 533 states have internal predecessors, (691), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:51:58,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 715 transitions. [2022-11-03 01:51:58,907 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 715 transitions. Word has length 154 [2022-11-03 01:51:58,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:58,908 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 715 transitions. [2022-11-03 01:51:58,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:51:58,908 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 715 transitions. [2022-11-03 01:51:58,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:51:58,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:58,909 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:58,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-03 01:51:59,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (53)] Ended with exit code 0 [2022-11-03 01:51:59,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:51:59,310 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:59,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:59,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2140551763, now seen corresponding path program 1 times [2022-11-03 01:51:59,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:59,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893092689] [2022-11-03 01:51:59,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:59,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:59,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:59,314 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:59,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 01:51:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:59,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:51:59,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:51:59,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:52:00,023 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:52:00,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893092689] [2022-11-03 01:52:00,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893092689] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:00,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2125326659] [2022-11-03 01:52:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:00,023 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:52:00,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:52:00,024 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:52:00,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (55)] Waiting until timeout for monitored process [2022-11-03 01:52:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:00,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:52:00,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:52:00,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:52:00,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2125326659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:00,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:52:00,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 01:52:00,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116526569] [2022-11-03 01:52:00,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:00,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:52:00,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:52:00,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:52:00,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:52:00,791 INFO L87 Difference]: Start difference. First operand 547 states and 715 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:52:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:01,035 INFO L93 Difference]: Finished difference Result 999 states and 1312 transitions. [2022-11-03 01:52:01,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:52:01,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:52:01,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:01,040 INFO L225 Difference]: With dead ends: 999 [2022-11-03 01:52:01,040 INFO L226 Difference]: Without dead ends: 749 [2022-11-03 01:52:01,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:52:01,041 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 301 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:01,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 704 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:52:01,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-03 01:52:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 551. [2022-11-03 01:52:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 537 states have (on average 1.2905027932960893) internal successors, (693), 537 states have internal predecessors, (693), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:52:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 717 transitions. [2022-11-03 01:52:01,118 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 717 transitions. Word has length 154 [2022-11-03 01:52:01,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:01,118 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 717 transitions. [2022-11-03 01:52:01,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:52:01,119 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 717 transitions. [2022-11-03 01:52:01,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:52:01,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:01,121 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:01,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:01,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (55)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:01,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:52:01,538 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:01,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:01,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1579851985, now seen corresponding path program 1 times [2022-11-03 01:52:01,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:52:01,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8638459] [2022-11-03 01:52:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:01,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:52:01,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:52:01,541 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:52:01,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 01:52:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:01,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:52:01,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:52:02,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:02,225 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:52:02,225 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:52:02,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8638459] [2022-11-03 01:52:02,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8638459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:02,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [53042694] [2022-11-03 01:52:02,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:02,226 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:52:02,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:52:02,227 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:52:02,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (57)] Waiting until timeout for monitored process [2022-11-03 01:52:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:02,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:52:02,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:52:03,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:52:03,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [53042694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:03,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:52:03,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 01:52:03,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536845595] [2022-11-03 01:52:03,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:03,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:52:03,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:52:03,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:52:03,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:52:03,073 INFO L87 Difference]: Start difference. First operand 551 states and 717 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:52:03,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:03,343 INFO L93 Difference]: Finished difference Result 1007 states and 1312 transitions. [2022-11-03 01:52:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:52:03,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:52:03,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:03,347 INFO L225 Difference]: With dead ends: 1007 [2022-11-03 01:52:03,348 INFO L226 Difference]: Without dead ends: 757 [2022-11-03 01:52:03,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:52:03,349 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 293 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:03,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 705 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:52:03,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-11-03 01:52:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 555. [2022-11-03 01:52:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 541 states have (on average 1.2846580406654344) internal successors, (695), 541 states have internal predecessors, (695), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:52:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 719 transitions. [2022-11-03 01:52:03,410 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 719 transitions. Word has length 154 [2022-11-03 01:52:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:03,410 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 719 transitions. [2022-11-03 01:52:03,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:52:03,411 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 719 transitions. [2022-11-03 01:52:03,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:52:03,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:03,413 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:03,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (57)] Ended with exit code 0 [2022-11-03 01:52:03,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:03,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:52:03,818 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:03,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:03,818 INFO L85 PathProgramCache]: Analyzing trace with hash -193066575, now seen corresponding path program 1 times [2022-11-03 01:52:03,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:52:03,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473746524] [2022-11-03 01:52:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:03,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:52:03,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:52:03,820 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:52:03,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 01:52:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:04,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:52:04,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:04,276 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:52:04,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:52:04,447 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:52:04,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473746524] [2022-11-03 01:52:04,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473746524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:04,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1056282824] [2022-11-03 01:52:04,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:04,447 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:52:04,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:52:04,448 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:52:04,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process [2022-11-03 01:52:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:05,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:52:05,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:52:05,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:52:05,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1056282824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:05,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:52:05,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 01:52:05,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210569147] [2022-11-03 01:52:05,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:05,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:52:05,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:52:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:52:05,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:52:05,164 INFO L87 Difference]: Start difference. First operand 555 states and 719 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:52:05,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:05,416 INFO L93 Difference]: Finished difference Result 1015 states and 1312 transitions. [2022-11-03 01:52:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:52:05,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:52:05,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:05,432 INFO L225 Difference]: With dead ends: 1015 [2022-11-03 01:52:05,433 INFO L226 Difference]: Without dead ends: 765 [2022-11-03 01:52:05,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:52:05,434 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 289 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:05,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 698 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:52:05,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-11-03 01:52:05,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 559. [2022-11-03 01:52:05,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 545 states have (on average 1.2788990825688074) internal successors, (697), 545 states have internal predecessors, (697), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:52:05,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 721 transitions. [2022-11-03 01:52:05,507 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 721 transitions. Word has length 154 [2022-11-03 01:52:05,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:05,508 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 721 transitions. [2022-11-03 01:52:05,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:52:05,508 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 721 transitions. [2022-11-03 01:52:05,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:52:05,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:05,510 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:05,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (59)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:05,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-03 01:52:05,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:52:05,915 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:05,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2073314611, now seen corresponding path program 1 times [2022-11-03 01:52:05,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:52:05,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713928278] [2022-11-03 01:52:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:05,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:52:05,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:52:05,917 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:52:05,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 01:52:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:06,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:52:06,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:52:06,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:06,542 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:52:06,543 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:52:06,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713928278] [2022-11-03 01:52:06,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713928278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:06,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [87874106] [2022-11-03 01:52:06,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:06,543 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:52:06,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:52:06,544 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:52:06,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2022-11-03 01:52:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:07,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:52:07,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:07,323 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:52:07,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:52:07,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [87874106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:07,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:52:07,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 01:52:07,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683381357] [2022-11-03 01:52:07,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:07,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:52:07,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:52:07,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:52:07,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:52:07,327 INFO L87 Difference]: Start difference. First operand 559 states and 721 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:52:07,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:07,599 INFO L93 Difference]: Finished difference Result 1021 states and 1308 transitions. [2022-11-03 01:52:07,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:52:07,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 01:52:07,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:07,602 INFO L225 Difference]: With dead ends: 1021 [2022-11-03 01:52:07,603 INFO L226 Difference]: Without dead ends: 771 [2022-11-03 01:52:07,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:52:07,604 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 283 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:07,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 695 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:52:07,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-11-03 01:52:07,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 563. [2022-11-03 01:52:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 549 states have (on average 1.2768670309653916) internal successors, (701), 549 states have internal predecessors, (701), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:52:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 725 transitions. [2022-11-03 01:52:07,664 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 725 transitions. Word has length 154 [2022-11-03 01:52:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:07,665 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 725 transitions. [2022-11-03 01:52:07,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:52:07,666 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 725 transitions. [2022-11-03 01:52:07,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 01:52:07,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:07,667 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:07,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:07,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2022-11-03 01:52:08,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:52:08,073 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:08,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:08,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1720226229, now seen corresponding path program 1 times [2022-11-03 01:52:08,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:52:08,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473557564] [2022-11-03 01:52:08,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:08,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:52:08,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:52:08,076 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:52:08,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 01:52:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:08,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:52:08,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:52:08,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:52:08,745 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:52:08,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473557564] [2022-11-03 01:52:08,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473557564] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:08,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [335102565] [2022-11-03 01:52:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:08,746 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:52:08,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:52:08,747 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:52:08,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-03 01:52:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:09,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 01:52:09,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 01:52:11,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:11,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [335102565] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:11,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255394341] [2022-11-03 01:52:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:11,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:11,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:11,786 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:11,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-03 01:52:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:12,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:52:12,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:52:12,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:12,656 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 01:52:12,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255394341] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:12,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-03 01:52:12,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 16, 10, 10] total 35 [2022-11-03 01:52:12,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838756882] [2022-11-03 01:52:12,656 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:12,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-03 01:52:12,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:52:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-03 01:52:12,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1516, Unknown=0, NotChecked=0, Total=1640 [2022-11-03 01:52:12,659 INFO L87 Difference]: Start difference. First operand 563 states and 725 transitions. Second operand has 35 states, 31 states have (on average 8.290322580645162) internal successors, (257), 35 states have internal predecessors, (257), 11 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 7 states have call predecessors, (24), 11 states have call successors, (24) [2022-11-03 01:52:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:13,833 INFO L93 Difference]: Finished difference Result 953 states and 1216 transitions. [2022-11-03 01:52:13,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:52:13,834 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 8.290322580645162) internal successors, (257), 35 states have internal predecessors, (257), 11 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 7 states have call predecessors, (24), 11 states have call successors, (24) Word has length 154 [2022-11-03 01:52:13,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:13,835 INFO L225 Difference]: With dead ends: 953 [2022-11-03 01:52:13,835 INFO L226 Difference]: Without dead ends: 627 [2022-11-03 01:52:13,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 751 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=222, Invalid=1940, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 01:52:13,837 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 1377 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 582 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:13,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 3258 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 564 Invalid, 0 Unknown, 582 Unchecked, 0.6s Time] [2022-11-03 01:52:13,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-11-03 01:52:13,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 487. [2022-11-03 01:52:13,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 473 states have (on average 1.291754756871036) internal successors, (611), 473 states have internal predecessors, (611), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:52:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 635 transitions. [2022-11-03 01:52:13,898 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 635 transitions. Word has length 154 [2022-11-03 01:52:13,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:13,898 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 635 transitions. [2022-11-03 01:52:13,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 8.290322580645162) internal successors, (257), 35 states have internal predecessors, (257), 11 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 7 states have call predecessors, (24), 11 states have call successors, (24) [2022-11-03 01:52:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 635 transitions. [2022-11-03 01:52:13,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:52:13,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:13,901 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:13,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:14,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:14,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Ended with exit code 0 [2022-11-03 01:52:14,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:52:14,519 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:14,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:14,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1946513426, now seen corresponding path program 1 times [2022-11-03 01:52:14,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:52:14,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064799877] [2022-11-03 01:52:14,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:14,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:52:14,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:52:14,522 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:52:14,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-03 01:52:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:15,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:52:15,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 8 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-03 01:52:15,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:15,384 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 127 proven. 8 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-03 01:52:15,385 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:52:15,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064799877] [2022-11-03 01:52:15,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064799877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:15,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [656695578] [2022-11-03 01:52:15,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:15,386 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:52:15,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:52:15,387 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:52:15,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process [2022-11-03 01:52:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:16,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:52:16,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 8 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-03 01:52:16,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 127 proven. 8 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-03 01:52:16,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [656695578] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:16,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303877012] [2022-11-03 01:52:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:16,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:16,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:16,553 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:16,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-11-03 01:52:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:17,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:52:17,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 8 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-03 01:52:17,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 127 proven. 8 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-03 01:52:17,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303877012] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:17,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 01:52:17,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 6 [2022-11-03 01:52:17,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124597522] [2022-11-03 01:52:17,373 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:17,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:52:17,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:52:17,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:52:17,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:52:17,375 INFO L87 Difference]: Start difference. First operand 487 states and 635 transitions. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 01:52:17,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:17,586 INFO L93 Difference]: Finished difference Result 749 states and 965 transitions. [2022-11-03 01:52:17,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:52:17,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 261 [2022-11-03 01:52:17,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:17,589 INFO L225 Difference]: With dead ends: 749 [2022-11-03 01:52:17,589 INFO L226 Difference]: Without dead ends: 495 [2022-11-03 01:52:17,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1563 GetRequests, 1556 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:52:17,591 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 399 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:17,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 695 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:52:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-11-03 01:52:17,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 487. [2022-11-03 01:52:17,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 473 states have (on average 1.285412262156448) internal successors, (608), 473 states have internal predecessors, (608), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:52:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 632 transitions. [2022-11-03 01:52:17,651 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 632 transitions. Word has length 261 [2022-11-03 01:52:17,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:17,651 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 632 transitions. [2022-11-03 01:52:17,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 01:52:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 632 transitions. [2022-11-03 01:52:17,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:52:17,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:17,654 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:17,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:17,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (66)] Ended with exit code 0 [2022-11-03 01:52:18,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2022-11-03 01:52:18,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:52:18,265 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:18,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:18,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1984987372, now seen corresponding path program 2 times [2022-11-03 01:52:18,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:52:18,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761486713] [2022-11-03 01:52:18,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 01:52:18,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:52:18,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:52:18,268 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:52:18,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-03 01:52:18,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 01:52:18,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:52:18,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:52:18,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 14 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 01:52:19,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:19,521 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:52:19,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761486713] [2022-11-03 01:52:19,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761486713] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:19,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [217586700] [2022-11-03 01:52:19,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 01:52:19,522 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:52:19,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:52:19,522 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:52:19,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (69)] Waiting until timeout for monitored process [2022-11-03 01:52:20,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 01:52:20,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:52:20,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:52:20,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 197 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 01:52:20,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-03 01:52:21,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [217586700] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:21,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:52:21,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 01:52:21,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444148202] [2022-11-03 01:52:21,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:21,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:52:21,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:52:21,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:52:21,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:52:21,039 INFO L87 Difference]: Start difference. First operand 487 states and 632 transitions. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:52:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:21,131 INFO L93 Difference]: Finished difference Result 847 states and 1083 transitions. [2022-11-03 01:52:21,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:52:21,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 01:52:21,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:21,133 INFO L225 Difference]: With dead ends: 847 [2022-11-03 01:52:21,133 INFO L226 Difference]: Without dead ends: 597 [2022-11-03 01:52:21,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 899 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:52:21,134 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 130 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:21,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 642 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 59 Unchecked, 0.0s Time] [2022-11-03 01:52:21,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-11-03 01:52:21,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 491. [2022-11-03 01:52:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 477 states have (on average 1.2830188679245282) internal successors, (612), 477 states have internal predecessors, (612), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:52:21,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 636 transitions. [2022-11-03 01:52:21,190 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 636 transitions. Word has length 261 [2022-11-03 01:52:21,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:21,190 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 636 transitions. [2022-11-03 01:52:21,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:52:21,191 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 636 transitions. [2022-11-03 01:52:21,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:52:21,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:21,193 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:21,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (68)] Ended with exit code 0 [2022-11-03 01:52:21,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (69)] Ended with exit code 0 [2022-11-03 01:52:21,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:52:21,613 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:21,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:21,613 INFO L85 PathProgramCache]: Analyzing trace with hash 63925392, now seen corresponding path program 1 times [2022-11-03 01:52:21,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:52:21,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167309512] [2022-11-03 01:52:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:21,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:52:21,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:52:21,616 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:52:21,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-03 01:52:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:22,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:52:22,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:22,783 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 14 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 01:52:22,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:22,844 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:52:22,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167309512] [2022-11-03 01:52:22,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167309512] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:22,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [579591782] [2022-11-03 01:52:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:22,845 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:52:22,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:52:22,846 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:52:22,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (71)] Waiting until timeout for monitored process [2022-11-03 01:52:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:23,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-03 01:52:23,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 01:52:25,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:26,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [579591782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:26,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614807087] [2022-11-03 01:52:26,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:26,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:26,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:26,286 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:26,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-11-03 01:52:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:26,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:52:26,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 13 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 01:52:28,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:28,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614807087] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:28,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:52:28,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20, 7] total 32 [2022-11-03 01:52:28,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855532870] [2022-11-03 01:52:28,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:28,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-03 01:52:28,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:52:28,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-03 01:52:28,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1626, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 01:52:28,483 INFO L87 Difference]: Start difference. First operand 491 states and 636 transitions. Second operand has 32 states, 32 states have (on average 16.6875) internal successors, (534), 32 states have internal predecessors, (534), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-03 01:54:10,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:10,148 INFO L93 Difference]: Finished difference Result 11894 states and 15190 transitions. [2022-11-03 01:54:10,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 420 states. [2022-11-03 01:54:10,149 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 16.6875) internal successors, (534), 32 states have internal predecessors, (534), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 261 [2022-11-03 01:54:10,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:10,161 INFO L225 Difference]: With dead ends: 11894 [2022-11-03 01:54:10,161 INFO L226 Difference]: Without dead ends: 11445 [2022-11-03 01:54:10,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1558 GetRequests, 1103 SyntacticMatches, 0 SemanticMatches, 455 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85518 ImplicationChecksByTransitivity, 91.2s TimeCoverageRelationStatistics Valid=21078, Invalid=187314, Unknown=0, NotChecked=0, Total=208392 [2022-11-03 01:54:10,181 INFO L413 NwaCegarLoop]: 1334 mSDtfsCounter, 11243 mSDsluCounter, 27097 mSDsCounter, 0 mSdLazyCounter, 8032 mSolverCounterSat, 1272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11249 SdHoareTripleChecker+Valid, 28431 SdHoareTripleChecker+Invalid, 14466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1272 IncrementalHoareTripleChecker+Valid, 8032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5162 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:10,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11249 Valid, 28431 Invalid, 14466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1272 Valid, 8032 Invalid, 0 Unknown, 5162 Unchecked, 9.7s Time] [2022-11-03 01:54:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11445 states. [2022-11-03 01:54:10,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11445 to 2123. [2022-11-03 01:54:10,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2085 states have (on average 1.2695443645083933) internal successors, (2647), 2085 states have internal predecessors, (2647), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-11-03 01:54:10,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 2719 transitions. [2022-11-03 01:54:10,555 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 2719 transitions. Word has length 261 [2022-11-03 01:54:10,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:10,556 INFO L495 AbstractCegarLoop]: Abstraction has 2123 states and 2719 transitions. [2022-11-03 01:54:10,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 16.6875) internal successors, (534), 32 states have internal predecessors, (534), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-03 01:54:10,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 2719 transitions. [2022-11-03 01:54:10,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:54:10,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:10,562 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:10,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-11-03 01:54:10,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (70)] Ended with exit code 0 [2022-11-03 01:54:10,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (71)] Ended with exit code 0 [2022-11-03 01:54:11,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:54:11,177 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:11,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1758483730, now seen corresponding path program 1 times [2022-11-03 01:54:11,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:11,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859858999] [2022-11-03 01:54:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:11,179 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:11,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:11,181 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:11,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-03 01:54:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:11,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:54:11,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 18 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 01:54:12,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:12,460 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:12,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859858999] [2022-11-03 01:54:12,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859858999] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:12,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1174899193] [2022-11-03 01:54:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:12,460 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:54:12,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:54:12,461 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:54:12,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (74)] Waiting until timeout for monitored process [2022-11-03 01:54:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:13,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:54:13,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 197 proven. 34 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:54:14,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:14,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1174899193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:14,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479259677] [2022-11-03 01:54:14,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:14,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:54:14,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:54:14,768 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:54:14,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-11-03 01:54:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:15,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:54:15,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 15 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 01:54:16,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:16,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479259677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:16,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:54:16,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2022-11-03 01:54:16,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847321186] [2022-11-03 01:54:16,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:54:16,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 01:54:16,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:16,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 01:54:16,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2022-11-03 01:54:16,725 INFO L87 Difference]: Start difference. First operand 2123 states and 2719 transitions. Second operand has 19 states, 19 states have (on average 23.57894736842105) internal successors, (448), 19 states have internal predecessors, (448), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 01:54:32,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:32,862 INFO L93 Difference]: Finished difference Result 12021 states and 15404 transitions. [2022-11-03 01:54:32,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-11-03 01:54:32,864 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 23.57894736842105) internal successors, (448), 19 states have internal predecessors, (448), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 261 [2022-11-03 01:54:32,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:32,882 INFO L225 Difference]: With dead ends: 12021 [2022-11-03 01:54:32,882 INFO L226 Difference]: Without dead ends: 9948 [2022-11-03 01:54:32,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1288 GetRequests, 1163 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4672 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=3203, Invalid=12799, Unknown=0, NotChecked=0, Total=16002 [2022-11-03 01:54:32,887 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 7550 mSDsluCounter, 6155 mSDsCounter, 0 mSdLazyCounter, 2786 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7550 SdHoareTripleChecker+Valid, 7045 SdHoareTripleChecker+Invalid, 3592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:32,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7550 Valid, 7045 Invalid, 3592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2786 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 01:54:32,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9948 states. [2022-11-03 01:54:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9948 to 2203. [2022-11-03 01:54:33,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.2621584066697544) internal successors, (2725), 2159 states have internal predecessors, (2725), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 01:54:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2809 transitions. [2022-11-03 01:54:33,200 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2809 transitions. Word has length 261 [2022-11-03 01:54:33,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:33,200 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2809 transitions. [2022-11-03 01:54:33,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.57894736842105) internal successors, (448), 19 states have internal predecessors, (448), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 01:54:33,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2809 transitions. [2022-11-03 01:54:33,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:54:33,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:33,205 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:33,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (74)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:33,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:33,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-11-03 01:54:33,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:54:33,816 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:33,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:33,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2080479002, now seen corresponding path program 1 times [2022-11-03 01:54:33,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:33,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217022974] [2022-11-03 01:54:33,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:33,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:33,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:33,822 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:33,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-03 01:54:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:34,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:54:34,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 01:54:34,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:35,060 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:35,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217022974] [2022-11-03 01:54:35,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217022974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:35,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [120022714] [2022-11-03 01:54:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:35,061 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:54:35,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:54:35,064 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:54:35,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (77)] Waiting until timeout for monitored process [2022-11-03 01:54:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:36,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:54:36,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 01:54:36,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 01:54:36,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [120022714] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:36,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:54:36,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 01:54:36,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655332995] [2022-11-03 01:54:36,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:36,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:36,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:36,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:36,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:54:36,628 INFO L87 Difference]: Start difference. First operand 2203 states and 2809 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:54:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:37,013 INFO L93 Difference]: Finished difference Result 5408 states and 6899 transitions. [2022-11-03 01:54:37,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:54:37,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 01:54:37,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:37,020 INFO L225 Difference]: With dead ends: 5408 [2022-11-03 01:54:37,021 INFO L226 Difference]: Without dead ends: 3674 [2022-11-03 01:54:37,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 899 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:54:37,024 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 127 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:37,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 695 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2022-11-03 01:54:37,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2022-11-03 01:54:37,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 2203. [2022-11-03 01:54:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.2575266327003243) internal successors, (2715), 2159 states have internal predecessors, (2715), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 01:54:37,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2799 transitions. [2022-11-03 01:54:37,358 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2799 transitions. Word has length 261 [2022-11-03 01:54:37,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:37,359 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2799 transitions. [2022-11-03 01:54:37,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:54:37,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2799 transitions. [2022-11-03 01:54:37,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:54:37,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:37,363 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:37,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:37,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (77)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:37,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:54:37,781 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:37,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:37,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1183447396, now seen corresponding path program 1 times [2022-11-03 01:54:37,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:37,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277149531] [2022-11-03 01:54:37,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:37,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:37,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:37,785 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:37,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-03 01:54:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:38,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:54:38,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 01:54:38,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:39,047 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:39,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277149531] [2022-11-03 01:54:39,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277149531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:39,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [145775394] [2022-11-03 01:54:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:39,048 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:54:39,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:54:39,050 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:54:39,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (79)] Waiting until timeout for monitored process [2022-11-03 01:54:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:40,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:54:40,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 01:54:40,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 01:54:40,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [145775394] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:40,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:54:40,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 01:54:40,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498432396] [2022-11-03 01:54:40,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:40,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:40,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:40,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:40,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:54:40,723 INFO L87 Difference]: Start difference. First operand 2203 states and 2799 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:54:41,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:41,202 INFO L93 Difference]: Finished difference Result 5356 states and 6813 transitions. [2022-11-03 01:54:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:54:41,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 01:54:41,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:41,210 INFO L225 Difference]: With dead ends: 5356 [2022-11-03 01:54:41,210 INFO L226 Difference]: Without dead ends: 3626 [2022-11-03 01:54:41,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 899 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:54:41,213 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 124 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:41,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 531 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 35 Unchecked, 0.0s Time] [2022-11-03 01:54:41,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2022-11-03 01:54:41,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 2203. [2022-11-03 01:54:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.252894858730894) internal successors, (2705), 2159 states have internal predecessors, (2705), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 01:54:41,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2789 transitions. [2022-11-03 01:54:41,555 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2789 transitions. Word has length 261 [2022-11-03 01:54:41,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:41,556 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2789 transitions. [2022-11-03 01:54:41,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:54:41,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2789 transitions. [2022-11-03 01:54:41,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:54:41,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:41,560 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:41,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (79)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:41,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:41,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:41,969 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:41,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:41,970 INFO L85 PathProgramCache]: Analyzing trace with hash 167937822, now seen corresponding path program 1 times [2022-11-03 01:54:41,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:41,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009272653] [2022-11-03 01:54:41,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:41,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:41,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:41,972 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:41,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-03 01:54:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:42,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:54:42,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 01:54:43,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:43,195 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:43,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009272653] [2022-11-03 01:54:43,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009272653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:43,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [225553060] [2022-11-03 01:54:43,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:43,196 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:54:43,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:54:43,197 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:54:43,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (81)] Waiting until timeout for monitored process [2022-11-03 01:54:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:44,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:54:44,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 01:54:44,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 01:54:44,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [225553060] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:44,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:54:44,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 01:54:44,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022792910] [2022-11-03 01:54:44,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:44,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:44,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:44,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:44,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:54:44,782 INFO L87 Difference]: Start difference. First operand 2203 states and 2789 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:54:45,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:45,286 INFO L93 Difference]: Finished difference Result 5344 states and 6767 transitions. [2022-11-03 01:54:45,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:54:45,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 01:54:45,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:45,291 INFO L225 Difference]: With dead ends: 5344 [2022-11-03 01:54:45,291 INFO L226 Difference]: Without dead ends: 3618 [2022-11-03 01:54:45,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 900 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:54:45,294 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 179 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:45,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 747 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 78 Unchecked, 0.0s Time] [2022-11-03 01:54:45,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2022-11-03 01:54:45,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 2203. [2022-11-03 01:54:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.2482630847614637) internal successors, (2695), 2159 states have internal predecessors, (2695), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 01:54:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2779 transitions. [2022-11-03 01:54:45,555 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2779 transitions. Word has length 261 [2022-11-03 01:54:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:45,556 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2779 transitions. [2022-11-03 01:54:45,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:54:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2779 transitions. [2022-11-03 01:54:45,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:54:45,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:45,560 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:45,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (81)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:45,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:45,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:45,969 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:45,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1772644192, now seen corresponding path program 1 times [2022-11-03 01:54:45,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:45,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675468760] [2022-11-03 01:54:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:45,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:45,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:45,977 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:45,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-03 01:54:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:46,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:54:46,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 01:54:47,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:47,414 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:47,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675468760] [2022-11-03 01:54:47,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675468760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:47,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2022302964] [2022-11-03 01:54:47,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:47,415 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:54:47,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:54:47,416 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:54:47,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (83)] Waiting until timeout for monitored process [2022-11-03 01:54:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:48,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:54:48,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 01:54:48,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 01:54:49,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2022302964] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:49,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:54:49,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 01:54:49,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754940158] [2022-11-03 01:54:49,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:49,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:49,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:49,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:49,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:54:49,060 INFO L87 Difference]: Start difference. First operand 2203 states and 2779 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:54:49,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:49,438 INFO L93 Difference]: Finished difference Result 5252 states and 6641 transitions. [2022-11-03 01:54:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:54:49,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 01:54:49,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:49,443 INFO L225 Difference]: With dead ends: 5252 [2022-11-03 01:54:49,444 INFO L226 Difference]: Without dead ends: 3530 [2022-11-03 01:54:49,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 899 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:54:49,447 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 118 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:49,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 539 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-11-03 01:54:49,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3530 states. [2022-11-03 01:54:49,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3530 to 2203. [2022-11-03 01:54:49,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.2436313107920334) internal successors, (2685), 2159 states have internal predecessors, (2685), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 01:54:49,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2769 transitions. [2022-11-03 01:54:49,735 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2769 transitions. Word has length 261 [2022-11-03 01:54:49,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:49,736 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2769 transitions. [2022-11-03 01:54:49,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:54:49,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2769 transitions. [2022-11-03 01:54:49,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:54:49,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:49,739 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:49,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:49,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (83)] Ended with exit code 0 [2022-11-03 01:54:50,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:54:50,140 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:50,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:50,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1936046882, now seen corresponding path program 1 times [2022-11-03 01:54:50,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:50,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942302573] [2022-11-03 01:54:50,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:50,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:50,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:50,142 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:50,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-03 01:54:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:50,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:54:50,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 01:54:51,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:51,450 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:51,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942302573] [2022-11-03 01:54:51,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942302573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:51,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1790757939] [2022-11-03 01:54:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:51,451 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:54:51,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:54:51,452 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:54:51,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (85)] Waiting until timeout for monitored process [2022-11-03 01:54:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:52,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:54:52,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 01:54:52,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:53,116 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 01:54:53,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1790757939] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:53,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:54:53,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 01:54:53,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077354155] [2022-11-03 01:54:53,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:53,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:53,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:53,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:53,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:54:53,118 INFO L87 Difference]: Start difference. First operand 2203 states and 2769 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:54:53,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:53,418 INFO L93 Difference]: Finished difference Result 5200 states and 6546 transitions. [2022-11-03 01:54:53,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:54:53,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 01:54:53,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:53,422 INFO L225 Difference]: With dead ends: 5200 [2022-11-03 01:54:53,422 INFO L226 Difference]: Without dead ends: 3482 [2022-11-03 01:54:53,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 899 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:54:53,424 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 117 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:53,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 547 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-11-03 01:54:53,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2022-11-03 01:54:53,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 2203. [2022-11-03 01:54:53,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.238999536822603) internal successors, (2675), 2159 states have internal predecessors, (2675), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 01:54:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2759 transitions. [2022-11-03 01:54:53,664 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2759 transitions. Word has length 261 [2022-11-03 01:54:53,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:53,665 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2759 transitions. [2022-11-03 01:54:53,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:54:53,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2759 transitions. [2022-11-03 01:54:53,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:54:53,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:53,670 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:53,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:53,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (85)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:54,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:54:54,085 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:54,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1034064220, now seen corresponding path program 1 times [2022-11-03 01:54:54,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:54,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748378618] [2022-11-03 01:54:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:54,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:54,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:54,089 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:54,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-03 01:54:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:54,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:54:54,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 01:54:55,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:55,407 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:55,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748378618] [2022-11-03 01:54:55,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748378618] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:55,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [37640474] [2022-11-03 01:54:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:55,408 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:54:55,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:54:55,409 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:54:55,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (87)] Waiting until timeout for monitored process [2022-11-03 01:54:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:56,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:54:56,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 01:54:57,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 01:54:57,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [37640474] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:57,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:54:57,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 01:54:57,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139456207] [2022-11-03 01:54:57,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:57,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:54:57,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:54:57,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:54:57,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:54:57,277 INFO L87 Difference]: Start difference. First operand 2203 states and 2759 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:54:57,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:57,686 INFO L93 Difference]: Finished difference Result 5148 states and 6460 transitions. [2022-11-03 01:54:57,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:54:57,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 01:54:57,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:57,690 INFO L225 Difference]: With dead ends: 5148 [2022-11-03 01:54:57,690 INFO L226 Difference]: Without dead ends: 3434 [2022-11-03 01:54:57,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 899 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:54:57,692 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 114 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:57,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 547 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-11-03 01:54:57,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-11-03 01:54:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 2203. [2022-11-03 01:54:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.2343677628531728) internal successors, (2665), 2159 states have internal predecessors, (2665), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 01:54:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2749 transitions. [2022-11-03 01:54:57,971 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2749 transitions. Word has length 261 [2022-11-03 01:54:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:57,971 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2749 transitions. [2022-11-03 01:54:57,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:54:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2749 transitions. [2022-11-03 01:54:57,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:54:57,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:57,975 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:57,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (87)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:58,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:58,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:54:58,376 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:58,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:58,376 INFO L85 PathProgramCache]: Analyzing trace with hash -793824474, now seen corresponding path program 1 times [2022-11-03 01:54:58,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:54:58,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725417858] [2022-11-03 01:54:58,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:58,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:54:58,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:54:58,378 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:54:58,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-03 01:54:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:58,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:54:58,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:59,601 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 01:54:59,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:59,697 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:54:59,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725417858] [2022-11-03 01:54:59,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725417858] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:59,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [605850715] [2022-11-03 01:54:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:59,698 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:54:59,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:54:59,701 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:54:59,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (89)] Waiting until timeout for monitored process [2022-11-03 01:55:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:00,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:55:00,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 01:55:01,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 01:55:01,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [605850715] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:01,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:55:01,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 01:55:01,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509232162] [2022-11-03 01:55:01,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:01,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:55:01,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:01,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:55:01,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:55:01,589 INFO L87 Difference]: Start difference. First operand 2203 states and 2749 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:55:01,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:01,888 INFO L93 Difference]: Finished difference Result 5096 states and 6374 transitions. [2022-11-03 01:55:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:55:01,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 01:55:01,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:01,892 INFO L225 Difference]: With dead ends: 5096 [2022-11-03 01:55:01,892 INFO L226 Difference]: Without dead ends: 3386 [2022-11-03 01:55:01,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 899 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:01,894 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 111 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:01,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 551 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 40 Unchecked, 0.0s Time] [2022-11-03 01:55:01,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2022-11-03 01:55:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2203. [2022-11-03 01:55:02,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.2297359888837425) internal successors, (2655), 2159 states have internal predecessors, (2655), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 01:55:02,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2739 transitions. [2022-11-03 01:55:02,073 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2739 transitions. Word has length 261 [2022-11-03 01:55:02,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:02,073 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2739 transitions. [2022-11-03 01:55:02,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:55:02,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2739 transitions. [2022-11-03 01:55:02,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:55:02,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:02,077 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:02,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Ended with exit code 0 [2022-11-03 01:55:02,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (89)] Ended with exit code 0 [2022-11-03 01:55:02,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:55:02,489 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:02,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:02,489 INFO L85 PathProgramCache]: Analyzing trace with hash 940279976, now seen corresponding path program 1 times [2022-11-03 01:55:02,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:02,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64544968] [2022-11-03 01:55:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:02,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:02,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:02,492 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:02,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-03 01:55:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:03,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:55:03,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 01:55:03,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:03,718 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:03,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64544968] [2022-11-03 01:55:03,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64544968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:03,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1631932641] [2022-11-03 01:55:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:03,719 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:55:03,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:55:03,720 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:55:03,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (91)] Waiting until timeout for monitored process [2022-11-03 01:55:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:04,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 01:55:04,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 147 proven. 84 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:55:06,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:06,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1631932641] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:06,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960867741] [2022-11-03 01:55:06,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:06,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:06,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:06,781 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:55:06,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-11-03 01:55:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:07,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:55:07,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 13 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 01:55:08,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:08,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960867741] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:08,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:55:08,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 7] total 24 [2022-11-03 01:55:08,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631872110] [2022-11-03 01:55:08,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:55:08,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 01:55:08,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:08,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 01:55:08,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1020, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 01:55:08,677 INFO L87 Difference]: Start difference. First operand 2203 states and 2739 transitions. Second operand has 24 states, 24 states have (on average 20.708333333333332) internal successors, (497), 24 states have internal predecessors, (497), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 01:55:23,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:23,934 INFO L93 Difference]: Finished difference Result 15450 states and 19115 transitions. [2022-11-03 01:55:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-03 01:55:23,934 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 20.708333333333332) internal successors, (497), 24 states have internal predecessors, (497), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 261 [2022-11-03 01:55:23,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:23,946 INFO L225 Difference]: With dead ends: 15450 [2022-11-03 01:55:23,946 INFO L226 Difference]: Without dead ends: 13297 [2022-11-03 01:55:23,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1287 GetRequests, 1157 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 4698 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=3613, Invalid=13679, Unknown=0, NotChecked=0, Total=17292 [2022-11-03 01:55:23,951 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 7069 mSDsluCounter, 6869 mSDsCounter, 0 mSdLazyCounter, 2156 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7075 SdHoareTripleChecker+Valid, 7389 SdHoareTripleChecker+Invalid, 4108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1577 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:23,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7075 Valid, 7389 Invalid, 4108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2156 Invalid, 0 Unknown, 1577 Unchecked, 2.4s Time] [2022-11-03 01:55:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13297 states. [2022-11-03 01:55:24,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13297 to 6254. [2022-11-03 01:55:24,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6254 states, 6165 states have (on average 1.2149229521492295) internal successors, (7490), 6165 states have internal predecessors, (7490), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2022-11-03 01:55:24,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6254 states to 6254 states and 7664 transitions. [2022-11-03 01:55:24,467 INFO L78 Accepts]: Start accepts. Automaton has 6254 states and 7664 transitions. Word has length 261 [2022-11-03 01:55:24,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:24,467 INFO L495 AbstractCegarLoop]: Abstraction has 6254 states and 7664 transitions. [2022-11-03 01:55:24,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 20.708333333333332) internal successors, (497), 24 states have internal predecessors, (497), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 01:55:24,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6254 states and 7664 transitions. [2022-11-03 01:55:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:55:24,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:24,475 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:24,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (91)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:24,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:24,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (90)] Ended with exit code 0 [2022-11-03 01:55:25,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:25,085 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:25,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:25,086 INFO L85 PathProgramCache]: Analyzing trace with hash -948208394, now seen corresponding path program 1 times [2022-11-03 01:55:25,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:25,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391015048] [2022-11-03 01:55:25,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:25,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:25,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:25,088 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:25,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2022-11-03 01:55:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:25,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:55:25,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-03 01:55:26,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:26,460 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:26,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391015048] [2022-11-03 01:55:26,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391015048] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:26,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [342554164] [2022-11-03 01:55:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:26,461 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:55:26,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:55:26,464 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:55:26,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (94)] Waiting until timeout for monitored process [2022-11-03 01:55:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:27,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 01:55:27,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 01:55:30,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:30,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [342554164] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:30,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578695203] [2022-11-03 01:55:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:30,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:30,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:30,588 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:55:30,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-11-03 01:55:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:31,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 01:55:31,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 133 proven. 23 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-03 01:55:33,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:33,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578695203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:33,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:55:33,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20, 13] total 36 [2022-11-03 01:55:33,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818090917] [2022-11-03 01:55:33,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:55:33,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-03 01:55:33,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:33,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-03 01:55:33,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1956, Unknown=0, NotChecked=0, Total=2070 [2022-11-03 01:55:33,632 INFO L87 Difference]: Start difference. First operand 6254 states and 7664 transitions. Second operand has 36 states, 36 states have (on average 17.416666666666668) internal successors, (627), 36 states have internal predecessors, (627), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-03 01:55:42,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:42,367 INFO L93 Difference]: Finished difference Result 23220 states and 28373 transitions. [2022-11-03 01:55:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-03 01:55:42,368 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 17.416666666666668) internal successors, (627), 36 states have internal predecessors, (627), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 261 [2022-11-03 01:55:42,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:42,380 INFO L225 Difference]: With dead ends: 23220 [2022-11-03 01:55:42,380 INFO L226 Difference]: Without dead ends: 17554 [2022-11-03 01:55:42,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1052 GetRequests, 956 SyntacticMatches, 6 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1520 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=573, Invalid=7799, Unknown=0, NotChecked=0, Total=8372 [2022-11-03 01:55:42,384 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 963 mSDsluCounter, 13863 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 14348 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2080 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:42,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 14348 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 762 Invalid, 0 Unknown, 2080 Unchecked, 0.8s Time] [2022-11-03 01:55:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17554 states. [2022-11-03 01:55:43,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17554 to 10802. [2022-11-03 01:55:43,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10802 states, 10635 states have (on average 1.2164551010813351) internal successors, (12937), 10635 states have internal predecessors, (12937), 165 states have call successors, (165), 1 states have call predecessors, (165), 1 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2022-11-03 01:55:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10802 states to 10802 states and 13267 transitions. [2022-11-03 01:55:43,423 INFO L78 Accepts]: Start accepts. Automaton has 10802 states and 13267 transitions. Word has length 261 [2022-11-03 01:55:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:43,424 INFO L495 AbstractCegarLoop]: Abstraction has 10802 states and 13267 transitions. [2022-11-03 01:55:43,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 17.416666666666668) internal successors, (627), 36 states have internal predecessors, (627), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-03 01:55:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand 10802 states and 13267 transitions. [2022-11-03 01:55:43,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:55:43,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:43,434 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:43,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (93)] Ended with exit code 0 [2022-11-03 01:55:43,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (94)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:43,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-11-03 01:55:44,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:44,049 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:44,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:44,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2064586616, now seen corresponding path program 2 times [2022-11-03 01:55:44,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:44,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016385510] [2022-11-03 01:55:44,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 01:55:44,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:44,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:44,052 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:44,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2022-11-03 01:55:44,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-03 01:55:44,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:55:44,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:55:44,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 01:55:45,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:45,887 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:45,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016385510] [2022-11-03 01:55:45,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016385510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:45,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [690744728] [2022-11-03 01:55:45,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 01:55:45,888 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:55:45,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:55:45,889 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:55:45,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (97)] Waiting until timeout for monitored process [2022-11-03 01:55:46,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-03 01:55:46,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:55:46,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:55:46,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 01:55:47,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:48,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [690744728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:48,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451946354] [2022-11-03 01:55:48,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 01:55:48,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:48,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:48,276 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:55:48,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-11-03 01:55:48,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-03 01:55:48,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:55:48,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:55:48,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 01:55:50,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:50,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451946354] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:50,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:55:50,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 13 [2022-11-03 01:55:50,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105906450] [2022-11-03 01:55:50,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:55:50,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 01:55:50,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 01:55:50,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:55:50,449 INFO L87 Difference]: Start difference. First operand 10802 states and 13267 transitions. Second operand has 13 states, 13 states have (on average 21.615384615384617) internal successors, (281), 13 states have internal predecessors, (281), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:55:56,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:56,751 INFO L93 Difference]: Finished difference Result 41495 states and 50883 transitions. [2022-11-03 01:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 01:55:56,752 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 21.615384615384617) internal successors, (281), 13 states have internal predecessors, (281), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 01:55:56,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:56,775 INFO L225 Difference]: With dead ends: 41495 [2022-11-03 01:55:56,775 INFO L226 Difference]: Without dead ends: 31032 [2022-11-03 01:55:56,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 845 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2022-11-03 01:55:56,782 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 3226 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3226 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:56,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3226 Valid, 1358 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:55:56,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31032 states. [2022-11-03 01:55:57,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31032 to 10660. [2022-11-03 01:55:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10660 states, 10493 states have (on average 1.2030877728009148) internal successors, (12624), 10493 states have internal predecessors, (12624), 165 states have call successors, (165), 1 states have call predecessors, (165), 1 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2022-11-03 01:55:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10660 states to 10660 states and 12954 transitions. [2022-11-03 01:55:57,854 INFO L78 Accepts]: Start accepts. Automaton has 10660 states and 12954 transitions. Word has length 261 [2022-11-03 01:55:57,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:57,855 INFO L495 AbstractCegarLoop]: Abstraction has 10660 states and 12954 transitions. [2022-11-03 01:55:57,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 21.615384615384617) internal successors, (281), 13 states have internal predecessors, (281), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:55:57,855 INFO L276 IsEmpty]: Start isEmpty. Operand 10660 states and 12954 transitions. [2022-11-03 01:55:57,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:55:57,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:57,860 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:57,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:58,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (97)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:58,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-11-03 01:55:58,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:58,461 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:58,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:58,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1110727668, now seen corresponding path program 1 times [2022-11-03 01:55:58,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:58,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027652155] [2022-11-03 01:55:58,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:58,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:58,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:58,463 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:58,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2022-11-03 01:55:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:59,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 01:55:59,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-03 01:56:00,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:00,319 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:00,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027652155] [2022-11-03 01:56:00,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027652155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:00,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1543157735] [2022-11-03 01:56:00,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:00,320 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:56:00,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:56:00,321 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:56:00,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (100)] Waiting until timeout for monitored process [2022-11-03 01:56:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:01,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 01:56:01,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 01:56:04,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:04,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1543157735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:04,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559287570] [2022-11-03 01:56:04,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:04,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:04,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:04,814 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:04,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-11-03 01:56:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:05,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:56:05,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:07,484 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 20 proven. 22 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 01:56:07,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:07,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559287570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:07,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:56:07,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20, 7] total 35 [2022-11-03 01:56:07,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149938593] [2022-11-03 01:56:07,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:56:07,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-03 01:56:07,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:07,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-03 01:56:07,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1869, Unknown=0, NotChecked=0, Total=1980 [2022-11-03 01:56:07,802 INFO L87 Difference]: Start difference. First operand 10660 states and 12954 transitions. Second operand has 35 states, 35 states have (on average 14.771428571428572) internal successors, (517), 35 states have internal predecessors, (517), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 01:56:32,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:32,645 INFO L93 Difference]: Finished difference Result 40748 states and 49406 transitions. [2022-11-03 01:56:32,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-11-03 01:56:32,653 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 14.771428571428572) internal successors, (517), 35 states have internal predecessors, (517), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 261 [2022-11-03 01:56:32,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:32,675 INFO L225 Difference]: With dead ends: 40748 [2022-11-03 01:56:32,675 INFO L226 Difference]: Without dead ends: 30807 [2022-11-03 01:56:32,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1018 GetRequests, 841 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9197 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=3484, Invalid=28378, Unknown=0, NotChecked=0, Total=31862 [2022-11-03 01:56:32,684 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 7050 mSDsluCounter, 15541 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7050 SdHoareTripleChecker+Valid, 16201 SdHoareTripleChecker+Invalid, 6908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3607 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:32,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7050 Valid, 16201 Invalid, 6908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2897 Invalid, 0 Unknown, 3607 Unchecked, 3.0s Time] [2022-11-03 01:56:32,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30807 states. [2022-11-03 01:56:33,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30807 to 8201. [2022-11-03 01:56:33,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8201 states, 8079 states have (on average 1.2053471964352023) internal successors, (9738), 8079 states have internal predecessors, (9738), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2022-11-03 01:56:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8201 states to 8201 states and 9978 transitions. [2022-11-03 01:56:33,605 INFO L78 Accepts]: Start accepts. Automaton has 8201 states and 9978 transitions. Word has length 261 [2022-11-03 01:56:33,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:33,605 INFO L495 AbstractCegarLoop]: Abstraction has 8201 states and 9978 transitions. [2022-11-03 01:56:33,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 14.771428571428572) internal successors, (517), 35 states have internal predecessors, (517), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 01:56:33,606 INFO L276 IsEmpty]: Start isEmpty. Operand 8201 states and 9978 transitions. [2022-11-03 01:56:33,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:56:33,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:33,611 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:33,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-11-03 01:56:33,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (100)] Ended with exit code 0 [2022-11-03 01:56:34,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Ended with exit code 0 [2022-11-03 01:56:34,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:34,212 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:34,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:34,212 INFO L85 PathProgramCache]: Analyzing trace with hash -314930640, now seen corresponding path program 1 times [2022-11-03 01:56:34,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:34,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365640824] [2022-11-03 01:56:34,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:34,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:34,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:34,214 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:34,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2022-11-03 01:56:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:34,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 01:56:34,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 01:56:35,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 01:56:35,680 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:35,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365640824] [2022-11-03 01:56:35,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365640824] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:35,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:56:35,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-03 01:56:35,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142919236] [2022-11-03 01:56:35,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:56:35,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:56:35,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:35,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:56:35,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:56:35,682 INFO L87 Difference]: Start difference. First operand 8201 states and 9978 transitions. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:56:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:36,814 INFO L93 Difference]: Finished difference Result 18114 states and 22051 transitions. [2022-11-03 01:56:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:56:36,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 01:56:36,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:36,827 INFO L225 Difference]: With dead ends: 18114 [2022-11-03 01:56:36,827 INFO L226 Difference]: Without dead ends: 10805 [2022-11-03 01:56:36,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 510 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:56:36,834 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 91 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:36,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 808 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 72 Unchecked, 0.0s Time] [2022-11-03 01:56:36,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10805 states. [2022-11-03 01:56:37,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10805 to 8013. [2022-11-03 01:56:37,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8013 states, 7891 states have (on average 1.2022557343809404) internal successors, (9487), 7891 states have internal predecessors, (9487), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2022-11-03 01:56:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8013 states to 8013 states and 9727 transitions. [2022-11-03 01:56:37,578 INFO L78 Accepts]: Start accepts. Automaton has 8013 states and 9727 transitions. Word has length 261 [2022-11-03 01:56:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:37,578 INFO L495 AbstractCegarLoop]: Abstraction has 8013 states and 9727 transitions. [2022-11-03 01:56:37,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 01:56:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 8013 states and 9727 transitions. [2022-11-03 01:56:37,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:56:37,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:37,584 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:37,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (102)] Ended with exit code 0 [2022-11-03 01:56:37,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:37,784 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:37,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:37,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1557209804, now seen corresponding path program 1 times [2022-11-03 01:56:37,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:37,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966791509] [2022-11-03 01:56:37,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:37,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:37,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:37,788 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:37,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2022-11-03 01:56:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:38,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:38,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 155 proven. 76 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:56:38,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 83 proven. 76 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 01:56:39,406 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:39,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966791509] [2022-11-03 01:56:39,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966791509] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:56:39,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [263147739] [2022-11-03 01:56:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:39,406 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:56:39,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:56:39,407 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:56:39,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (104)] Waiting until timeout for monitored process [2022-11-03 01:56:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:40,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:40,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 155 proven. 76 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:56:41,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 83 proven. 76 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 01:56:41,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [263147739] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:56:41,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977478208] [2022-11-03 01:56:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:41,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:41,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:41,493 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:41,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-11-03 01:56:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:42,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 01:56:42,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 155 proven. 76 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:56:42,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:43,204 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 83 proven. 76 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 01:56:43,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977478208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:56:43,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 01:56:43,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 14 [2022-11-03 01:56:43,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839193006] [2022-11-03 01:56:43,205 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 01:56:43,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 01:56:43,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:43,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 01:56:43,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:56:43,207 INFO L87 Difference]: Start difference. First operand 8013 states and 9727 transitions. Second operand has 14 states, 14 states have (on average 27.714285714285715) internal successors, (388), 14 states have internal predecessors, (388), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-03 01:56:45,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:56:45,877 INFO L93 Difference]: Finished difference Result 32221 states and 38582 transitions. [2022-11-03 01:56:45,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 01:56:45,877 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 27.714285714285715) internal successors, (388), 14 states have internal predecessors, (388), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 261 [2022-11-03 01:56:45,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:56:45,907 INFO L225 Difference]: With dead ends: 32221 [2022-11-03 01:56:45,907 INFO L226 Difference]: Without dead ends: 25100 [2022-11-03 01:56:45,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1573 GetRequests, 1548 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2022-11-03 01:56:45,916 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1401 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:56:45,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 2322 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:56:45,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25100 states. [2022-11-03 01:56:46,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25100 to 9928. [2022-11-03 01:56:46,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9928 states, 9803 states have (on average 1.1909619504233397) internal successors, (11675), 9803 states have internal predecessors, (11675), 123 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2022-11-03 01:56:46,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 11921 transitions. [2022-11-03 01:56:46,748 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 11921 transitions. Word has length 261 [2022-11-03 01:56:46,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:56:46,748 INFO L495 AbstractCegarLoop]: Abstraction has 9928 states and 11921 transitions. [2022-11-03 01:56:46,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 27.714285714285715) internal successors, (388), 14 states have internal predecessors, (388), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-03 01:56:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 11921 transitions. [2022-11-03 01:56:46,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:56:46,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:56:46,753 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:56:46,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (104)] Ended with exit code 0 [2022-11-03 01:56:46,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-11-03 01:56:47,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Ended with exit code 0 [2022-11-03 01:56:47,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:56:47,354 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:56:47,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:56:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1055137952, now seen corresponding path program 1 times [2022-11-03 01:56:47,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:56:47,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529198739] [2022-11-03 01:56:47,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:47,356 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:56:47,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:56:47,357 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:56:47,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2022-11-03 01:56:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:47,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:56:47,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 189 proven. 42 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:56:49,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:49,497 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:56:49,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529198739] [2022-11-03 01:56:49,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529198739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:49,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [63441188] [2022-11-03 01:56:49,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:49,497 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:56:49,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:56:49,498 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:56:49,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (107)] Waiting until timeout for monitored process [2022-11-03 01:56:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:50,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-03 01:56:50,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 01:56:52,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:53,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [63441188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:53,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842654010] [2022-11-03 01:56:53,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:56:53,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:56:53,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:53,356 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:56:53,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-11-03 01:56:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:56:53,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 01:56:53,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:56:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 28 proven. 131 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 01:56:56,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:56:56,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842654010] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:56:56,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:56:56,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 20, 15] total 39 [2022-11-03 01:56:56,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094874648] [2022-11-03 01:56:56,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:56:56,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-03 01:56:56,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:56:56,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-03 01:56:56,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2147, Unknown=0, NotChecked=0, Total=2256 [2022-11-03 01:56:56,608 INFO L87 Difference]: Start difference. First operand 9928 states and 11921 transitions. Second operand has 39 states, 39 states have (on average 16.307692307692307) internal successors, (636), 39 states have internal predecessors, (636), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-03 01:57:21,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:21,649 INFO L93 Difference]: Finished difference Result 28443 states and 34395 transitions. [2022-11-03 01:57:21,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2022-11-03 01:57:21,650 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 16.307692307692307) internal successors, (636), 39 states have internal predecessors, (636), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 261 [2022-11-03 01:57:21,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:21,672 INFO L225 Difference]: With dead ends: 28443 [2022-11-03 01:57:21,672 INFO L226 Difference]: Without dead ends: 21591 [2022-11-03 01:57:21,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1217 GetRequests, 970 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19630 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=5334, Invalid=56418, Unknown=0, NotChecked=0, Total=61752 [2022-11-03 01:57:21,685 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 4803 mSDsluCounter, 12777 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 13220 SdHoareTripleChecker+Invalid, 7108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4100 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:21,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4809 Valid, 13220 Invalid, 7108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2557 Invalid, 0 Unknown, 4100 Unchecked, 3.0s Time] [2022-11-03 01:57:21,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21591 states. [2022-11-03 01:57:22,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21591 to 13827. [2022-11-03 01:57:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13827 states, 13651 states have (on average 1.186213464215076) internal successors, (16193), 13651 states have internal predecessors, (16193), 174 states have call successors, (174), 1 states have call predecessors, (174), 1 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2022-11-03 01:57:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13827 states to 13827 states and 16541 transitions. [2022-11-03 01:57:22,798 INFO L78 Accepts]: Start accepts. Automaton has 13827 states and 16541 transitions. Word has length 261 [2022-11-03 01:57:22,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:22,799 INFO L495 AbstractCegarLoop]: Abstraction has 13827 states and 16541 transitions. [2022-11-03 01:57:22,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 16.307692307692307) internal successors, (636), 39 states have internal predecessors, (636), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-03 01:57:22,799 INFO L276 IsEmpty]: Start isEmpty. Operand 13827 states and 16541 transitions. [2022-11-03 01:57:22,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:57:22,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:22,804 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:22,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (106)] Ended with exit code 0 [2022-11-03 01:57:23,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:23,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (107)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:23,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:57:23,405 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:23,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:23,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1650662498, now seen corresponding path program 1 times [2022-11-03 01:57:23,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:57:23,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739656887] [2022-11-03 01:57:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:23,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:57:23,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:57:23,407 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:57:23,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2022-11-03 01:57:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:23,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:57:23,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 185 proven. 46 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:57:25,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:25,438 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:57:25,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739656887] [2022-11-03 01:57:25,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739656887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:57:25,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1445226470] [2022-11-03 01:57:25,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:25,439 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:57:25,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:57:25,441 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:57:25,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (110)] Waiting until timeout for monitored process [2022-11-03 01:57:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:26,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:57:26,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 185 proven. 46 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:57:28,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:28,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1445226470] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:57:28,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889614293] [2022-11-03 01:57:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:28,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:28,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:28,535 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:28,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-11-03 01:57:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:29,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 01:57:29,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 40 proven. 119 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 01:57:30,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:30,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889614293] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:57:30,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:57:30,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 14] total 20 [2022-11-03 01:57:30,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686084542] [2022-11-03 01:57:30,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:57:30,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 01:57:30,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:57:30,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 01:57:30,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:57:30,780 INFO L87 Difference]: Start difference. First operand 13827 states and 16541 transitions. Second operand has 20 states, 20 states have (on average 20.8) internal successors, (416), 20 states have internal predecessors, (416), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 01:57:39,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:39,588 INFO L93 Difference]: Finished difference Result 40481 states and 48735 transitions. [2022-11-03 01:57:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-03 01:57:39,588 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 20.8) internal successors, (416), 20 states have internal predecessors, (416), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 261 [2022-11-03 01:57:39,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:39,610 INFO L225 Difference]: With dead ends: 40481 [2022-11-03 01:57:39,610 INFO L226 Difference]: Without dead ends: 30783 [2022-11-03 01:57:39,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1161 GetRequests, 1062 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2486 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1746, Invalid=8154, Unknown=0, NotChecked=0, Total=9900 [2022-11-03 01:57:39,615 INFO L413 NwaCegarLoop]: 983 mSDtfsCounter, 2324 mSDsluCounter, 10027 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2324 SdHoareTripleChecker+Valid, 11010 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1248 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:39,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2324 Valid, 11010 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1364 Invalid, 0 Unknown, 1248 Unchecked, 1.7s Time] [2022-11-03 01:57:39,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30783 states. [2022-11-03 01:57:40,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30783 to 13870. [2022-11-03 01:57:40,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13870 states, 13691 states have (on average 1.1855963771820903) internal successors, (16232), 13691 states have internal predecessors, (16232), 177 states have call successors, (177), 1 states have call predecessors, (177), 1 states have return successors, (177), 177 states have call predecessors, (177), 177 states have call successors, (177) [2022-11-03 01:57:40,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13870 states to 13870 states and 16586 transitions. [2022-11-03 01:57:40,971 INFO L78 Accepts]: Start accepts. Automaton has 13870 states and 16586 transitions. Word has length 261 [2022-11-03 01:57:40,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:40,971 INFO L495 AbstractCegarLoop]: Abstraction has 13870 states and 16586 transitions. [2022-11-03 01:57:40,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 20.8) internal successors, (416), 20 states have internal predecessors, (416), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 01:57:40,971 INFO L276 IsEmpty]: Start isEmpty. Operand 13870 states and 16586 transitions. [2022-11-03 01:57:40,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:57:40,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:40,977 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:40,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (109)] Ended with exit code 0 [2022-11-03 01:57:41,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-11-03 01:57:41,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (110)] Ended with exit code 0 [2022-11-03 01:57:41,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:57:41,581 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:57:41,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:41,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1701035940, now seen corresponding path program 1 times [2022-11-03 01:57:41,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:57:41,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098368711] [2022-11-03 01:57:41,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:41,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:57:41,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:57:41,583 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:57:41,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2022-11-03 01:57:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:42,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:57:42,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 181 proven. 50 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:57:43,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:43,691 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:57:43,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098368711] [2022-11-03 01:57:43,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098368711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:57:43,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [737414204] [2022-11-03 01:57:43,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:43,692 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:57:43,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:57:43,693 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:57:43,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (113)] Waiting until timeout for monitored process [2022-11-03 01:57:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:44,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:57:44,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 181 proven. 50 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:57:46,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:47,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [737414204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:57:47,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325505612] [2022-11-03 01:57:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:47,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:57:47,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:47,032 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:57:47,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-11-03 01:57:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:47,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:57:47,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:57:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 28 proven. 14 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 01:57:49,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:57:49,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325505612] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:57:49,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:57:49,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2022-11-03 01:57:49,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456555545] [2022-11-03 01:57:49,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:57:49,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 01:57:49,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:57:49,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 01:57:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:57:49,417 INFO L87 Difference]: Start difference. First operand 13870 states and 16586 transitions. Second operand has 13 states, 13 states have (on average 27.0) internal successors, (351), 13 states have internal predecessors, (351), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 01:57:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:58,736 INFO L93 Difference]: Finished difference Result 37307 states and 45027 transitions. [2022-11-03 01:57:58,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 01:57:58,815 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.0) internal successors, (351), 13 states have internal predecessors, (351), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 261 [2022-11-03 01:57:58,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:58,834 INFO L225 Difference]: With dead ends: 37307 [2022-11-03 01:57:58,834 INFO L226 Difference]: Without dead ends: 23896 [2022-11-03 01:57:58,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1129 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1202, Invalid=3490, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 01:57:58,841 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 2375 mSDsluCounter, 3420 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 4147 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:58,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2375 Valid, 4147 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 01:57:58,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23896 states. [2022-11-03 01:58:00,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23896 to 9980. [2022-11-03 01:58:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9980 states, 9837 states have (on average 1.185422384873437) internal successors, (11661), 9837 states have internal predecessors, (11661), 141 states have call successors, (141), 1 states have call predecessors, (141), 1 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2022-11-03 01:58:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9980 states to 9980 states and 11943 transitions. [2022-11-03 01:58:00,098 INFO L78 Accepts]: Start accepts. Automaton has 9980 states and 11943 transitions. Word has length 261 [2022-11-03 01:58:00,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:00,098 INFO L495 AbstractCegarLoop]: Abstraction has 9980 states and 11943 transitions. [2022-11-03 01:58:00,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.0) internal successors, (351), 13 states have internal predecessors, (351), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 01:58:00,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9980 states and 11943 transitions. [2022-11-03 01:58:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:58:00,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:00,103 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:00,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:00,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (112)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:00,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (113)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:00,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:58:00,704 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:00,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:00,704 INFO L85 PathProgramCache]: Analyzing trace with hash 358942312, now seen corresponding path program 1 times [2022-11-03 01:58:00,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:58:00,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956075592] [2022-11-03 01:58:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:00,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:58:00,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:58:00,707 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:58:00,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (115)] Waiting until timeout for monitored process [2022-11-03 01:58:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:01,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:58:01,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 177 proven. 54 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:58:02,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:02,940 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:58:02,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956075592] [2022-11-03 01:58:02,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956075592] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:02,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [517012654] [2022-11-03 01:58:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:02,941 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:58:02,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:58:02,943 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:58:02,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (116)] Waiting until timeout for monitored process [2022-11-03 01:58:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:04,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:58:04,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 177 proven. 54 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:58:05,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:05,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [517012654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:05,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411149053] [2022-11-03 01:58:05,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:05,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:05,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:05,812 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:05,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-11-03 01:58:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:06,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:58:06,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 01:58:09,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:09,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411149053] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:09,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:58:09,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2022-11-03 01:58:09,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284430402] [2022-11-03 01:58:09,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:58:09,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 01:58:09,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:58:09,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 01:58:09,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:58:09,461 INFO L87 Difference]: Start difference. First operand 9980 states and 11943 transitions. Second operand has 13 states, 13 states have (on average 27.53846153846154) internal successors, (358), 13 states have internal predecessors, (358), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 01:58:19,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:19,486 INFO L93 Difference]: Finished difference Result 46861 states and 56186 transitions. [2022-11-03 01:58:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 01:58:19,486 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.53846153846154) internal successors, (358), 13 states have internal predecessors, (358), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 261 [2022-11-03 01:58:19,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:19,513 INFO L225 Difference]: With dead ends: 46861 [2022-11-03 01:58:19,513 INFO L226 Difference]: Without dead ends: 37206 [2022-11-03 01:58:19,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1129 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1207, Invalid=3485, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 01:58:19,520 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 2278 mSDsluCounter, 3495 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 4268 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:19,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 4268 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 01:58:19,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37206 states. [2022-11-03 01:58:20,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37206 to 10170. [2022-11-03 01:58:20,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10170 states, 10027 states have (on average 1.183205345566969) internal successors, (11864), 10027 states have internal predecessors, (11864), 141 states have call successors, (141), 1 states have call predecessors, (141), 1 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2022-11-03 01:58:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10170 states to 10170 states and 12146 transitions. [2022-11-03 01:58:20,605 INFO L78 Accepts]: Start accepts. Automaton has 10170 states and 12146 transitions. Word has length 261 [2022-11-03 01:58:20,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:20,605 INFO L495 AbstractCegarLoop]: Abstraction has 10170 states and 12146 transitions. [2022-11-03 01:58:20,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.53846153846154) internal successors, (358), 13 states have internal predecessors, (358), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 01:58:20,605 INFO L276 IsEmpty]: Start isEmpty. Operand 10170 states and 12146 transitions. [2022-11-03 01:58:20,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:58:20,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:20,609 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:20,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (115)] Ended with exit code 0 [2022-11-03 01:58:20,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:21,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (116)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:21,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:58:21,210 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:21,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:21,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1036680536, now seen corresponding path program 1 times [2022-11-03 01:58:21,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:58:21,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180680314] [2022-11-03 01:58:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:21,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:58:21,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:58:21,215 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:58:21,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (118)] Waiting until timeout for monitored process [2022-11-03 01:58:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:21,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:58:21,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 173 proven. 58 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:58:23,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:23,772 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:58:23,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180680314] [2022-11-03 01:58:23,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180680314] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:23,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1721765309] [2022-11-03 01:58:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:23,773 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:58:23,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:58:23,774 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:58:23,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (119)] Waiting until timeout for monitored process [2022-11-03 01:58:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:25,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:58:25,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 173 proven. 58 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:58:27,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:27,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1721765309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:27,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885039207] [2022-11-03 01:58:27,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:27,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:27,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:27,445 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:27,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-11-03 01:58:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:28,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 01:58:28,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 01:58:29,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:29,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885039207] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:29,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:58:29,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2022-11-03 01:58:29,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894090808] [2022-11-03 01:58:29,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:58:29,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 01:58:29,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:58:29,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 01:58:29,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:58:29,725 INFO L87 Difference]: Start difference. First operand 10170 states and 12146 transitions. Second operand has 13 states, 13 states have (on average 27.0) internal successors, (351), 13 states have internal predecessors, (351), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 01:58:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:40,173 INFO L93 Difference]: Finished difference Result 34593 states and 41684 transitions. [2022-11-03 01:58:40,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 01:58:40,174 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.0) internal successors, (351), 13 states have internal predecessors, (351), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 261 [2022-11-03 01:58:40,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:40,195 INFO L225 Difference]: With dead ends: 34593 [2022-11-03 01:58:40,195 INFO L226 Difference]: Without dead ends: 24742 [2022-11-03 01:58:40,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1129 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1202, Invalid=3490, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 01:58:40,202 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 2640 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2640 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:40,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2640 Valid, 3495 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 01:58:40,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24742 states. [2022-11-03 01:58:41,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24742 to 9580. [2022-11-03 01:58:41,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9580 states, 9437 states have (on average 1.1831090388894776) internal successors, (11165), 9437 states have internal predecessors, (11165), 141 states have call successors, (141), 1 states have call predecessors, (141), 1 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2022-11-03 01:58:41,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9580 states to 9580 states and 11447 transitions. [2022-11-03 01:58:41,343 INFO L78 Accepts]: Start accepts. Automaton has 9580 states and 11447 transitions. Word has length 261 [2022-11-03 01:58:41,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:41,344 INFO L495 AbstractCegarLoop]: Abstraction has 9580 states and 11447 transitions. [2022-11-03 01:58:41,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.0) internal successors, (351), 13 states have internal predecessors, (351), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 01:58:41,344 INFO L276 IsEmpty]: Start isEmpty. Operand 9580 states and 11447 transitions. [2022-11-03 01:58:41,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:58:41,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:41,348 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:41,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-11-03 01:58:41,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (118)] Forceful destruction successful, exit code 0 [2022-11-03 01:58:41,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (119)] Ended with exit code 0 [2022-11-03 01:58:41,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:58:41,950 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:41,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:41,950 INFO L85 PathProgramCache]: Analyzing trace with hash 479432044, now seen corresponding path program 1 times [2022-11-03 01:58:41,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:58:41,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340910671] [2022-11-03 01:58:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:41,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:58:41,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:58:41,953 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:58:41,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (121)] Waiting until timeout for monitored process [2022-11-03 01:58:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:42,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:58:42,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 169 proven. 62 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:58:44,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:44,633 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:58:44,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340910671] [2022-11-03 01:58:44,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340910671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:44,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [79868448] [2022-11-03 01:58:44,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:44,634 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:58:44,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:58:44,635 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:58:44,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (122)] Waiting until timeout for monitored process [2022-11-03 01:58:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:46,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:58:46,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 169 proven. 62 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:58:48,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:48,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [79868448] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:48,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291164558] [2022-11-03 01:58:48,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:48,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:58:48,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:48,502 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:58:48,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-11-03 01:58:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:49,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:58:49,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:58:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 01:58:51,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:58:51,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291164558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:58:51,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:58:51,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2022-11-03 01:58:51,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887549203] [2022-11-03 01:58:51,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:58:51,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 01:58:51,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:58:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 01:58:51,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:58:51,465 INFO L87 Difference]: Start difference. First operand 9580 states and 11447 transitions. Second operand has 13 states, 13 states have (on average 27.384615384615383) internal successors, (356), 13 states have internal predecessors, (356), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 01:59:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:02,486 INFO L93 Difference]: Finished difference Result 38246 states and 45673 transitions. [2022-11-03 01:59:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 01:59:02,487 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.384615384615383) internal successors, (356), 13 states have internal predecessors, (356), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 261 [2022-11-03 01:59:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:02,512 INFO L225 Difference]: With dead ends: 38246 [2022-11-03 01:59:02,512 INFO L226 Difference]: Without dead ends: 28969 [2022-11-03 01:59:02,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1129 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1207, Invalid=3485, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 01:59:02,520 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 2325 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 3542 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:02,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2325 Valid, 3542 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 01:59:02,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28969 states. [2022-11-03 01:59:03,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28969 to 9606. [2022-11-03 01:59:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9606 states, 9463 states have (on average 1.174363309732643) internal successors, (11113), 9463 states have internal predecessors, (11113), 141 states have call successors, (141), 1 states have call predecessors, (141), 1 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2022-11-03 01:59:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9606 states to 9606 states and 11395 transitions. [2022-11-03 01:59:03,552 INFO L78 Accepts]: Start accepts. Automaton has 9606 states and 11395 transitions. Word has length 261 [2022-11-03 01:59:03,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:03,553 INFO L495 AbstractCegarLoop]: Abstraction has 9606 states and 11395 transitions. [2022-11-03 01:59:03,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.384615384615383) internal successors, (356), 13 states have internal predecessors, (356), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 01:59:03,553 INFO L276 IsEmpty]: Start isEmpty. Operand 9606 states and 11395 transitions. [2022-11-03 01:59:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:59:03,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:03,557 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:59:03,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (121)] Ended with exit code 0 [2022-11-03 01:59:03,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (122)] Forceful destruction successful, exit code 0 [2022-11-03 01:59:03,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-11-03 01:59:04,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,123 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:04,161 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:04,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:04,161 INFO L85 PathProgramCache]: Analyzing trace with hash -89674836, now seen corresponding path program 1 times [2022-11-03 01:59:04,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:59:04,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139230258] [2022-11-03 01:59:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:04,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:59:04,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:59:04,167 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:59:04,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (124)] Waiting until timeout for monitored process [2022-11-03 01:59:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:04,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 01:59:04,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 165 proven. 66 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:59:05,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:06,367 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:59:06,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139230258] [2022-11-03 01:59:06,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139230258] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:59:06,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1052818517] [2022-11-03 01:59:06,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:06,368 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:59:06,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:59:06,369 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:59:06,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (125)] Waiting until timeout for monitored process [2022-11-03 01:59:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:07,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 01:59:07,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 165 proven. 66 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:59:08,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:09,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1052818517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:59:09,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389256246] [2022-11-03 01:59:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:09,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:09,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:09,401 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:09,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-11-03 01:59:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:09,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:59:09,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:12,249 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 01:59:12,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:12,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389256246] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:59:12,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:59:12,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2022-11-03 01:59:12,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576658603] [2022-11-03 01:59:12,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:59:12,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 01:59:12,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:59:12,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 01:59:12,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:59:12,431 INFO L87 Difference]: Start difference. First operand 9606 states and 11395 transitions. Second operand has 13 states, 13 states have (on average 27.153846153846153) internal successors, (353), 13 states have internal predecessors, (353), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 01:59:23,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:23,510 INFO L93 Difference]: Finished difference Result 29590 states and 35322 transitions. [2022-11-03 01:59:23,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 01:59:23,511 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.153846153846153) internal successors, (353), 13 states have internal predecessors, (353), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 261 [2022-11-03 01:59:23,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:23,528 INFO L225 Difference]: With dead ends: 29590 [2022-11-03 01:59:23,528 INFO L226 Difference]: Without dead ends: 20293 [2022-11-03 01:59:23,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1129 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1202, Invalid=3490, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 01:59:23,535 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 2523 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:23,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2523 Valid, 3533 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 01:59:23,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20293 states. [2022-11-03 01:59:24,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20293 to 8382. [2022-11-03 01:59:24,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8382 states, 8245 states have (on average 1.1748938750758036) internal successors, (9687), 8245 states have internal predecessors, (9687), 135 states have call successors, (135), 1 states have call predecessors, (135), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2022-11-03 01:59:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8382 states to 8382 states and 9957 transitions. [2022-11-03 01:59:24,618 INFO L78 Accepts]: Start accepts. Automaton has 8382 states and 9957 transitions. Word has length 261 [2022-11-03 01:59:24,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:24,618 INFO L495 AbstractCegarLoop]: Abstraction has 8382 states and 9957 transitions. [2022-11-03 01:59:24,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.153846153846153) internal successors, (353), 13 states have internal predecessors, (353), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 01:59:24,619 INFO L276 IsEmpty]: Start isEmpty. Operand 8382 states and 9957 transitions. [2022-11-03 01:59:24,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:59:24,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:24,624 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:59:24,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (124)] Forceful destruction successful, exit code 0 [2022-11-03 01:59:24,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (125)] Ended with exit code 0 [2022-11-03 01:59:25,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-11-03 01:59:25,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,125 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,126 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:25,248 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:25,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:25,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2060749230, now seen corresponding path program 1 times [2022-11-03 01:59:25,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:59:25,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132331739] [2022-11-03 01:59:25,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:25,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:59:25,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:59:25,252 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:59:25,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (127)] Waiting until timeout for monitored process [2022-11-03 01:59:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:25,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-03 01:59:25,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 182 proven. 73 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-03 01:59:29,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:31,153 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:59:31,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132331739] [2022-11-03 01:59:31,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132331739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:59:31,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1601219055] [2022-11-03 01:59:31,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:31,154 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:59:31,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:59:31,156 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:59:31,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (128)] Waiting until timeout for monitored process [2022-11-03 01:59:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:32,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 01:59:32,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 143 proven. 88 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:59:34,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:35,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1601219055] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:59:35,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554957653] [2022-11-03 01:59:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:35,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:35,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:35,946 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:35,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-11-03 01:59:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:36,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:59:36,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 01:59:39,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:39,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554957653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:59:39,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:59:39,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 7] total 34 [2022-11-03 01:59:39,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138599709] [2022-11-03 01:59:39,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:59:39,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-03 01:59:39,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:59:39,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-03 01:59:39,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2204, Unknown=0, NotChecked=0, Total=2352 [2022-11-03 01:59:39,685 INFO L87 Difference]: Start difference. First operand 8382 states and 9957 transitions. Second operand has 34 states, 32 states have (on average 16.71875) internal successors, (535), 34 states have internal predecessors, (535), 8 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-03 02:00:07,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:07,577 INFO L93 Difference]: Finished difference Result 24508 states and 29465 transitions. [2022-11-03 02:00:07,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-11-03 02:00:07,577 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 16.71875) internal successors, (535), 34 states have internal predecessors, (535), 8 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) Word has length 261 [2022-11-03 02:00:07,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:07,595 INFO L225 Difference]: With dead ends: 24508 [2022-11-03 02:00:07,595 INFO L226 Difference]: Without dead ends: 16462 [2022-11-03 02:00:07,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 4177 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=3109, Invalid=16913, Unknown=0, NotChecked=0, Total=20022 [2022-11-03 02:00:07,602 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 3143 mSDsluCounter, 11746 mSDsCounter, 0 mSdLazyCounter, 3919 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 12225 SdHoareTripleChecker+Invalid, 6140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 3919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1874 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:07,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3146 Valid, 12225 Invalid, 6140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 3919 Invalid, 0 Unknown, 1874 Unchecked, 5.2s Time] [2022-11-03 02:00:07,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16462 states. [2022-11-03 02:00:08,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16462 to 10643. [2022-11-03 02:00:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10643 states, 10461 states have (on average 1.180479877640761) internal successors, (12349), 10461 states have internal predecessors, (12349), 180 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180) [2022-11-03 02:00:08,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10643 states to 10643 states and 12709 transitions. [2022-11-03 02:00:08,998 INFO L78 Accepts]: Start accepts. Automaton has 10643 states and 12709 transitions. Word has length 261 [2022-11-03 02:00:08,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:08,998 INFO L495 AbstractCegarLoop]: Abstraction has 10643 states and 12709 transitions. [2022-11-03 02:00:08,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 16.71875) internal successors, (535), 34 states have internal predecessors, (535), 8 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-03 02:00:08,999 INFO L276 IsEmpty]: Start isEmpty. Operand 10643 states and 12709 transitions. [2022-11-03 02:00:09,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 02:00:09,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:09,005 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:09,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (127)] Ended with exit code 0 [2022-11-03 02:00:09,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:09,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (128)] Ended with exit code 0 [2022-11-03 02:00:09,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,129 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,128 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:00:09,606 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:09,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:09,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2076214038, now seen corresponding path program 1 times [2022-11-03 02:00:09,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:00:09,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389204098] [2022-11-03 02:00:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:09,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:00:09,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:00:09,609 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:00:09,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (130)] Waiting until timeout for monitored process [2022-11-03 02:00:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:10,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 02:00:10,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 36 proven. 123 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 02:00:12,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:12,513 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:00:12,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389204098] [2022-11-03 02:00:12,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389204098] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:00:12,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1111416041] [2022-11-03 02:00:12,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:12,514 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:00:12,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:00:12,515 INFO L229 MonitoredProcess]: Starting monitored process 131 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:00:12,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (131)] Waiting until timeout for monitored process [2022-11-03 02:00:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:13,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:00:13,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:15,815 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 36 proven. 123 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 02:00:15,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:15,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1111416041] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:00:15,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133427901] [2022-11-03 02:00:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:15,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:00:15,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:00:15,849 INFO L229 MonitoredProcess]: Starting monitored process 132 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:00:15,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-11-03 02:00:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:16,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:00:16,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 20 proven. 22 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 02:00:19,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:19,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133427901] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:00:19,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:00:19,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 7] total 22 [2022-11-03 02:00:19,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543750682] [2022-11-03 02:00:19,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:00:19,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 02:00:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:00:19,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 02:00:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:00:19,436 INFO L87 Difference]: Start difference. First operand 10643 states and 12709 transitions. Second operand has 22 states, 22 states have (on average 16.09090909090909) internal successors, (354), 22 states have internal predecessors, (354), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-03 02:00:28,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:28,858 INFO L93 Difference]: Finished difference Result 30694 states and 36599 transitions. [2022-11-03 02:00:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-03 02:00:28,859 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.09090909090909) internal successors, (354), 22 states have internal predecessors, (354), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 261 [2022-11-03 02:00:28,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:28,877 INFO L225 Difference]: With dead ends: 30694 [2022-11-03 02:00:28,877 INFO L226 Difference]: Without dead ends: 20667 [2022-11-03 02:00:28,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 911 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1153, Invalid=3677, Unknown=0, NotChecked=0, Total=4830 [2022-11-03 02:00:28,883 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 4666 mSDsluCounter, 4114 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1293 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:28,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4666 Valid, 4543 Invalid, 2188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 697 Invalid, 0 Unknown, 1293 Unchecked, 1.1s Time] [2022-11-03 02:00:28,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20667 states. [2022-11-03 02:00:30,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20667 to 10138. [2022-11-03 02:00:30,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10138 states, 9965 states have (on average 1.176818866031109) internal successors, (11727), 9965 states have internal predecessors, (11727), 171 states have call successors, (171), 1 states have call predecessors, (171), 1 states have return successors, (171), 171 states have call predecessors, (171), 171 states have call successors, (171) [2022-11-03 02:00:30,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10138 states to 10138 states and 12069 transitions. [2022-11-03 02:00:30,276 INFO L78 Accepts]: Start accepts. Automaton has 10138 states and 12069 transitions. Word has length 261 [2022-11-03 02:00:30,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:30,276 INFO L495 AbstractCegarLoop]: Abstraction has 10138 states and 12069 transitions. [2022-11-03 02:00:30,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.09090909090909) internal successors, (354), 22 states have internal predecessors, (354), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-03 02:00:30,277 INFO L276 IsEmpty]: Start isEmpty. Operand 10138 states and 12069 transitions. [2022-11-03 02:00:30,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 02:00:30,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:30,281 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:30,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (131)] Ended with exit code 0 [2022-11-03 02:00:30,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (130)] Ended with exit code 0 [2022-11-03 02:00:30,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-11-03 02:00:30,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,130 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,132 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:00:30,882 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:30,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:30,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1671886998, now seen corresponding path program 1 times [2022-11-03 02:00:30,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:00:30,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048990458] [2022-11-03 02:00:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:30,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:00:30,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:00:30,885 INFO L229 MonitoredProcess]: Starting monitored process 133 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:00:30,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (133)] Waiting until timeout for monitored process [2022-11-03 02:00:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:31,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 02:00:31,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:33,340 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 28 proven. 131 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 02:00:33,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:33,423 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:00:33,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048990458] [2022-11-03 02:00:33,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048990458] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:00:33,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [958740357] [2022-11-03 02:00:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:33,424 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:00:33,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:00:33,425 INFO L229 MonitoredProcess]: Starting monitored process 134 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:00:33,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (134)] Waiting until timeout for monitored process [2022-11-03 02:00:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:34,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:00:34,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 28 proven. 131 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 02:00:36,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:36,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [958740357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:00:36,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327249028] [2022-11-03 02:00:36,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:36,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:00:36,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:00:36,949 INFO L229 MonitoredProcess]: Starting monitored process 135 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:00:36,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-11-03 02:00:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:37,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 02:00:37,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 28 proven. 131 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 02:00:39,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:39,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327249028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:00:39,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:00:39,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 17 [2022-11-03 02:00:39,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616205182] [2022-11-03 02:00:39,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:00:39,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 02:00:39,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:00:39,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 02:00:39,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:00:39,935 INFO L87 Difference]: Start difference. First operand 10138 states and 12069 transitions. Second operand has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 02:00:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:42,926 INFO L93 Difference]: Finished difference Result 16949 states and 20274 transitions. [2022-11-03 02:00:42,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:00:42,927 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 261 [2022-11-03 02:00:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:42,938 INFO L225 Difference]: With dead ends: 16949 [2022-11-03 02:00:42,939 INFO L226 Difference]: Without dead ends: 13208 [2022-11-03 02:00:42,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 849 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=356, Invalid=1204, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 02:00:42,943 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1717 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 807 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:42,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 2205 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 284 Invalid, 0 Unknown, 807 Unchecked, 0.4s Time] [2022-11-03 02:00:42,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13208 states. [2022-11-03 02:00:44,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13208 to 10142. [2022-11-03 02:00:44,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10142 states, 9969 states have (on average 1.1768482295114857) internal successors, (11732), 9969 states have internal predecessors, (11732), 171 states have call successors, (171), 1 states have call predecessors, (171), 1 states have return successors, (171), 171 states have call predecessors, (171), 171 states have call successors, (171) [2022-11-03 02:00:44,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10142 states to 10142 states and 12074 transitions. [2022-11-03 02:00:44,294 INFO L78 Accepts]: Start accepts. Automaton has 10142 states and 12074 transitions. Word has length 261 [2022-11-03 02:00:44,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:44,294 INFO L495 AbstractCegarLoop]: Abstraction has 10142 states and 12074 transitions. [2022-11-03 02:00:44,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 02:00:44,295 INFO L276 IsEmpty]: Start isEmpty. Operand 10142 states and 12074 transitions. [2022-11-03 02:00:44,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 02:00:44,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:44,299 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:44,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:44,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (133)] Ended with exit code 0 [2022-11-03 02:00:44,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (134)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:44,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,133 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,134 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:00:44,900 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:44,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:44,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1882745238, now seen corresponding path program 1 times [2022-11-03 02:00:44,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:00:44,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771129221] [2022-11-03 02:00:44,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:44,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:00:44,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:00:44,904 INFO L229 MonitoredProcess]: Starting monitored process 136 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:00:44,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (136)] Waiting until timeout for monitored process [2022-11-03 02:00:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:45,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 02:00:45,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 135 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 02:00:47,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:47,776 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:00:47,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771129221] [2022-11-03 02:00:47,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771129221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:00:47,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [873899001] [2022-11-03 02:00:47,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:47,776 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:00:47,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:00:47,777 INFO L229 MonitoredProcess]: Starting monitored process 137 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:00:47,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (137)] Waiting until timeout for monitored process [2022-11-03 02:00:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:49,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:00:49,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 20 proven. 139 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 02:00:51,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:51,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [873899001] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:00:51,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952207819] [2022-11-03 02:00:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:51,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:00:51,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:00:51,758 INFO L229 MonitoredProcess]: Starting monitored process 138 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:00:51,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-11-03 02:00:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:52,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:00:52,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:54,970 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 20 proven. 22 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 02:00:54,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:55,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952207819] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:00:55,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:00:55,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 7] total 33 [2022-11-03 02:00:55,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457295014] [2022-11-03 02:00:55,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:00:55,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-03 02:00:55,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:00:55,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-03 02:00:55,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1314, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:00:55,338 INFO L87 Difference]: Start difference. First operand 10142 states and 12074 transitions. Second operand has 33 states, 33 states have (on average 16.666666666666668) internal successors, (550), 33 states have internal predecessors, (550), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-03 02:01:05,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:05,519 INFO L93 Difference]: Finished difference Result 29458 states and 35158 transitions. [2022-11-03 02:01:05,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-03 02:01:05,519 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 16.666666666666668) internal successors, (550), 33 states have internal predecessors, (550), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 261 [2022-11-03 02:01:05,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:05,537 INFO L225 Difference]: With dead ends: 29458 [2022-11-03 02:01:05,537 INFO L226 Difference]: Without dead ends: 19721 [2022-11-03 02:01:05,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1189, Invalid=4663, Unknown=0, NotChecked=0, Total=5852 [2022-11-03 02:01:05,544 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 5965 mSDsluCounter, 6735 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5965 SdHoareTripleChecker+Valid, 7154 SdHoareTripleChecker+Invalid, 3342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2237 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:05,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5965 Valid, 7154 Invalid, 3342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 867 Invalid, 0 Unknown, 2237 Unchecked, 1.3s Time] [2022-11-03 02:01:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19721 states. [2022-11-03 02:01:06,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19721 to 10052. [2022-11-03 02:01:06,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10052 states, 9879 states have (on average 1.1753213888045349) internal successors, (11611), 9879 states have internal predecessors, (11611), 171 states have call successors, (171), 1 states have call predecessors, (171), 1 states have return successors, (171), 171 states have call predecessors, (171), 171 states have call successors, (171) [2022-11-03 02:01:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10052 states to 10052 states and 11953 transitions. [2022-11-03 02:01:06,946 INFO L78 Accepts]: Start accepts. Automaton has 10052 states and 11953 transitions. Word has length 261 [2022-11-03 02:01:06,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:06,947 INFO L495 AbstractCegarLoop]: Abstraction has 10052 states and 11953 transitions. [2022-11-03 02:01:06,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 16.666666666666668) internal successors, (550), 33 states have internal predecessors, (550), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-03 02:01:06,947 INFO L276 IsEmpty]: Start isEmpty. Operand 10052 states and 11953 transitions. [2022-11-03 02:01:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 02:01:06,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:06,954 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:06,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (136)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:07,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2022-11-03 02:01:07,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (137)] Ended with exit code 0 [2022-11-03 02:01:07,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,138 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,137 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:01:07,579 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:07,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:07,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1995038954, now seen corresponding path program 1 times [2022-11-03 02:01:07,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:01:07,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116155936] [2022-11-03 02:01:07,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:07,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:01:07,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:01:07,581 INFO L229 MonitoredProcess]: Starting monitored process 139 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:01:07,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (139)] Waiting until timeout for monitored process [2022-11-03 02:01:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:08,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 02:01:08,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 16 proven. 143 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 02:01:10,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:10,515 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:01:10,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116155936] [2022-11-03 02:01:10,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116155936] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:10,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [34690418] [2022-11-03 02:01:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:10,516 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:01:10,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:01:10,517 INFO L229 MonitoredProcess]: Starting monitored process 140 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:01:10,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (140)] Waiting until timeout for monitored process [2022-11-03 02:01:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:11,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:01:11,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 16 proven. 143 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 02:01:14,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:14,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [34690418] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:14,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59586184] [2022-11-03 02:01:14,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:14,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:14,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:14,417 INFO L229 MonitoredProcess]: Starting monitored process 141 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:01:14,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-11-03 02:01:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:14,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 02:01:14,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:17,760 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 16 proven. 143 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 02:01:17,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:17,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59586184] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:17,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:01:17,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 17 [2022-11-03 02:01:17,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853881616] [2022-11-03 02:01:17,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:01:17,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 02:01:17,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:01:17,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 02:01:17,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:01:17,811 INFO L87 Difference]: Start difference. First operand 10052 states and 11953 transitions. Second operand has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 02:01:20,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:20,830 INFO L93 Difference]: Finished difference Result 17497 states and 20860 transitions. [2022-11-03 02:01:20,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:01:20,830 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 261 [2022-11-03 02:01:20,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:20,840 INFO L225 Difference]: With dead ends: 17497 [2022-11-03 02:01:20,840 INFO L226 Difference]: Without dead ends: 11429 [2022-11-03 02:01:20,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=339, Invalid=1221, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 02:01:20,844 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 2053 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 669 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:20,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 2217 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 279 Invalid, 0 Unknown, 669 Unchecked, 0.5s Time] [2022-11-03 02:01:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11429 states. [2022-11-03 02:01:22,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11429 to 10058. [2022-11-03 02:01:22,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10058 states, 9885 states have (on average 1.1752149721800709) internal successors, (11617), 9885 states have internal predecessors, (11617), 171 states have call successors, (171), 1 states have call predecessors, (171), 1 states have return successors, (171), 171 states have call predecessors, (171), 171 states have call successors, (171) [2022-11-03 02:01:22,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10058 states to 10058 states and 11959 transitions. [2022-11-03 02:01:22,098 INFO L78 Accepts]: Start accepts. Automaton has 10058 states and 11959 transitions. Word has length 261 [2022-11-03 02:01:22,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:22,098 INFO L495 AbstractCegarLoop]: Abstraction has 10058 states and 11959 transitions. [2022-11-03 02:01:22,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 02:01:22,099 INFO L276 IsEmpty]: Start isEmpty. Operand 10058 states and 11959 transitions. [2022-11-03 02:01:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 02:01:22,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:22,104 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:22,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:22,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (140)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:22,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (139)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:22,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,140 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,139 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:01:22,705 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:22,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:22,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1883608726, now seen corresponding path program 1 times [2022-11-03 02:01:22,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:01:22,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555896984] [2022-11-03 02:01:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:22,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:01:22,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:01:22,708 INFO L229 MonitoredProcess]: Starting monitored process 142 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:01:22,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (142)] Waiting until timeout for monitored process [2022-11-03 02:01:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:23,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-03 02:01:23,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 27 proven. 156 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-03 02:01:26,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:26,831 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:01:26,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555896984] [2022-11-03 02:01:26,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555896984] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:26,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1346853919] [2022-11-03 02:01:26,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:26,832 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:01:26,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:01:26,833 INFO L229 MonitoredProcess]: Starting monitored process 143 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:01:26,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (143)] Waiting until timeout for monitored process [2022-11-03 02:01:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:28,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:01:28,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 8 proven. 151 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 02:01:30,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:31,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1346853919] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:31,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911422034] [2022-11-03 02:01:31,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:31,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:31,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:31,291 INFO L229 MonitoredProcess]: Starting monitored process 144 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:01:31,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-11-03 02:01:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:31,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 02:01:31,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-03 02:01:33,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:33,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911422034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:33,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:01:33,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 9] total 36 [2022-11-03 02:01:33,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282515523] [2022-11-03 02:01:33,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:01:33,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-03 02:01:33,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:01:33,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-03 02:01:33,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 02:01:33,780 INFO L87 Difference]: Start difference. First operand 10058 states and 11959 transitions. Second operand has 36 states, 35 states have (on average 13.2) internal successors, (462), 36 states have internal predecessors, (462), 8 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2022-11-03 02:01:50,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:50,983 INFO L93 Difference]: Finished difference Result 36185 states and 42852 transitions. [2022-11-03 02:01:50,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-03 02:01:50,984 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 13.2) internal successors, (462), 36 states have internal predecessors, (462), 8 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) Word has length 261 [2022-11-03 02:01:50,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:51,006 INFO L225 Difference]: With dead ends: 36185 [2022-11-03 02:01:51,006 INFO L226 Difference]: Without dead ends: 26516 [2022-11-03 02:01:51,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 832 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3146 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=2316, Invalid=10794, Unknown=0, NotChecked=0, Total=13110 [2022-11-03 02:01:51,013 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 9883 mSDsluCounter, 6239 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9883 SdHoareTripleChecker+Valid, 6569 SdHoareTripleChecker+Invalid, 4664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1512 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:51,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9883 Valid, 6569 Invalid, 4664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 2479 Invalid, 0 Unknown, 1512 Unchecked, 3.2s Time] [2022-11-03 02:01:51,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26516 states. [2022-11-03 02:01:52,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26516 to 10288. [2022-11-03 02:01:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10288 states, 10103 states have (on average 1.1739087399782242) internal successors, (11860), 10103 states have internal predecessors, (11860), 183 states have call successors, (183), 1 states have call predecessors, (183), 1 states have return successors, (183), 183 states have call predecessors, (183), 183 states have call successors, (183) [2022-11-03 02:01:52,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10288 states to 10288 states and 12226 transitions. [2022-11-03 02:01:52,505 INFO L78 Accepts]: Start accepts. Automaton has 10288 states and 12226 transitions. Word has length 261 [2022-11-03 02:01:52,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:52,505 INFO L495 AbstractCegarLoop]: Abstraction has 10288 states and 12226 transitions. [2022-11-03 02:01:52,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 13.2) internal successors, (462), 36 states have internal predecessors, (462), 8 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2022-11-03 02:01:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand 10288 states and 12226 transitions. [2022-11-03 02:01:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 02:01:52,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:52,512 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:52,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (143)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:52,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-11-03 02:01:52,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (142)] Ended with exit code 0 [2022-11-03 02:01:53,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,144 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,142 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:01:53,123 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:53,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:53,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1602011944, now seen corresponding path program 1 times [2022-11-03 02:01:53,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:01:53,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444893717] [2022-11-03 02:01:53,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:53,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:01:53,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:01:53,126 INFO L229 MonitoredProcess]: Starting monitored process 145 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:01:53,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (145)] Waiting until timeout for monitored process [2022-11-03 02:01:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:53,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:01:53,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 84 proven. 6 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-03 02:01:55,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:56,081 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:01:56,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444893717] [2022-11-03 02:01:56,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444893717] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:56,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1070877685] [2022-11-03 02:01:56,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:56,082 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:01:56,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:01:56,083 INFO L229 MonitoredProcess]: Starting monitored process 146 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:01:56,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (146)] Waiting until timeout for monitored process [2022-11-03 02:01:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:57,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:01:57,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 84 proven. 6 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-03 02:01:58,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:59,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1070877685] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:01:59,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363494348] [2022-11-03 02:01:59,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:59,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:59,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:59,332 INFO L229 MonitoredProcess]: Starting monitored process 147 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:01:59,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-11-03 02:01:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:59,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:01:59,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 84 proven. 7 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-03 02:02:01,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:02,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363494348] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:02:02,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:02:02,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 20] total 20 [2022-11-03 02:02:02,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900044891] [2022-11-03 02:02:02,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:02:02,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 02:02:02,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:02,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 02:02:02,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:02:02,018 INFO L87 Difference]: Start difference. First operand 10288 states and 12226 transitions. Second operand has 20 states, 20 states have (on average 8.55) internal successors, (171), 20 states have internal predecessors, (171), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:02:07,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:07,336 INFO L93 Difference]: Finished difference Result 23499 states and 27818 transitions. [2022-11-03 02:02:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-03 02:02:07,336 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.55) internal successors, (171), 20 states have internal predecessors, (171), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 02:02:07,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:07,360 INFO L225 Difference]: With dead ends: 23499 [2022-11-03 02:02:07,361 INFO L226 Difference]: Without dead ends: 23497 [2022-11-03 02:02:07,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 836 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=343, Invalid=1819, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 02:02:07,365 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 503 mSDsluCounter, 4306 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 4633 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 672 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:07,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 4633 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 506 Invalid, 0 Unknown, 672 Unchecked, 0.6s Time] [2022-11-03 02:02:07,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23497 states. [2022-11-03 02:02:09,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23497 to 10955. [2022-11-03 02:02:09,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10955 states, 10755 states have (on average 1.1747094374709437) internal successors, (12634), 10755 states have internal predecessors, (12634), 198 states have call successors, (198), 1 states have call predecessors, (198), 1 states have return successors, (198), 198 states have call predecessors, (198), 198 states have call successors, (198) [2022-11-03 02:02:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10955 states to 10955 states and 13030 transitions. [2022-11-03 02:02:09,063 INFO L78 Accepts]: Start accepts. Automaton has 10955 states and 13030 transitions. Word has length 261 [2022-11-03 02:02:09,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:09,063 INFO L495 AbstractCegarLoop]: Abstraction has 10955 states and 13030 transitions. [2022-11-03 02:02:09,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.55) internal successors, (171), 20 states have internal predecessors, (171), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:02:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 10955 states and 13030 transitions. [2022-11-03 02:02:09,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 02:02:09,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:09,068 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:09,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (146)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:09,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (145)] Ended with exit code 0 [2022-11-03 02:02:09,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2022-11-03 02:02:09,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,145 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,147 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:09,669 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:09,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:09,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1659270246, now seen corresponding path program 2 times [2022-11-03 02:02:09,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:09,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258361433] [2022-11-03 02:02:09,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:02:09,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:09,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:09,672 INFO L229 MonitoredProcess]: Starting monitored process 148 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:09,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (148)] Waiting until timeout for monitored process [2022-11-03 02:02:10,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:02:10,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:02:10,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-03 02:02:10,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 23 proven. 160 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-03 02:02:13,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:18,013 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:18,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258361433] [2022-11-03 02:02:18,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258361433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:02:18,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1155631406] [2022-11-03 02:02:18,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:02:18,014 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:02:18,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:02:18,017 INFO L229 MonitoredProcess]: Starting monitored process 149 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:02:18,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (149)] Waiting until timeout for monitored process [2022-11-03 02:02:19,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:02:19,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:02:19,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:02:19,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:23,520 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 8 proven. 151 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 02:02:23,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:25,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1155631406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:02:25,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908561956] [2022-11-03 02:02:25,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:02:25,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:25,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:25,753 INFO L229 MonitoredProcess]: Starting monitored process 150 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:02:25,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daae558c-6eb0-4364-ace4-c380243f6778/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-11-03 02:02:26,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:02:26,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:02:26,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 94 conjunts are in the unsatisfiable core [2022-11-03 02:02:26,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:44,326 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 8 proven. 151 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 02:02:44,326 INFO L328 TraceCheckSpWp]: Computing backward predicates...