./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 109ee6fb23cd6e30d14aec37d73eede06aedf81ad0f99da544662d8756597166 --- 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 [2022-11-02 19:57:45,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:57:45,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:57:45,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:57:45,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:57:45,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:57:45,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:57:45,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:57:45,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:57:45,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:57:45,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:57:45,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:57:45,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:57:45,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:57:45,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:57:45,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:57:45,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:57:45,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:57:45,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:57:45,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:57:45,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:57:45,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:57:45,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:57:45,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:57:45,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:57:45,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:57:45,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:57:45,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:57:45,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:57:45,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:57:45,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:57:45,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:57:45,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:57:45,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:57:45,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:57:45,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:57:45,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:57:45,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:57:45,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:57:45,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:57:45,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:57:45,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 19:57:45,849 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:57:45,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:57:45,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:57:45,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:57:45,851 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:57:45,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:57:45,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:57:45,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:57:45,853 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:57:45,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:57:45,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:57:45,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:57:45,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:57:45,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:57:45,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:57:45,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:57:45,855 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:57:45,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:57:45,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:57:45,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:57:45,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:57:45,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:57:45,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:57:45,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:57:45,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:57:45,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:57:45,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:57:45,859 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:57:45,859 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:57:45,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:57:45,860 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_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 109ee6fb23cd6e30d14aec37d73eede06aedf81ad0f99da544662d8756597166 [2022-11-02 19:57:46,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:57:46,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:57:46,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:57:46,135 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:57:46,137 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:57:46,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c [2022-11-02 19:57:46,232 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/data/5fdd3db2f/4c9531ac70f84ce2a1aa35314a0890ef/FLAGb91d3392d [2022-11-02 19:57:46,785 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:57:46,786 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c [2022-11-02 19:57:46,797 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/data/5fdd3db2f/4c9531ac70f84ce2a1aa35314a0890ef/FLAGb91d3392d [2022-11-02 19:57:47,088 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/data/5fdd3db2f/4c9531ac70f84ce2a1aa35314a0890ef [2022-11-02 19:57:47,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:57:47,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:57:47,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:57:47,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:57:47,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:57:47,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:57:47" (1/1) ... [2022-11-02 19:57:47,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8e2eb20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:47, skipping insertion in model container [2022-11-02 19:57:47,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:57:47" (1/1) ... [2022-11-02 19:57:47,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:57:47,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:57:47,419 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_3418b433-3b8b-4d43-bda6-e850bec79fcb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c[1107,1120] [2022-11-02 19:57:47,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:57:47,658 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:57:47,681 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_3418b433-3b8b-4d43-bda6-e850bec79fcb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c[1107,1120] [2022-11-02 19:57:47,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:57:47,845 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:57:47,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:47 WrapperNode [2022-11-02 19:57:47,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:57:47,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:57:47,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:57:47,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:57:47,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:47" (1/1) ... [2022-11-02 19:57:47,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:47" (1/1) ... [2022-11-02 19:57:48,027 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1367 [2022-11-02 19:57:48,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:57:48,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:57:48,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:57:48,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:57:48,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:47" (1/1) ... [2022-11-02 19:57:48,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:47" (1/1) ... [2022-11-02 19:57:48,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:47" (1/1) ... [2022-11-02 19:57:48,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:47" (1/1) ... [2022-11-02 19:57:48,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:47" (1/1) ... [2022-11-02 19:57:48,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:47" (1/1) ... [2022-11-02 19:57:48,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:47" (1/1) ... [2022-11-02 19:57:48,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:47" (1/1) ... [2022-11-02 19:57:48,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:57:48,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:57:48,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:57:48,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:57:48,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:47" (1/1) ... [2022-11-02 19:57:48,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:57:48,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:57:48,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:57:48,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:57:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:57:48,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:57:48,515 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:57:48,517 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:57:49,876 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:57:49,887 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:57:49,887 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:57:49,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:57:49 BoogieIcfgContainer [2022-11-02 19:57:49,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:57:49,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:57:49,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:57:49,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:57:49,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:57:47" (1/3) ... [2022-11-02 19:57:49,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4581b2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:57:49, skipping insertion in model container [2022-11-02 19:57:49,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:47" (2/3) ... [2022-11-02 19:57:49,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4581b2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:57:49, skipping insertion in model container [2022-11-02 19:57:49,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:57:49" (3/3) ... [2022-11-02 19:57:49,906 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.toy_lock_4.c [2022-11-02 19:57:49,941 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:57:49,941 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:57:50,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:57:50,024 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=PETRI_NET, 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;@25d359e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:57:50,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:57:50,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 259 states, 257 states have (on average 1.4980544747081712) internal successors, (385), 258 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 19:57:50,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:50,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 19:57:50,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:50,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:50,043 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 19:57:50,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:57:50,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011954757] [2022-11-02 19:57:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:50,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:57:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:57:51,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 19:57:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:57:51,626 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 19:57:51,627 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 19:57:51,629 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 19:57:51,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:57:51,635 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 19:57:51,639 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 19:57:51,678 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 19:57:51,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 07:57:51 BoogieIcfgContainer [2022-11-02 19:57:51,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 19:57:51,704 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 19:57:51,704 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 19:57:51,704 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 19:57:51,705 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:57:49" (3/4) ... [2022-11-02 19:57:51,708 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 19:57:51,708 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 19:57:51,709 INFO L158 Benchmark]: Toolchain (without parser) took 4616.09ms. Allocated memory was 113.2MB in the beginning and 155.2MB in the end (delta: 41.9MB). Free memory was 77.9MB in the beginning and 66.1MB in the end (delta: 11.8MB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. [2022-11-02 19:57:51,710 INFO L158 Benchmark]: CDTParser took 0.95ms. Allocated memory is still 83.9MB. Free memory was 56.9MB in the beginning and 56.9MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:57:51,711 INFO L158 Benchmark]: CACSL2BoogieTranslator took 748.31ms. Allocated memory is still 113.2MB. Free memory was 77.7MB in the beginning and 68.8MB in the end (delta: 8.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 19:57:51,712 INFO L158 Benchmark]: Boogie Procedure Inliner took 178.64ms. Allocated memory is still 113.2MB. Free memory was 68.8MB in the beginning and 57.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 19:57:51,717 INFO L158 Benchmark]: Boogie Preprocessor took 100.82ms. Allocated memory is still 113.2MB. Free memory was 57.3MB in the beginning and 49.9MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 19:57:51,718 INFO L158 Benchmark]: RCFGBuilder took 1760.85ms. Allocated memory was 113.2MB in the beginning and 155.2MB in the end (delta: 41.9MB). Free memory was 49.9MB in the beginning and 65.8MB in the end (delta: -15.8MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2022-11-02 19:57:51,720 INFO L158 Benchmark]: TraceAbstraction took 1807.80ms. Allocated memory is still 155.2MB. Free memory was 64.8MB in the beginning and 66.1MB in the end (delta: -1.4MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2022-11-02 19:57:51,720 INFO L158 Benchmark]: Witness Printer took 4.09ms. Allocated memory is still 155.2MB. Free memory is still 66.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:57:51,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95ms. Allocated memory is still 83.9MB. Free memory was 56.9MB in the beginning and 56.9MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 748.31ms. Allocated memory is still 113.2MB. Free memory was 77.7MB in the beginning and 68.8MB in the end (delta: 8.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 178.64ms. Allocated memory is still 113.2MB. Free memory was 68.8MB in the beginning and 57.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.82ms. Allocated memory is still 113.2MB. Free memory was 57.3MB in the beginning and 49.9MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1760.85ms. Allocated memory was 113.2MB in the beginning and 155.2MB in the end (delta: 41.9MB). Free memory was 49.9MB in the beginning and 65.8MB in the end (delta: -15.8MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1807.80ms. Allocated memory is still 155.2MB. Free memory was 64.8MB in the beginning and 66.1MB in the end (delta: -1.4MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. * Witness Printer took 4.09ms. Allocated memory is still 155.2MB. Free memory is still 66.1MB. 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 bitwiseComplement at line 187, overapproximation of bitwiseOr at line 125, overapproximation of bitwiseAnd at line 103. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 8); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (8 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 2); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (2 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 1); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (1 - 1); [L34] const SORT_1 var_11 = 0; [L35] const SORT_5 var_45 = 1; [L36] const SORT_1 var_49 = 1; [L37] const SORT_5 var_60 = 0; [L38] const SORT_3 var_81 = 0; [L39] const SORT_3 var_90 = 1; [L40] const SORT_3 var_99 = 2; [L41] const SORT_3 var_108 = 3; [L43] SORT_1 input_2; [L44] SORT_3 input_4; [L45] SORT_5 input_6; [L46] SORT_1 input_7; [L47] SORT_3 input_8; [L48] SORT_3 input_9; [L49] SORT_5 input_10; [L51] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L52] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L53] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L54] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L55] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L56] SORT_1 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L57] SORT_1 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L58] SORT_1 state_56 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L59] SORT_5 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L60] SORT_5 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L61] SORT_5 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L62] SORT_5 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L63] SORT_1 state_68 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L64] SORT_1 state_70 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L65] SORT_1 state_72 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L66] SORT_1 state_74 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L68] SORT_1 init_13_arg_1 = var_11; [L69] state_12 = init_13_arg_1 [L70] SORT_1 init_16_arg_1 = var_11; [L71] state_15 = init_16_arg_1 [L72] SORT_1 init_21_arg_1 = var_11; [L73] state_20 = init_21_arg_1 [L74] SORT_1 init_27_arg_1 = var_11; [L75] state_26 = init_27_arg_1 [L76] SORT_1 init_51_arg_1 = var_49; [L77] state_50 = init_51_arg_1 [L78] SORT_1 init_53_arg_1 = var_11; [L79] state_52 = init_53_arg_1 [L80] SORT_1 init_55_arg_1 = var_11; [L81] state_54 = init_55_arg_1 [L82] SORT_1 init_57_arg_1 = var_11; [L83] state_56 = init_57_arg_1 [L84] SORT_5 init_59_arg_1 = var_45; [L85] state_58 = init_59_arg_1 [L86] SORT_5 init_62_arg_1 = var_60; [L87] state_61 = init_62_arg_1 [L88] SORT_5 init_64_arg_1 = var_60; [L89] state_63 = init_64_arg_1 [L90] SORT_5 init_66_arg_1 = var_60; [L91] state_65 = init_66_arg_1 [L92] SORT_1 init_69_arg_1 = var_11; [L93] state_68 = init_69_arg_1 [L94] SORT_1 init_71_arg_1 = var_11; [L95] state_70 = init_71_arg_1 [L96] SORT_1 init_73_arg_1 = var_11; [L97] state_72 = init_73_arg_1 [L98] SORT_1 init_75_arg_1 = var_11; [L99] state_74 = init_75_arg_1 VAL [init_13_arg_1=0, init_16_arg_1=0, init_21_arg_1=0, init_27_arg_1=0, init_51_arg_1=1, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_59_arg_1=1, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_69_arg_1=0, init_71_arg_1=0, init_73_arg_1=0, init_75_arg_1=0, mask_SORT_1=255, mask_SORT_3=3, mask_SORT_5=1, msb_SORT_1=128, msb_SORT_3=2, msb_SORT_5=1, state_12=0, state_15=0, state_20=0, state_26=0, state_50=1, state_52=0, state_54=0, state_56=0, state_58=1, state_61=0, state_63=0, state_65=0, state_68=0, state_70=0, state_72=0, state_74=0, var_108=3, var_11=0, var_45=1, var_49=1, var_60=0, var_81=0, var_90=1, var_99=2] [L102] input_2 = __VERIFIER_nondet_uchar() [L103] input_2 = input_2 & mask_SORT_1 [L104] input_4 = __VERIFIER_nondet_uchar() [L105] input_4 = input_4 & mask_SORT_3 [L106] input_6 = __VERIFIER_nondet_uchar() [L107] input_7 = __VERIFIER_nondet_uchar() [L108] input_7 = input_7 & mask_SORT_1 [L109] input_8 = __VERIFIER_nondet_uchar() [L110] input_8 = input_8 & mask_SORT_3 [L111] input_9 = __VERIFIER_nondet_uchar() [L112] input_9 = input_9 & mask_SORT_3 [L113] input_10 = __VERIFIER_nondet_uchar() [L114] input_10 = input_10 & mask_SORT_5 [L117] SORT_1 var_14_arg_0 = state_12; [L118] SORT_1 var_14_arg_1 = var_11; [L119] SORT_5 var_14 = var_14_arg_0 == var_14_arg_1; [L120] SORT_1 var_17_arg_0 = state_12; [L121] SORT_1 var_17_arg_1 = state_15; [L122] SORT_5 var_17 = var_17_arg_0 != var_17_arg_1; [L123] SORT_5 var_18_arg_0 = var_14; [L124] SORT_5 var_18_arg_1 = var_17; [L125] SORT_5 var_18 = var_18_arg_0 | var_18_arg_1; [L126] SORT_1 var_19_arg_0 = state_12; [L127] SORT_1 var_19_arg_1 = var_11; [L128] SORT_5 var_19 = var_19_arg_0 == var_19_arg_1; [L129] SORT_1 var_22_arg_0 = state_12; [L130] SORT_1 var_22_arg_1 = state_20; [L131] SORT_5 var_22 = var_22_arg_0 != var_22_arg_1; [L132] SORT_5 var_23_arg_0 = var_19; [L133] SORT_5 var_23_arg_1 = var_22; [L134] SORT_5 var_23 = var_23_arg_0 | var_23_arg_1; [L135] SORT_5 var_24_arg_0 = var_18; [L136] SORT_5 var_24_arg_1 = var_23; [L137] SORT_5 var_24 = var_24_arg_0 & var_24_arg_1; [L138] SORT_1 var_25_arg_0 = state_12; [L139] SORT_1 var_25_arg_1 = var_11; [L140] SORT_5 var_25 = var_25_arg_0 == var_25_arg_1; [L141] SORT_1 var_28_arg_0 = state_12; [L142] SORT_1 var_28_arg_1 = state_26; [L143] SORT_5 var_28 = var_28_arg_0 != var_28_arg_1; [L144] SORT_5 var_29_arg_0 = var_25; [L145] SORT_5 var_29_arg_1 = var_28; [L146] SORT_5 var_29 = var_29_arg_0 | var_29_arg_1; [L147] SORT_5 var_30_arg_0 = var_24; [L148] SORT_5 var_30_arg_1 = var_29; [L149] SORT_5 var_30 = var_30_arg_0 & var_30_arg_1; [L150] SORT_1 var_31_arg_0 = state_15; [L151] SORT_1 var_31_arg_1 = var_11; [L152] SORT_5 var_31 = var_31_arg_0 == var_31_arg_1; [L153] SORT_1 var_32_arg_0 = state_15; [L154] SORT_1 var_32_arg_1 = state_20; [L155] SORT_5 var_32 = var_32_arg_0 != var_32_arg_1; [L156] SORT_5 var_33_arg_0 = var_31; [L157] SORT_5 var_33_arg_1 = var_32; [L158] SORT_5 var_33 = var_33_arg_0 | var_33_arg_1; [L159] SORT_5 var_34_arg_0 = var_30; [L160] SORT_5 var_34_arg_1 = var_33; [L161] SORT_5 var_34 = var_34_arg_0 & var_34_arg_1; [L162] SORT_1 var_35_arg_0 = state_15; [L163] SORT_1 var_35_arg_1 = var_11; [L164] SORT_5 var_35 = var_35_arg_0 == var_35_arg_1; [L165] SORT_1 var_36_arg_0 = state_15; [L166] SORT_1 var_36_arg_1 = state_26; [L167] SORT_5 var_36 = var_36_arg_0 != var_36_arg_1; [L168] SORT_5 var_37_arg_0 = var_35; [L169] SORT_5 var_37_arg_1 = var_36; [L170] SORT_5 var_37 = var_37_arg_0 | var_37_arg_1; [L171] SORT_5 var_38_arg_0 = var_34; [L172] SORT_5 var_38_arg_1 = var_37; [L173] SORT_5 var_38 = var_38_arg_0 & var_38_arg_1; [L174] SORT_1 var_39_arg_0 = state_20; [L175] SORT_1 var_39_arg_1 = var_11; [L176] SORT_5 var_39 = var_39_arg_0 == var_39_arg_1; [L177] SORT_1 var_40_arg_0 = state_20; [L178] SORT_1 var_40_arg_1 = state_26; [L179] SORT_5 var_40 = var_40_arg_0 != var_40_arg_1; [L180] SORT_5 var_41_arg_0 = var_39; [L181] SORT_5 var_41_arg_1 = var_40; [L182] SORT_5 var_41 = var_41_arg_0 | var_41_arg_1; [L183] SORT_5 var_42_arg_0 = var_38; [L184] SORT_5 var_42_arg_1 = var_41; [L185] SORT_5 var_42 = var_42_arg_0 & var_42_arg_1; [L186] SORT_5 var_46_arg_0 = var_42; [L187] SORT_5 var_46 = ~var_46_arg_0; [L188] SORT_5 var_47_arg_0 = var_45; [L189] SORT_5 var_47_arg_1 = var_46; [L190] SORT_5 var_47 = var_47_arg_0 & var_47_arg_1; [L191] var_47 = var_47 & mask_SORT_5 [L192] SORT_5 bad_48_arg_0 = var_47; [L193] CALL __VERIFIER_assert(!(bad_48_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 1 procedures, 259 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 [2022-11-02 19:57:51,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 109ee6fb23cd6e30d14aec37d73eede06aedf81ad0f99da544662d8756597166 --- 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 [2022-11-02 19:57:54,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:57:54,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:57:54,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:57:54,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:57:54,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:57:54,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:57:54,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:57:54,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:57:54,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:57:54,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:57:54,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:57:54,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:57:54,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:57:54,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:57:54,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:57:54,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:57:54,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:57:54,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:57:54,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:57:54,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:57:54,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:57:54,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:57:54,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:57:54,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:57:54,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:57:54,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:57:54,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:57:54,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:57:54,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:57:54,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:57:54,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:57:54,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:57:54,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:57:54,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:57:54,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:57:54,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:57:54,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:57:54,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:57:54,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:57:54,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:57:54,216 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 19:57:54,257 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:57:54,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:57:54,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:57:54,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:57:54,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:57:54,260 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:57:54,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:57:54,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:57:54,261 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:57:54,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:57:54,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:57:54,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:57:54,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:57:54,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:57:54,262 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 19:57:54,263 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 19:57:54,263 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 19:57:54,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:57:54,263 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:57:54,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:57:54,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:57:54,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:57:54,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:57:54,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:57:54,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:57:54,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:57:54,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:57:54,264 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 19:57:54,265 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 19:57:54,265 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:57:54,265 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:57:54,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:57:54,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 19:57:54,265 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_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 109ee6fb23cd6e30d14aec37d73eede06aedf81ad0f99da544662d8756597166 [2022-11-02 19:57:54,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:57:54,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:57:54,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:57:54,598 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:57:54,599 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:57:54,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c [2022-11-02 19:57:54,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/data/c1c852ef0/a3d8de1653a2406aaafa67056b6f640a/FLAG1516cb54f [2022-11-02 19:57:55,353 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:57:55,354 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c [2022-11-02 19:57:55,367 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/data/c1c852ef0/a3d8de1653a2406aaafa67056b6f640a/FLAG1516cb54f [2022-11-02 19:57:55,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/data/c1c852ef0/a3d8de1653a2406aaafa67056b6f640a [2022-11-02 19:57:55,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:57:55,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:57:55,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:57:55,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:57:55,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:57:55,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:57:55" (1/1) ... [2022-11-02 19:57:55,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32edcc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:55, skipping insertion in model container [2022-11-02 19:57:55,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:57:55" (1/1) ... [2022-11-02 19:57:55,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:57:55,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:57:55,840 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_3418b433-3b8b-4d43-bda6-e850bec79fcb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c[1107,1120] [2022-11-02 19:57:56,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:57:56,098 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:57:56,109 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_3418b433-3b8b-4d43-bda6-e850bec79fcb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c[1107,1120] [2022-11-02 19:57:56,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:57:56,262 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:57:56,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:56 WrapperNode [2022-11-02 19:57:56,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:57:56,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:57:56,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:57:56,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:57:56,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:56" (1/1) ... [2022-11-02 19:57:56,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:56" (1/1) ... [2022-11-02 19:57:56,423 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1367 [2022-11-02 19:57:56,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:57:56,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:57:56,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:57:56,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:57:56,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:56" (1/1) ... [2022-11-02 19:57:56,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:56" (1/1) ... [2022-11-02 19:57:56,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:56" (1/1) ... [2022-11-02 19:57:56,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:56" (1/1) ... [2022-11-02 19:57:56,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:56" (1/1) ... [2022-11-02 19:57:56,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:56" (1/1) ... [2022-11-02 19:57:56,516 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:56" (1/1) ... [2022-11-02 19:57:56,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:56" (1/1) ... [2022-11-02 19:57:56,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:57:56,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:57:56,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:57:56,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:57:56,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:56" (1/1) ... [2022-11-02 19:57:56,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:57:56,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:57:56,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:57:56,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:57:56,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:57:56,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:57:57,003 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:57:57,005 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:57:58,113 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:57:58,124 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:57:58,124 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:57:58,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:57:58 BoogieIcfgContainer [2022-11-02 19:57:58,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:57:58,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:57:58,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:57:58,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:57:58,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:57:55" (1/3) ... [2022-11-02 19:57:58,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f86f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:57:58, skipping insertion in model container [2022-11-02 19:57:58,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:56" (2/3) ... [2022-11-02 19:57:58,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f86f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:57:58, skipping insertion in model container [2022-11-02 19:57:58,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:57:58" (3/3) ... [2022-11-02 19:57:58,136 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.toy_lock_4.c [2022-11-02 19:57:58,155 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:57:58,155 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:57:58,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:57:58,218 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=PETRI_NET, 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;@620c1aab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:57:58,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:57:58,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 259 states, 257 states have (on average 1.4980544747081712) internal successors, (385), 258 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:58,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 19:57:58,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:58,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 19:57:58,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:58,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:58,248 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 19:57:58,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:58,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072093125] [2022-11-02 19:57:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:58,268 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:58,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:58,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:58,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 19:57:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:58,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-02 19:57:58,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:59,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:59,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:59,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072093125] [2022-11-02 19:57:59,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072093125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:59,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:59,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:57:59,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478483380] [2022-11-02 19:57:59,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:59,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:57:59,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:59,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:57:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:57:59,205 INFO L87 Difference]: Start difference. First operand has 259 states, 257 states have (on average 1.4980544747081712) internal successors, (385), 258 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:59,520 INFO L93 Difference]: Finished difference Result 764 states and 1146 transitions. [2022-11-02 19:57:59,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:57:59,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 19:57:59,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:59,538 INFO L225 Difference]: With dead ends: 764 [2022-11-02 19:57:59,541 INFO L226 Difference]: Without dead ends: 507 [2022-11-02 19:57:59,549 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 [2022-11-02 19:57:59,554 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 748 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:59,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1094 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:57:59,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-11-02 19:57:59,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 257. [2022-11-02 19:57:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.48828125) internal successors, (381), 256 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 381 transitions. [2022-11-02 19:57:59,636 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 381 transitions. Word has length 5 [2022-11-02 19:57:59,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:59,637 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 381 transitions. [2022-11-02 19:57:59,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 381 transitions. [2022-11-02 19:57:59,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:57:59,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:59,660 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:59,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:59,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:59,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:59,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:59,873 INFO L85 PathProgramCache]: Analyzing trace with hash 109574483, now seen corresponding path program 1 times [2022-11-02 19:57:59,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:59,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026762814] [2022-11-02 19:57:59,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:59,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:59,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:59,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:59,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 19:58:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:00,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 19:58:00,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:00,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:00,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:00,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026762814] [2022-11-02 19:58:00,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026762814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:00,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:00,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:00,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652399795] [2022-11-02 19:58:00,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:00,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:00,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:00,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:00,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:00,699 INFO L87 Difference]: Start difference. First operand 257 states and 381 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:01,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:01,452 INFO L93 Difference]: Finished difference Result 1506 states and 2245 transitions. [2022-11-02 19:58:01,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:58:01,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:01,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:01,460 INFO L225 Difference]: With dead ends: 1506 [2022-11-02 19:58:01,460 INFO L226 Difference]: Without dead ends: 1253 [2022-11-02 19:58:01,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-11-02 19:58:01,465 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 4047 mSDsluCounter, 3878 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4047 SdHoareTripleChecker+Valid, 4243 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:01,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4047 Valid, 4243 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 19:58:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2022-11-02 19:58:01,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 267. [2022-11-02 19:58:01,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.4849624060150375) internal successors, (395), 266 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:01,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 395 transitions. [2022-11-02 19:58:01,506 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 395 transitions. Word has length 256 [2022-11-02 19:58:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:01,508 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 395 transitions. [2022-11-02 19:58:01,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 395 transitions. [2022-11-02 19:58:01,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:01,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:01,516 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:01,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:01,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:01,733 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:01,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:01,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1564015403, now seen corresponding path program 1 times [2022-11-02 19:58:01,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:01,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535878264] [2022-11-02 19:58:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:01,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:01,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:01,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:01,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 19:58:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:02,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:02,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:02,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:02,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:02,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:02,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535878264] [2022-11-02 19:58:02,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535878264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:02,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:02,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:02,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147225394] [2022-11-02 19:58:02,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:02,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:02,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:02,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:02,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:02,618 INFO L87 Difference]: Start difference. First operand 267 states and 395 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:03,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:03,239 INFO L93 Difference]: Finished difference Result 1036 states and 1538 transitions. [2022-11-02 19:58:03,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:03,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:03,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:03,243 INFO L225 Difference]: With dead ends: 1036 [2022-11-02 19:58:03,243 INFO L226 Difference]: Without dead ends: 783 [2022-11-02 19:58:03,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:03,245 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 3685 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3685 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:03,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3685 Valid, 2182 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:03,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-11-02 19:58:03,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 277. [2022-11-02 19:58:03,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.4782608695652173) internal successors, (408), 276 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 408 transitions. [2022-11-02 19:58:03,255 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 408 transitions. Word has length 256 [2022-11-02 19:58:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:03,256 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 408 transitions. [2022-11-02 19:58:03,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 408 transitions. [2022-11-02 19:58:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:03,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:03,259 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:03,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-02 19:58:03,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:03,476 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:03,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:03,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1963521833, now seen corresponding path program 1 times [2022-11-02 19:58:03,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:03,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686257767] [2022-11-02 19:58:03,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:03,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:03,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:03,480 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:03,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 19:58:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:04,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 19:58:04,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:04,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:04,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:04,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:04,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686257767] [2022-11-02 19:58:04,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686257767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:04,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:04,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 19:58:04,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936091072] [2022-11-02 19:58:04,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:04,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 19:58:04,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:04,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 19:58:04,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:58:04,240 INFO L87 Difference]: Start difference. First operand 277 states and 408 transitions. Second operand has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:04,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:04,890 INFO L93 Difference]: Finished difference Result 1542 states and 2291 transitions. [2022-11-02 19:58:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:58:04,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:04,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:04,895 INFO L225 Difference]: With dead ends: 1542 [2022-11-02 19:58:04,895 INFO L226 Difference]: Without dead ends: 1283 [2022-11-02 19:58:04,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:58:04,904 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 4766 mSDsluCounter, 3846 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 4218 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:04,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4766 Valid, 4218 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:58:04,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-11-02 19:58:04,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 285. [2022-11-02 19:58:04,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.471830985915493) internal successors, (418), 284 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 418 transitions. [2022-11-02 19:58:04,923 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 418 transitions. Word has length 256 [2022-11-02 19:58:04,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:04,924 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 418 transitions. [2022-11-02 19:58:04,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:04,924 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 418 transitions. [2022-11-02 19:58:04,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:04,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:04,928 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:04,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:05,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:05,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:05,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:05,146 INFO L85 PathProgramCache]: Analyzing trace with hash -667066919, now seen corresponding path program 1 times [2022-11-02 19:58:05,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:05,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211030802] [2022-11-02 19:58:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:05,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:05,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:05,149 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:05,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 19:58:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:05,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 19:58:05,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:05,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:05,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:05,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211030802] [2022-11-02 19:58:05,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211030802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:05,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:05,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 19:58:05,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037409741] [2022-11-02 19:58:05,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:05,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 19:58:05,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:05,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 19:58:05,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:58:05,894 INFO L87 Difference]: Start difference. First operand 285 states and 418 transitions. Second operand has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:06,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:06,557 INFO L93 Difference]: Finished difference Result 1542 states and 2290 transitions. [2022-11-02 19:58:06,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:58:06,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:06,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:06,563 INFO L225 Difference]: With dead ends: 1542 [2022-11-02 19:58:06,563 INFO L226 Difference]: Without dead ends: 1283 [2022-11-02 19:58:06,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:58:06,564 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 4746 mSDsluCounter, 3822 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4746 SdHoareTripleChecker+Valid, 4202 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:06,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4746 Valid, 4202 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:58:06,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-11-02 19:58:06,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 291. [2022-11-02 19:58:06,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.4689655172413794) internal successors, (426), 290 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 426 transitions. [2022-11-02 19:58:06,577 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 426 transitions. Word has length 256 [2022-11-02 19:58:06,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:06,578 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 426 transitions. [2022-11-02 19:58:06,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:06,578 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 426 transitions. [2022-11-02 19:58:06,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:06,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:06,582 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:06,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:06,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:06,799 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:06,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:06,799 INFO L85 PathProgramCache]: Analyzing trace with hash -635429797, now seen corresponding path program 1 times [2022-11-02 19:58:06,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:06,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795507045] [2022-11-02 19:58:06,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:06,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:06,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:06,801 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:06,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 19:58:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:07,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:07,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:07,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:07,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:07,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795507045] [2022-11-02 19:58:07,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795507045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:07,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:07,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:07,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122275629] [2022-11-02 19:58:07,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:07,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:07,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:07,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:07,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:07,559 INFO L87 Difference]: Start difference. First operand 291 states and 426 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:08,136 INFO L93 Difference]: Finished difference Result 1102 states and 1628 transitions. [2022-11-02 19:58:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:08,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:08,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:08,139 INFO L225 Difference]: With dead ends: 1102 [2022-11-02 19:58:08,139 INFO L226 Difference]: Without dead ends: 843 [2022-11-02 19:58:08,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:08,141 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 3720 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3720 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:08,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3720 Valid, 2204 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-02 19:58:08,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 313. [2022-11-02 19:58:08,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.4615384615384615) internal successors, (456), 312 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 456 transitions. [2022-11-02 19:58:08,165 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 456 transitions. Word has length 256 [2022-11-02 19:58:08,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:08,165 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 456 transitions. [2022-11-02 19:58:08,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:08,166 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 456 transitions. [2022-11-02 19:58:08,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:08,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:08,170 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:08,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:08,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:08,371 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:08,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:08,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1824222371, now seen corresponding path program 1 times [2022-11-02 19:58:08,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:08,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727079878] [2022-11-02 19:58:08,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:08,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:08,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:08,377 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:08,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 19:58:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:08,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:58:08,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:08,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:08,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:08,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727079878] [2022-11-02 19:58:08,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727079878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:08,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:08,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:58:08,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713577264] [2022-11-02 19:58:08,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:08,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:58:08,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:08,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:58:08,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:58:08,957 INFO L87 Difference]: Start difference. First operand 313 states and 456 transitions. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:09,036 INFO L93 Difference]: Finished difference Result 1163 states and 1714 transitions. [2022-11-02 19:58:09,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:58:09,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:09,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:09,040 INFO L225 Difference]: With dead ends: 1163 [2022-11-02 19:58:09,040 INFO L226 Difference]: Without dead ends: 892 [2022-11-02 19:58:09,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:09,041 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 1835 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:09,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1835 Valid, 1537 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:09,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2022-11-02 19:58:09,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 355. [2022-11-02 19:58:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.4576271186440677) internal successors, (516), 354 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 516 transitions. [2022-11-02 19:58:09,055 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 516 transitions. Word has length 256 [2022-11-02 19:58:09,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:09,055 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 516 transitions. [2022-11-02 19:58:09,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:09,056 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 516 transitions. [2022-11-02 19:58:09,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:09,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:09,059 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:09,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:09,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:09,276 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:09,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:09,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1806752607, now seen corresponding path program 1 times [2022-11-02 19:58:09,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:09,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145802972] [2022-11-02 19:58:09,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:09,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:09,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:09,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:09,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 19:58:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:09,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:58:09,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:09,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:09,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:09,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145802972] [2022-11-02 19:58:09,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145802972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:09,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:09,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:58:09,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222189559] [2022-11-02 19:58:09,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:09,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:58:09,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:09,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:58:09,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:58:09,823 INFO L87 Difference]: Start difference. First operand 355 states and 516 transitions. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:09,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:09,910 INFO L93 Difference]: Finished difference Result 1354 states and 1983 transitions. [2022-11-02 19:58:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:58:09,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:09,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:09,916 INFO L225 Difference]: With dead ends: 1354 [2022-11-02 19:58:09,916 INFO L226 Difference]: Without dead ends: 1041 [2022-11-02 19:58:09,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:09,918 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 1799 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:09,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1799 Valid, 1609 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:09,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2022-11-02 19:58:09,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 425. [2022-11-02 19:58:09,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.4504716981132075) internal successors, (615), 424 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:09,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 615 transitions. [2022-11-02 19:58:09,935 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 615 transitions. Word has length 256 [2022-11-02 19:58:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:09,935 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 615 transitions. [2022-11-02 19:58:09,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 615 transitions. [2022-11-02 19:58:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:09,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:09,939 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:09,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:10,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:10,157 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:10,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:10,157 INFO L85 PathProgramCache]: Analyzing trace with hash -51655455, now seen corresponding path program 1 times [2022-11-02 19:58:10,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:10,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854010701] [2022-11-02 19:58:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:10,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:10,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:10,161 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:10,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 19:58:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:10,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 19:58:10,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:10,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:10,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:10,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854010701] [2022-11-02 19:58:10,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854010701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:10,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:10,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 19:58:10,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666966411] [2022-11-02 19:58:10,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:10,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 19:58:10,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:10,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 19:58:10,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:58:10,883 INFO L87 Difference]: Start difference. First operand 425 states and 615 transitions. Second operand has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:11,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:11,511 INFO L93 Difference]: Finished difference Result 1981 states and 2902 transitions. [2022-11-02 19:58:11,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:58:11,512 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:11,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:11,517 INFO L225 Difference]: With dead ends: 1981 [2022-11-02 19:58:11,518 INFO L226 Difference]: Without dead ends: 1598 [2022-11-02 19:58:11,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:58:11,519 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 3914 mSDsluCounter, 4418 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3914 SdHoareTripleChecker+Valid, 4826 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:11,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3914 Valid, 4826 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:58:11,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2022-11-02 19:58:11,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 445. [2022-11-02 19:58:11,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.4436936936936937) internal successors, (641), 444 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 641 transitions. [2022-11-02 19:58:11,538 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 641 transitions. Word has length 256 [2022-11-02 19:58:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:11,538 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 641 transitions. [2022-11-02 19:58:11,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:11,538 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 641 transitions. [2022-11-02 19:58:11,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:11,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:11,542 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:11,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:11,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:11,767 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:11,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:11,768 INFO L85 PathProgramCache]: Analyzing trace with hash 194152419, now seen corresponding path program 1 times [2022-11-02 19:58:11,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:11,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806862718] [2022-11-02 19:58:11,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:11,770 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:11,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:11,771 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:11,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 19:58:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:12,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:12,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:12,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:12,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:12,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806862718] [2022-11-02 19:58:12,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806862718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:12,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:12,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:12,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664719503] [2022-11-02 19:58:12,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:12,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:12,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:12,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:12,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:12,440 INFO L87 Difference]: Start difference. First operand 445 states and 641 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:13,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:13,008 INFO L93 Difference]: Finished difference Result 1556 states and 2260 transitions. [2022-11-02 19:58:13,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:13,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:13,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:13,013 INFO L225 Difference]: With dead ends: 1556 [2022-11-02 19:58:13,013 INFO L226 Difference]: Without dead ends: 1173 [2022-11-02 19:58:13,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:13,015 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 3669 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3669 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:13,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3669 Valid, 2222 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:13,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-11-02 19:58:13,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 497. [2022-11-02 19:58:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.435483870967742) internal successors, (712), 496 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:13,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 712 transitions. [2022-11-02 19:58:13,031 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 712 transitions. Word has length 256 [2022-11-02 19:58:13,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:13,031 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 712 transitions. [2022-11-02 19:58:13,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:13,032 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 712 transitions. [2022-11-02 19:58:13,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:13,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:13,034 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:13,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:13,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:13,251 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:13,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:13,252 INFO L85 PathProgramCache]: Analyzing trace with hash 324016997, now seen corresponding path program 1 times [2022-11-02 19:58:13,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:13,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915135601] [2022-11-02 19:58:13,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:13,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:13,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:13,254 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:13,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 19:58:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:13,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 19:58:13,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:13,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:13,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:13,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915135601] [2022-11-02 19:58:13,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915135601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:13,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:13,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 19:58:13,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818284541] [2022-11-02 19:58:13,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:13,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 19:58:13,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:13,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 19:58:13,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:58:13,926 INFO L87 Difference]: Start difference. First operand 497 states and 712 transitions. Second operand has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:14,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:14,536 INFO L93 Difference]: Finished difference Result 2177 states and 3177 transitions. [2022-11-02 19:58:14,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:58:14,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:14,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:14,543 INFO L225 Difference]: With dead ends: 2177 [2022-11-02 19:58:14,543 INFO L226 Difference]: Without dead ends: 1758 [2022-11-02 19:58:14,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:58:14,553 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 3895 mSDsluCounter, 4382 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3895 SdHoareTripleChecker+Valid, 4798 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:14,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3895 Valid, 4798 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:58:14,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2022-11-02 19:58:14,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 505. [2022-11-02 19:58:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.4325396825396826) internal successors, (722), 504 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:14,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 722 transitions. [2022-11-02 19:58:14,571 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 722 transitions. Word has length 256 [2022-11-02 19:58:14,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:14,572 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 722 transitions. [2022-11-02 19:58:14,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:14,572 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 722 transitions. [2022-11-02 19:58:14,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:14,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:14,574 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:14,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:14,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:14,799 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:14,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:14,799 INFO L85 PathProgramCache]: Analyzing trace with hash -396902425, now seen corresponding path program 1 times [2022-11-02 19:58:14,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:14,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496829014] [2022-11-02 19:58:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:14,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:14,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:14,802 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:14,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 19:58:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:15,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:15,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:15,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:15,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:15,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496829014] [2022-11-02 19:58:15,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496829014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:15,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:15,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:15,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910528511] [2022-11-02 19:58:15,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:15,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:15,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:15,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:15,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:15,522 INFO L87 Difference]: Start difference. First operand 505 states and 722 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:16,069 INFO L93 Difference]: Finished difference Result 1658 states and 2404 transitions. [2022-11-02 19:58:16,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:16,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:16,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:16,073 INFO L225 Difference]: With dead ends: 1658 [2022-11-02 19:58:16,073 INFO L226 Difference]: Without dead ends: 1239 [2022-11-02 19:58:16,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:16,074 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 3684 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3684 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:16,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3684 Valid, 2237 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:16,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-11-02 19:58:16,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 515. [2022-11-02 19:58:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.4299610894941635) internal successors, (735), 514 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:16,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 735 transitions. [2022-11-02 19:58:16,090 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 735 transitions. Word has length 256 [2022-11-02 19:58:16,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:16,090 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 735 transitions. [2022-11-02 19:58:16,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:16,091 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 735 transitions. [2022-11-02 19:58:16,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:16,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:16,093 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:16,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-11-02 19:58:16,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:16,310 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:16,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:16,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1532846871, now seen corresponding path program 1 times [2022-11-02 19:58:16,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:16,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008267190] [2022-11-02 19:58:16,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:16,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:16,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:16,312 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:16,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 19:58:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:58:16,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:16,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:16,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:16,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008267190] [2022-11-02 19:58:16,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008267190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:16,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:16,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:58:16,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866181513] [2022-11-02 19:58:16,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:16,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:58:16,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:16,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:58:16,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:58:16,844 INFO L87 Difference]: Start difference. First operand 515 states and 735 transitions. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:16,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:16,931 INFO L93 Difference]: Finished difference Result 1683 states and 2438 transitions. [2022-11-02 19:58:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:58:16,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:16,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:16,936 INFO L225 Difference]: With dead ends: 1683 [2022-11-02 19:58:16,936 INFO L226 Difference]: Without dead ends: 1258 [2022-11-02 19:58:16,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:16,937 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1802 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:16,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 1584 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:16,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2022-11-02 19:58:16,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 577. [2022-11-02 19:58:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 1.4288194444444444) internal successors, (823), 576 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 823 transitions. [2022-11-02 19:58:16,953 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 823 transitions. Word has length 256 [2022-11-02 19:58:16,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:16,953 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 823 transitions. [2022-11-02 19:58:16,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:16,954 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 823 transitions. [2022-11-02 19:58:16,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:16,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:16,956 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:16,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:17,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:17,180 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:17,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:17,181 INFO L85 PathProgramCache]: Analyzing trace with hash 480998507, now seen corresponding path program 1 times [2022-11-02 19:58:17,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:17,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731773456] [2022-11-02 19:58:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:17,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:17,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:17,183 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:17,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 19:58:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:17,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:58:17,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:17,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:17,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:17,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:17,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731773456] [2022-11-02 19:58:17,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731773456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:17,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:17,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:58:17,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380427894] [2022-11-02 19:58:17,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:17,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:58:17,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:17,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:58:17,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:58:17,780 INFO L87 Difference]: Start difference. First operand 577 states and 823 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:17,838 INFO L93 Difference]: Finished difference Result 1899 states and 2748 transitions. [2022-11-02 19:58:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:58:17,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:17,844 INFO L225 Difference]: With dead ends: 1899 [2022-11-02 19:58:17,844 INFO L226 Difference]: Without dead ends: 1412 [2022-11-02 19:58:17,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:58:17,846 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 961 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:17,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1482 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:17,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2022-11-02 19:58:17,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 741. [2022-11-02 19:58:17,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 1.4297297297297298) internal successors, (1058), 740 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1058 transitions. [2022-11-02 19:58:17,864 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1058 transitions. Word has length 256 [2022-11-02 19:58:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:17,865 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 1058 transitions. [2022-11-02 19:58:17,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1058 transitions. [2022-11-02 19:58:17,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:17,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:17,867 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:17,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:18,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:18,083 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:18,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:18,084 INFO L85 PathProgramCache]: Analyzing trace with hash 604280173, now seen corresponding path program 1 times [2022-11-02 19:58:18,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:18,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230975984] [2022-11-02 19:58:18,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:18,085 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:18,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:18,086 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:18,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 19:58:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:18,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:18,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:18,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:18,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:18,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230975984] [2022-11-02 19:58:18,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230975984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:18,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:18,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:18,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856590981] [2022-11-02 19:58:18,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:18,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:18,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:18,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:18,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:18,948 INFO L87 Difference]: Start difference. First operand 741 states and 1058 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:19,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:19,499 INFO L93 Difference]: Finished difference Result 2252 states and 3247 transitions. [2022-11-02 19:58:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:19,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:19,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:19,504 INFO L225 Difference]: With dead ends: 2252 [2022-11-02 19:58:19,504 INFO L226 Difference]: Without dead ends: 1765 [2022-11-02 19:58:19,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:19,506 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 3234 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3234 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:19,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3234 Valid, 2529 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:19,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2022-11-02 19:58:19,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 771. [2022-11-02 19:58:19,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 1.4272727272727272) internal successors, (1099), 770 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:19,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1099 transitions. [2022-11-02 19:58:19,525 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1099 transitions. Word has length 256 [2022-11-02 19:58:19,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:19,526 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 1099 transitions. [2022-11-02 19:58:19,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:19,526 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1099 transitions. [2022-11-02 19:58:19,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:19,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:19,528 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:19,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:19,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:19,745 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:19,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1507200751, now seen corresponding path program 1 times [2022-11-02 19:58:19,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:19,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484464550] [2022-11-02 19:58:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:19,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:19,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:19,747 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:19,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 19:58:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:20,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:58:20,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:20,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:20,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:20,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:20,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484464550] [2022-11-02 19:58:20,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484464550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:20,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:20,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:58:20,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565524907] [2022-11-02 19:58:20,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:20,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:58:20,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:20,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:58:20,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:58:20,558 INFO L87 Difference]: Start difference. First operand 771 states and 1099 transitions. Second operand has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:20,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:20,632 INFO L93 Difference]: Finished difference Result 1528 states and 2178 transitions. [2022-11-02 19:58:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:58:20,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:20,636 INFO L225 Difference]: With dead ends: 1528 [2022-11-02 19:58:20,636 INFO L226 Difference]: Without dead ends: 1025 [2022-11-02 19:58:20,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:58:20,637 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 32 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:20,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1850 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2022-11-02 19:58:20,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2022-11-02 19:58:20,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1025. [2022-11-02 19:58:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1024 states have (on average 1.4140625) internal successors, (1448), 1024 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1448 transitions. [2022-11-02 19:58:20,655 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1448 transitions. Word has length 256 [2022-11-02 19:58:20,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:20,656 INFO L495 AbstractCegarLoop]: Abstraction has 1025 states and 1448 transitions. [2022-11-02 19:58:20,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1448 transitions. [2022-11-02 19:58:20,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:20,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:20,658 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:20,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:20,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:20,875 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:20,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:20,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1515199725, now seen corresponding path program 1 times [2022-11-02 19:58:20,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:20,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114406161] [2022-11-02 19:58:20,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:20,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:20,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:20,879 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:20,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 19:58:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:21,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:58:21,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:21,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:21,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:21,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114406161] [2022-11-02 19:58:21,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114406161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:21,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:21,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:58:21,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846574124] [2022-11-02 19:58:21,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:21,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:58:21,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:21,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:58:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:58:21,489 INFO L87 Difference]: Start difference. First operand 1025 states and 1448 transitions. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:21,591 INFO L93 Difference]: Finished difference Result 2546 states and 3649 transitions. [2022-11-02 19:58:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:58:21,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:21,598 INFO L225 Difference]: With dead ends: 2546 [2022-11-02 19:58:21,598 INFO L226 Difference]: Without dead ends: 2043 [2022-11-02 19:58:21,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:21,601 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1705 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:21,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 1719 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:21,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2022-11-02 19:58:21,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1243. [2022-11-02 19:58:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 1.4146537842190017) internal successors, (1757), 1242 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1757 transitions. [2022-11-02 19:58:21,630 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1757 transitions. Word has length 256 [2022-11-02 19:58:21,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:21,630 INFO L495 AbstractCegarLoop]: Abstraction has 1243 states and 1757 transitions. [2022-11-02 19:58:21,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:21,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1757 transitions. [2022-11-02 19:58:21,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:21,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:21,633 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:21,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:21,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:21,851 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:21,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:21,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1622235281, now seen corresponding path program 1 times [2022-11-02 19:58:21,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:21,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369679890] [2022-11-02 19:58:21,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:21,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:21,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:21,854 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:21,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 19:58:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:22,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:22,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:22,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:22,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:22,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369679890] [2022-11-02 19:58:22,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369679890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:22,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:22,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:22,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550277012] [2022-11-02 19:58:22,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:22,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:22,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:22,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:22,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:22,592 INFO L87 Difference]: Start difference. First operand 1243 states and 1757 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:23,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:23,151 INFO L93 Difference]: Finished difference Result 2988 states and 4272 transitions. [2022-11-02 19:58:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:23,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:23,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:23,158 INFO L225 Difference]: With dead ends: 2988 [2022-11-02 19:58:23,158 INFO L226 Difference]: Without dead ends: 2381 [2022-11-02 19:58:23,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:23,160 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 3609 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3609 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:23,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3609 Valid, 2259 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:23,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2022-11-02 19:58:23,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 1485. [2022-11-02 19:58:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 1.412398921832884) internal successors, (2096), 1484 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:23,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2096 transitions. [2022-11-02 19:58:23,191 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2096 transitions. Word has length 256 [2022-11-02 19:58:23,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:23,192 INFO L495 AbstractCegarLoop]: Abstraction has 1485 states and 2096 transitions. [2022-11-02 19:58:23,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:23,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2096 transitions. [2022-11-02 19:58:23,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:23,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:23,195 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:23,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-11-02 19:58:23,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:23,412 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:23,412 INFO L85 PathProgramCache]: Analyzing trace with hash 135391857, now seen corresponding path program 1 times [2022-11-02 19:58:23,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:23,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423330012] [2022-11-02 19:58:23,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:23,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:23,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:23,414 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:23,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 19:58:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:23,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:58:23,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:23,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:23,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:23,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423330012] [2022-11-02 19:58:23,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423330012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:23,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:23,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:58:23,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492288982] [2022-11-02 19:58:23,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:23,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:58:23,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:23,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:58:23,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:58:23,987 INFO L87 Difference]: Start difference. First operand 1485 states and 2096 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:24,048 INFO L93 Difference]: Finished difference Result 3107 states and 4438 transitions. [2022-11-02 19:58:24,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:58:24,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:24,068 INFO L225 Difference]: With dead ends: 3107 [2022-11-02 19:58:24,071 INFO L226 Difference]: Without dead ends: 2402 [2022-11-02 19:58:24,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:58:24,077 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 930 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:24,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 1481 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:24,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2022-11-02 19:58:24,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 1525. [2022-11-02 19:58:24,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 1.4094488188976377) internal successors, (2148), 1524 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2148 transitions. [2022-11-02 19:58:24,108 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2148 transitions. Word has length 256 [2022-11-02 19:58:24,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:24,108 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2148 transitions. [2022-11-02 19:58:24,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:24,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2148 transitions. [2022-11-02 19:58:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:24,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:24,111 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:24,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:24,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:24,335 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:24,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1734540915, now seen corresponding path program 1 times [2022-11-02 19:58:24,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:24,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204598213] [2022-11-02 19:58:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:24,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:24,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:24,337 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:24,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 19:58:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:24,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:24,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:25,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:25,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:25,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204598213] [2022-11-02 19:58:25,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204598213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:25,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:25,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:25,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926974577] [2022-11-02 19:58:25,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:25,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:25,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:25,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:25,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:25,181 INFO L87 Difference]: Start difference. First operand 1525 states and 2148 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:25,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:25,727 INFO L93 Difference]: Finished difference Result 3738 states and 5324 transitions. [2022-11-02 19:58:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:25,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:25,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:25,733 INFO L225 Difference]: With dead ends: 3738 [2022-11-02 19:58:25,733 INFO L226 Difference]: Without dead ends: 3033 [2022-11-02 19:58:25,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:25,735 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 3276 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3276 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:25,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3276 Valid, 2544 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:25,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3033 states. [2022-11-02 19:58:25,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3033 to 1583. [2022-11-02 19:58:25,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 1.4051833122629582) internal successors, (2223), 1582 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2223 transitions. [2022-11-02 19:58:25,769 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2223 transitions. Word has length 256 [2022-11-02 19:58:25,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:25,769 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2223 transitions. [2022-11-02 19:58:25,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:25,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2223 transitions. [2022-11-02 19:58:25,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:25,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:25,773 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:25,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:25,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:25,989 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:25,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:25,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1754082037, now seen corresponding path program 1 times [2022-11-02 19:58:25,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:25,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97121856] [2022-11-02 19:58:25,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:25,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:25,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:25,992 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:25,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 19:58:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:26,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:26,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:26,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:26,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:26,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97121856] [2022-11-02 19:58:26,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97121856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:26,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:26,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:26,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387002971] [2022-11-02 19:58:26,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:26,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:26,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:26,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:26,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:26,700 INFO L87 Difference]: Start difference. First operand 1583 states and 2223 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:27,224 INFO L93 Difference]: Finished difference Result 3304 states and 4698 transitions. [2022-11-02 19:58:27,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:27,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:27,229 INFO L225 Difference]: With dead ends: 3304 [2022-11-02 19:58:27,229 INFO L226 Difference]: Without dead ends: 2573 [2022-11-02 19:58:27,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:27,231 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 3625 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3625 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:27,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3625 Valid, 2274 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2022-11-02 19:58:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 1609. [2022-11-02 19:58:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1608 states have (on average 1.404228855721393) internal successors, (2258), 1608 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:27,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2258 transitions. [2022-11-02 19:58:27,263 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2258 transitions. Word has length 256 [2022-11-02 19:58:27,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:27,263 INFO L495 AbstractCegarLoop]: Abstraction has 1609 states and 2258 transitions. [2022-11-02 19:58:27,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:27,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2258 transitions. [2022-11-02 19:58:27,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:27,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:27,266 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:27,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:27,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:27,483 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:27,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1844142327, now seen corresponding path program 1 times [2022-11-02 19:58:27,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:27,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226957763] [2022-11-02 19:58:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:27,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:27,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:27,485 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:27,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 19:58:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:27,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:58:27,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:28,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:28,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:28,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226957763] [2022-11-02 19:58:28,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226957763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:28,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:28,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:58:28,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629701619] [2022-11-02 19:58:28,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:28,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:58:28,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:28,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:58:28,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:58:28,060 INFO L87 Difference]: Start difference. First operand 1609 states and 2258 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:28,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:28,122 INFO L93 Difference]: Finished difference Result 3291 states and 4682 transitions. [2022-11-02 19:58:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:58:28,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:28,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:28,126 INFO L225 Difference]: With dead ends: 3291 [2022-11-02 19:58:28,127 INFO L226 Difference]: Without dead ends: 2542 [2022-11-02 19:58:28,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:58:28,129 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 899 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:28,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1480 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2022-11-02 19:58:28,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 1633. [2022-11-02 19:58:28,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1632 states have (on average 1.4031862745098038) internal successors, (2290), 1632 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:28,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2290 transitions. [2022-11-02 19:58:28,160 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2290 transitions. Word has length 256 [2022-11-02 19:58:28,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:28,161 INFO L495 AbstractCegarLoop]: Abstraction has 1633 states and 2290 transitions. [2022-11-02 19:58:28,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:28,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2290 transitions. [2022-11-02 19:58:28,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:28,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:28,164 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:28,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:28,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:28,380 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:28,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:28,380 INFO L85 PathProgramCache]: Analyzing trace with hash -79108103, now seen corresponding path program 1 times [2022-11-02 19:58:28,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:28,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894816024] [2022-11-02 19:58:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:28,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:28,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:28,383 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:28,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 19:58:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:28,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:28,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:29,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:29,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:29,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894816024] [2022-11-02 19:58:29,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894816024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:29,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:29,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:29,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68182590] [2022-11-02 19:58:29,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:29,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:29,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:29,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:29,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:29,251 INFO L87 Difference]: Start difference. First operand 1633 states and 2290 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:29,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:29,805 INFO L93 Difference]: Finished difference Result 3938 states and 5598 transitions. [2022-11-02 19:58:29,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:29,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:29,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:29,810 INFO L225 Difference]: With dead ends: 3938 [2022-11-02 19:58:29,810 INFO L226 Difference]: Without dead ends: 3189 [2022-11-02 19:58:29,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:29,812 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 3318 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3318 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:29,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3318 Valid, 2565 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:29,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2022-11-02 19:58:29,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 1667. [2022-11-02 19:58:29,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 1.4027611044417767) internal successors, (2337), 1666 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:29,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2337 transitions. [2022-11-02 19:58:29,847 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2337 transitions. Word has length 256 [2022-11-02 19:58:29,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:29,848 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 2337 transitions. [2022-11-02 19:58:29,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:29,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2337 transitions. [2022-11-02 19:58:29,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:29,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:29,851 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:29,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:30,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:30,067 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:30,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:30,068 INFO L85 PathProgramCache]: Analyzing trace with hash 419448699, now seen corresponding path program 1 times [2022-11-02 19:58:30,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:30,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345197252] [2022-11-02 19:58:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:30,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:30,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:30,069 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:30,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 19:58:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:30,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 19:58:30,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:30,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:30,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:30,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345197252] [2022-11-02 19:58:30,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345197252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:30,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:30,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 19:58:30,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263318939] [2022-11-02 19:58:30,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:30,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 19:58:30,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:30,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 19:58:30,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:58:30,702 INFO L87 Difference]: Start difference. First operand 1667 states and 2337 transitions. Second operand has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:31,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:31,278 INFO L93 Difference]: Finished difference Result 3933 states and 5591 transitions. [2022-11-02 19:58:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:58:31,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:31,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:31,284 INFO L225 Difference]: With dead ends: 3933 [2022-11-02 19:58:31,284 INFO L226 Difference]: Without dead ends: 3166 [2022-11-02 19:58:31,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:58:31,286 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 3664 mSDsluCounter, 4090 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3664 SdHoareTripleChecker+Valid, 4575 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:31,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3664 Valid, 4575 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:58:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2022-11-02 19:58:31,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 1827. [2022-11-02 19:58:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1826 states have (on average 1.3926615553121577) internal successors, (2543), 1826 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2543 transitions. [2022-11-02 19:58:31,320 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2543 transitions. Word has length 256 [2022-11-02 19:58:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:31,320 INFO L495 AbstractCegarLoop]: Abstraction has 1827 states and 2543 transitions. [2022-11-02 19:58:31,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2543 transitions. [2022-11-02 19:58:31,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:31,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:31,324 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:31,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:31,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:31,540 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:31,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:31,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1086830589, now seen corresponding path program 1 times [2022-11-02 19:58:31,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:31,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802080937] [2022-11-02 19:58:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:31,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:31,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:31,543 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:31,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 19:58:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:31,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:31,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:32,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:32,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:32,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802080937] [2022-11-02 19:58:32,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802080937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:32,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:32,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:32,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259533600] [2022-11-02 19:58:32,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:32,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:32,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:32,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:32,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:32,224 INFO L87 Difference]: Start difference. First operand 1827 states and 2543 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:32,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:32,754 INFO L93 Difference]: Finished difference Result 3672 states and 5192 transitions. [2022-11-02 19:58:32,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:32,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:32,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:32,759 INFO L225 Difference]: With dead ends: 3672 [2022-11-02 19:58:32,759 INFO L226 Difference]: Without dead ends: 2905 [2022-11-02 19:58:32,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:32,761 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 3642 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3642 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:32,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3642 Valid, 2295 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:32,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2022-11-02 19:58:32,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1869. [2022-11-02 19:58:32,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1868 states have (on average 1.3907922912205568) internal successors, (2598), 1868 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:32,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2598 transitions. [2022-11-02 19:58:32,792 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2598 transitions. Word has length 256 [2022-11-02 19:58:32,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:32,792 INFO L495 AbstractCegarLoop]: Abstraction has 1869 states and 2598 transitions. [2022-11-02 19:58:32,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:32,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2598 transitions. [2022-11-02 19:58:32,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:32,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:32,796 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:32,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:33,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:33,012 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:33,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:33,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1431658751, now seen corresponding path program 1 times [2022-11-02 19:58:33,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:33,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119828532] [2022-11-02 19:58:33,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:33,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:33,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:33,015 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:33,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 19:58:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:33,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:58:33,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:33,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:33,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:33,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119828532] [2022-11-02 19:58:33,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119828532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:33,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:33,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:58:33,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532047922] [2022-11-02 19:58:33,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:33,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:58:33,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:33,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:58:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:58:33,617 INFO L87 Difference]: Start difference. First operand 1869 states and 2598 transitions. Second operand has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:33,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:33,778 INFO L93 Difference]: Finished difference Result 4519 states and 6340 transitions. [2022-11-02 19:58:33,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:58:33,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:33,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:33,783 INFO L225 Difference]: With dead ends: 4519 [2022-11-02 19:58:33,784 INFO L226 Difference]: Without dead ends: 3734 [2022-11-02 19:58:33,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:33,787 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 1017 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:33,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 2561 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 19 Unchecked, 0.1s Time] [2022-11-02 19:58:33,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2022-11-02 19:58:33,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 2463. [2022-11-02 19:58:33,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 2462 states have (on average 1.376523151909017) internal successors, (3389), 2462 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 3389 transitions. [2022-11-02 19:58:33,833 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 3389 transitions. Word has length 256 [2022-11-02 19:58:33,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:33,834 INFO L495 AbstractCegarLoop]: Abstraction has 2463 states and 3389 transitions. [2022-11-02 19:58:33,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:33,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 3389 transitions. [2022-11-02 19:58:33,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:33,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:33,839 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:33,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:34,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:34,055 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1416727679, now seen corresponding path program 1 times [2022-11-02 19:58:34,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:34,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993848336] [2022-11-02 19:58:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:34,057 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:34,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:34,058 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:34,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 19:58:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:34,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:58:34,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:34,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:34,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:34,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993848336] [2022-11-02 19:58:34,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993848336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:34,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:34,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:58:34,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231109829] [2022-11-02 19:58:34,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:34,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:58:34,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:34,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:58:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:58:34,629 INFO L87 Difference]: Start difference. First operand 2463 states and 3389 transitions. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:34,721 INFO L93 Difference]: Finished difference Result 4587 states and 6432 transitions. [2022-11-02 19:58:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:58:34,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:34,729 INFO L225 Difference]: With dead ends: 4587 [2022-11-02 19:58:34,729 INFO L226 Difference]: Without dead ends: 3802 [2022-11-02 19:58:34,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:34,731 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 1758 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:34,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1758 Valid, 1654 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:34,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2022-11-02 19:58:34,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 2673. [2022-11-02 19:58:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2673 states, 2672 states have (on average 1.3787425149700598) internal successors, (3684), 2672 states have internal predecessors, (3684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:34,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2673 states to 2673 states and 3684 transitions. [2022-11-02 19:58:34,770 INFO L78 Accepts]: Start accepts. Automaton has 2673 states and 3684 transitions. Word has length 256 [2022-11-02 19:58:34,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:34,771 INFO L495 AbstractCegarLoop]: Abstraction has 2673 states and 3684 transitions. [2022-11-02 19:58:34,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:34,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2673 states and 3684 transitions. [2022-11-02 19:58:34,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:34,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:34,775 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:34,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:34,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:34,992 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:34,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:34,992 INFO L85 PathProgramCache]: Analyzing trace with hash 480251779, now seen corresponding path program 1 times [2022-11-02 19:58:34,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:34,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389583633] [2022-11-02 19:58:34,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:34,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:34,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:34,995 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:35,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 19:58:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:35,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 19:58:35,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:35,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:35,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:35,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389583633] [2022-11-02 19:58:35,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389583633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:35,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:35,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:35,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616061330] [2022-11-02 19:58:35,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:35,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:35,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:35,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:35,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:35,696 INFO L87 Difference]: Start difference. First operand 2673 states and 3684 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:36,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:36,246 INFO L93 Difference]: Finished difference Result 6127 states and 8644 transitions. [2022-11-02 19:58:36,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 19:58:36,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:36,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:36,250 INFO L225 Difference]: With dead ends: 6127 [2022-11-02 19:58:36,250 INFO L226 Difference]: Without dead ends: 5142 [2022-11-02 19:58:36,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2022-11-02 19:58:36,253 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 5559 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5559 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:36,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5559 Valid, 2671 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:36,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5142 states. [2022-11-02 19:58:36,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5142 to 2697. [2022-11-02 19:58:36,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 2696 states have (on average 1.3783382789317506) internal successors, (3716), 2696 states have internal predecessors, (3716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 3716 transitions. [2022-11-02 19:58:36,300 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 3716 transitions. Word has length 256 [2022-11-02 19:58:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:36,301 INFO L495 AbstractCegarLoop]: Abstraction has 2697 states and 3716 transitions. [2022-11-02 19:58:36,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 3716 transitions. [2022-11-02 19:58:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:36,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:36,305 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:36,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-02 19:58:36,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:36,518 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:36,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:36,519 INFO L85 PathProgramCache]: Analyzing trace with hash 324271237, now seen corresponding path program 1 times [2022-11-02 19:58:36,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:36,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894941485] [2022-11-02 19:58:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:36,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:36,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:36,521 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:36,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 19:58:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:36,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:58:36,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:37,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:37,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:37,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894941485] [2022-11-02 19:58:37,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894941485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:37,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:37,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:58:37,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169783133] [2022-11-02 19:58:37,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:37,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:58:37,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:37,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:58:37,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:58:37,315 INFO L87 Difference]: Start difference. First operand 2697 states and 3716 transitions. Second operand has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:37,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:37,396 INFO L93 Difference]: Finished difference Result 4472 states and 6116 transitions. [2022-11-02 19:58:37,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:58:37,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:37,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:37,400 INFO L225 Difference]: With dead ends: 4472 [2022-11-02 19:58:37,400 INFO L226 Difference]: Without dead ends: 3467 [2022-11-02 19:58:37,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:58:37,402 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 53 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:37,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1826 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-11-02 19:58:37,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3467 states. [2022-11-02 19:58:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3467 to 3467. [2022-11-02 19:58:37,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3467 states, 3466 states have (on average 1.3499711482977497) internal successors, (4679), 3466 states have internal predecessors, (4679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3467 states to 3467 states and 4679 transitions. [2022-11-02 19:58:37,448 INFO L78 Accepts]: Start accepts. Automaton has 3467 states and 4679 transitions. Word has length 256 [2022-11-02 19:58:37,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:37,448 INFO L495 AbstractCegarLoop]: Abstraction has 3467 states and 4679 transitions. [2022-11-02 19:58:37,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:37,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3467 states and 4679 transitions. [2022-11-02 19:58:37,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:37,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:37,454 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:37,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:37,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:37,671 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:37,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:37,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2112141059, now seen corresponding path program 1 times [2022-11-02 19:58:37,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:37,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785324770] [2022-11-02 19:58:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:37,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:37,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:37,673 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:37,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 19:58:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:38,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:58:38,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:38,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:38,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:38,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785324770] [2022-11-02 19:58:38,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785324770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:38,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:38,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:58:38,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985446501] [2022-11-02 19:58:38,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:38,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:58:38,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:38,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:58:38,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:58:38,267 INFO L87 Difference]: Start difference. First operand 3467 states and 4679 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:38,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:38,341 INFO L93 Difference]: Finished difference Result 5685 states and 7855 transitions. [2022-11-02 19:58:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:58:38,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:38,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:38,345 INFO L225 Difference]: With dead ends: 5685 [2022-11-02 19:58:38,345 INFO L226 Difference]: Without dead ends: 4680 [2022-11-02 19:58:38,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:58:38,348 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 828 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:38,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1479 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:38,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2022-11-02 19:58:38,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 3543. [2022-11-02 19:58:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 3542 states have (on average 1.3509316770186335) internal successors, (4785), 3542 states have internal predecessors, (4785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:38,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 4785 transitions. [2022-11-02 19:58:38,402 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 4785 transitions. Word has length 256 [2022-11-02 19:58:38,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:38,402 INFO L495 AbstractCegarLoop]: Abstraction has 3543 states and 4785 transitions. [2022-11-02 19:58:38,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:38,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 4785 transitions. [2022-11-02 19:58:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:38,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:38,408 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:38,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:38,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:38,624 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2113178363, now seen corresponding path program 1 times [2022-11-02 19:58:38,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:38,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309378992] [2022-11-02 19:58:38,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:38,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:38,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:38,626 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:38,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 19:58:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:39,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:39,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:39,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:39,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:39,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309378992] [2022-11-02 19:58:39,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309378992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:39,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:39,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:39,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609293044] [2022-11-02 19:58:39,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:39,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:39,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:39,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:39,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:39,430 INFO L87 Difference]: Start difference. First operand 3543 states and 4785 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:39,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:39,977 INFO L93 Difference]: Finished difference Result 6560 states and 9082 transitions. [2022-11-02 19:58:39,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:39,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:39,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:39,982 INFO L225 Difference]: With dead ends: 6560 [2022-11-02 19:58:39,982 INFO L226 Difference]: Without dead ends: 5555 [2022-11-02 19:58:39,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:39,985 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 3188 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3188 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:39,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3188 Valid, 2591 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5555 states. [2022-11-02 19:58:40,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5555 to 3851. [2022-11-02 19:58:40,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3850 states have (on average 1.352987012987013) internal successors, (5209), 3850 states have internal predecessors, (5209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5209 transitions. [2022-11-02 19:58:40,058 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5209 transitions. Word has length 256 [2022-11-02 19:58:40,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:40,058 INFO L495 AbstractCegarLoop]: Abstraction has 3851 states and 5209 transitions. [2022-11-02 19:58:40,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:40,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5209 transitions. [2022-11-02 19:58:40,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:40,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:40,067 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:40,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-02 19:58:40,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:40,283 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:40,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:40,283 INFO L85 PathProgramCache]: Analyzing trace with hash -714224761, now seen corresponding path program 1 times [2022-11-02 19:58:40,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:40,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013388335] [2022-11-02 19:58:40,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:40,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:40,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:40,285 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:40,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 19:58:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:40,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 19:58:40,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:40,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:40,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:40,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013388335] [2022-11-02 19:58:40,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013388335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:40,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:40,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:40,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69926825] [2022-11-02 19:58:40,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:40,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:40,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:40,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:40,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:40,949 INFO L87 Difference]: Start difference. First operand 3851 states and 5209 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:41,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:41,534 INFO L93 Difference]: Finished difference Result 7431 states and 10341 transitions. [2022-11-02 19:58:41,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 19:58:41,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:41,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:41,540 INFO L225 Difference]: With dead ends: 7431 [2022-11-02 19:58:41,540 INFO L226 Difference]: Without dead ends: 6348 [2022-11-02 19:58:41,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2022-11-02 19:58:41,543 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 5572 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5572 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:41,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5572 Valid, 2681 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:41,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2022-11-02 19:58:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 3877. [2022-11-02 19:58:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3877 states, 3876 states have (on average 1.3524251805985552) internal successors, (5242), 3876 states have internal predecessors, (5242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3877 states to 3877 states and 5242 transitions. [2022-11-02 19:58:41,599 INFO L78 Accepts]: Start accepts. Automaton has 3877 states and 5242 transitions. Word has length 256 [2022-11-02 19:58:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:41,600 INFO L495 AbstractCegarLoop]: Abstraction has 3877 states and 5242 transitions. [2022-11-02 19:58:41,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3877 states and 5242 transitions. [2022-11-02 19:58:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:41,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:41,606 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:41,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-02 19:58:41,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:41,822 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:41,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:41,823 INFO L85 PathProgramCache]: Analyzing trace with hash -350758263, now seen corresponding path program 1 times [2022-11-02 19:58:41,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:41,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509853249] [2022-11-02 19:58:41,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:41,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:41,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:41,824 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:41,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 19:58:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:42,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:58:42,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:42,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:42,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:42,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509853249] [2022-11-02 19:58:42,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509853249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:42,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:42,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:58:42,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776764441] [2022-11-02 19:58:42,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:42,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:58:42,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:42,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:58:42,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:58:42,405 INFO L87 Difference]: Start difference. First operand 3877 states and 5242 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:42,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:42,476 INFO L93 Difference]: Finished difference Result 6211 states and 8580 transitions. [2022-11-02 19:58:42,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:58:42,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:42,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:42,481 INFO L225 Difference]: With dead ends: 6211 [2022-11-02 19:58:42,481 INFO L226 Difference]: Without dead ends: 5114 [2022-11-02 19:58:42,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:58:42,483 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 807 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:42,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 1478 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:42,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5114 states. [2022-11-02 19:58:42,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5114 to 3893. [2022-11-02 19:58:42,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3893 states, 3892 states have (on average 1.3520041109969168) internal successors, (5262), 3892 states have internal predecessors, (5262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3893 states to 3893 states and 5262 transitions. [2022-11-02 19:58:42,533 INFO L78 Accepts]: Start accepts. Automaton has 3893 states and 5262 transitions. Word has length 256 [2022-11-02 19:58:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:42,533 INFO L495 AbstractCegarLoop]: Abstraction has 3893 states and 5262 transitions. [2022-11-02 19:58:42,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:42,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3893 states and 5262 transitions. [2022-11-02 19:58:42,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:42,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:42,539 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:42,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-02 19:58:42,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:42,755 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:42,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:42,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1298810229, now seen corresponding path program 1 times [2022-11-02 19:58:42,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:42,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259358725] [2022-11-02 19:58:42,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:42,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:42,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:42,757 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:42,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 19:58:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:43,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:43,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:43,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:43,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:43,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:43,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259358725] [2022-11-02 19:58:43,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259358725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:43,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:43,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:43,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374704502] [2022-11-02 19:58:43,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:43,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:43,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:43,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:43,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:43,588 INFO L87 Difference]: Start difference. First operand 3893 states and 5262 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:44,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:44,119 INFO L93 Difference]: Finished difference Result 6896 states and 9544 transitions. [2022-11-02 19:58:44,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:44,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:44,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:44,124 INFO L225 Difference]: With dead ends: 6896 [2022-11-02 19:58:44,124 INFO L226 Difference]: Without dead ends: 5799 [2022-11-02 19:58:44,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:44,127 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 3234 mSDsluCounter, 2075 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3234 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:44,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3234 Valid, 2601 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:44,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2022-11-02 19:58:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 3911. [2022-11-02 19:58:44,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3911 states, 3910 states have (on average 1.3516624040920715) internal successors, (5285), 3910 states have internal predecessors, (5285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 5285 transitions. [2022-11-02 19:58:44,168 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 5285 transitions. Word has length 256 [2022-11-02 19:58:44,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:44,169 INFO L495 AbstractCegarLoop]: Abstraction has 3911 states and 5285 transitions. [2022-11-02 19:58:44,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:44,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 5285 transitions. [2022-11-02 19:58:44,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:44,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:44,174 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:44,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:44,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:44,391 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:44,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:44,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1733315827, now seen corresponding path program 1 times [2022-11-02 19:58:44,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:44,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679802948] [2022-11-02 19:58:44,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:44,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:44,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:44,393 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:44,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 19:58:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:44,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 19:58:44,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:45,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:45,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:45,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679802948] [2022-11-02 19:58:45,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679802948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:45,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:45,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:45,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669610313] [2022-11-02 19:58:45,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:45,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:45,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:45,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:45,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:45,400 INFO L87 Difference]: Start difference. First operand 3911 states and 5285 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:45,564 INFO L93 Difference]: Finished difference Result 9051 states and 12610 transitions. [2022-11-02 19:58:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:58:45,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:45,572 INFO L225 Difference]: With dead ends: 9051 [2022-11-02 19:58:45,572 INFO L226 Difference]: Without dead ends: 7944 [2022-11-02 19:58:45,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-02 19:58:45,576 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 2162 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 3743 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:45,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 3743 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2022-11-02 19:58:45,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7944 states. [2022-11-02 19:58:45,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7944 to 3925. [2022-11-02 19:58:45,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3925 states, 3924 states have (on average 1.3511722731906217) internal successors, (5302), 3924 states have internal predecessors, (5302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:45,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3925 states to 3925 states and 5302 transitions. [2022-11-02 19:58:45,637 INFO L78 Accepts]: Start accepts. Automaton has 3925 states and 5302 transitions. Word has length 256 [2022-11-02 19:58:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:45,637 INFO L495 AbstractCegarLoop]: Abstraction has 3925 states and 5302 transitions. [2022-11-02 19:58:45,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:45,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3925 states and 5302 transitions. [2022-11-02 19:58:45,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:45,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:45,654 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:45,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:45,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:45,871 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:45,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:45,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1855054863, now seen corresponding path program 1 times [2022-11-02 19:58:45,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:45,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411153138] [2022-11-02 19:58:45,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:45,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:45,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:45,873 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:45,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 19:58:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:46,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:46,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:46,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:46,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:46,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411153138] [2022-11-02 19:58:46,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411153138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:46,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:46,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:46,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840944314] [2022-11-02 19:58:46,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:46,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:46,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:46,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:46,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:46,748 INFO L87 Difference]: Start difference. First operand 3925 states and 5302 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:47,261 INFO L93 Difference]: Finished difference Result 7026 states and 9722 transitions. [2022-11-02 19:58:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:47,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:47,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:47,265 INFO L225 Difference]: With dead ends: 7026 [2022-11-02 19:58:47,265 INFO L226 Difference]: Without dead ends: 5919 [2022-11-02 19:58:47,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:47,267 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 3272 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3272 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:47,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3272 Valid, 2620 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:47,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5919 states. [2022-11-02 19:58:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5919 to 3935. [2022-11-02 19:58:47,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3935 states, 3934 states have (on average 1.3510421962379258) internal successors, (5315), 3934 states have internal predecessors, (5315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:47,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3935 states to 3935 states and 5315 transitions. [2022-11-02 19:58:47,337 INFO L78 Accepts]: Start accepts. Automaton has 3935 states and 5315 transitions. Word has length 256 [2022-11-02 19:58:47,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:47,338 INFO L495 AbstractCegarLoop]: Abstraction has 3935 states and 5315 transitions. [2022-11-02 19:58:47,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:47,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3935 states and 5315 transitions. [2022-11-02 19:58:47,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:47,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:47,343 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:47,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:47,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:47,559 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:47,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:47,559 INFO L85 PathProgramCache]: Analyzing trace with hash 572882577, now seen corresponding path program 1 times [2022-11-02 19:58:47,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:47,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884009582] [2022-11-02 19:58:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:47,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:47,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:47,561 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:47,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 19:58:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:47,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:58:47,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:48,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:48,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:48,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884009582] [2022-11-02 19:58:48,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884009582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:48,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:48,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:58:48,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026354248] [2022-11-02 19:58:48,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:48,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:58:48,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:58:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:58:48,220 INFO L87 Difference]: Start difference. First operand 3935 states and 5315 transitions. Second operand has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:48,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:48,381 INFO L93 Difference]: Finished difference Result 6831 states and 9430 transitions. [2022-11-02 19:58:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:58:48,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:48,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:48,386 INFO L225 Difference]: With dead ends: 6831 [2022-11-02 19:58:48,386 INFO L226 Difference]: Without dead ends: 5716 [2022-11-02 19:58:48,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:48,389 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 919 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:48,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 2722 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 20 Unchecked, 0.1s Time] [2022-11-02 19:58:48,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5716 states. [2022-11-02 19:58:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5716 to 4153. [2022-11-02 19:58:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4153 states, 4152 states have (on average 1.3506743737957612) internal successors, (5608), 4152 states have internal predecessors, (5608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 5608 transitions. [2022-11-02 19:58:48,441 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 5608 transitions. Word has length 256 [2022-11-02 19:58:48,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:48,441 INFO L495 AbstractCegarLoop]: Abstraction has 4153 states and 5608 transitions. [2022-11-02 19:58:48,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 5608 transitions. [2022-11-02 19:58:48,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:48,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:48,447 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:48,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:48,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:48,660 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:48,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:48,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1994939757, now seen corresponding path program 1 times [2022-11-02 19:58:48,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:48,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559063019] [2022-11-02 19:58:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:48,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:48,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:48,663 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:48,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 19:58:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:49,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 19:58:49,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:49,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:49,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:49,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:49,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559063019] [2022-11-02 19:58:49,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559063019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:49,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:49,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:58:49,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072419565] [2022-11-02 19:58:49,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:49,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:58:49,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:49,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:58:49,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:58:49,729 INFO L87 Difference]: Start difference. First operand 4153 states and 5608 transitions. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:49,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:49,888 INFO L93 Difference]: Finished difference Result 6422 states and 8842 transitions. [2022-11-02 19:58:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:58:49,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:49,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:49,892 INFO L225 Difference]: With dead ends: 6422 [2022-11-02 19:58:49,893 INFO L226 Difference]: Without dead ends: 5307 [2022-11-02 19:58:49,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:58:49,895 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 1574 mSDsluCounter, 2279 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:49,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 2858 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2022-11-02 19:58:49,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5307 states. [2022-11-02 19:58:49,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5307 to 4163. [2022-11-02 19:58:49,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4163 states, 4162 states have (on average 1.350552618933205) internal successors, (5621), 4162 states have internal predecessors, (5621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4163 states to 4163 states and 5621 transitions. [2022-11-02 19:58:49,982 INFO L78 Accepts]: Start accepts. Automaton has 4163 states and 5621 transitions. Word has length 256 [2022-11-02 19:58:49,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:49,982 INFO L495 AbstractCegarLoop]: Abstraction has 4163 states and 5621 transitions. [2022-11-02 19:58:49,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:49,982 INFO L276 IsEmpty]: Start isEmpty. Operand 4163 states and 5621 transitions. [2022-11-02 19:58:49,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:49,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:49,988 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:50,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:50,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:50,204 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:50,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:50,205 INFO L85 PathProgramCache]: Analyzing trace with hash 146920721, now seen corresponding path program 1 times [2022-11-02 19:58:50,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:50,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126098378] [2022-11-02 19:58:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:50,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:50,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:50,206 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:50,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 19:58:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:50,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:58:50,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:50,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:50,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:50,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126098378] [2022-11-02 19:58:50,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126098378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:50,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:50,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:58:50,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928609889] [2022-11-02 19:58:50,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:50,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:58:50,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:50,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:58:50,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:58:50,803 INFO L87 Difference]: Start difference. First operand 4163 states and 5621 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:50,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:50,862 INFO L93 Difference]: Finished difference Result 6551 states and 9032 transitions. [2022-11-02 19:58:50,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:58:50,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:50,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:50,867 INFO L225 Difference]: With dead ends: 6551 [2022-11-02 19:58:50,867 INFO L226 Difference]: Without dead ends: 5428 [2022-11-02 19:58:50,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:58:50,869 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 741 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:50,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1477 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:50,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5428 states. [2022-11-02 19:58:50,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5428 to 4207. [2022-11-02 19:58:50,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4207 states, 4206 states have (on average 1.3511650023775559) internal successors, (5683), 4206 states have internal predecessors, (5683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4207 states to 4207 states and 5683 transitions. [2022-11-02 19:58:50,912 INFO L78 Accepts]: Start accepts. Automaton has 4207 states and 5683 transitions. Word has length 256 [2022-11-02 19:58:50,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:50,913 INFO L495 AbstractCegarLoop]: Abstraction has 4207 states and 5683 transitions. [2022-11-02 19:58:50,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:50,913 INFO L276 IsEmpty]: Start isEmpty. Operand 4207 states and 5683 transitions. [2022-11-02 19:58:50,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:50,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:50,918 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:50,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-02 19:58:51,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:51,135 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:51,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:51,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1886473325, now seen corresponding path program 1 times [2022-11-02 19:58:51,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:51,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509681685] [2022-11-02 19:58:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:51,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:51,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:51,137 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:51,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 19:58:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:51,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:51,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:51,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:51,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:51,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:51,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509681685] [2022-11-02 19:58:51,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509681685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:51,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:51,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:51,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449671342] [2022-11-02 19:58:51,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:51,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:51,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:51,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:51,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:51,949 INFO L87 Difference]: Start difference. First operand 4207 states and 5683 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:52,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:52,473 INFO L93 Difference]: Finished difference Result 7124 states and 9842 transitions. [2022-11-02 19:58:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:52,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:52,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:52,478 INFO L225 Difference]: With dead ends: 7124 [2022-11-02 19:58:52,479 INFO L226 Difference]: Without dead ends: 6001 [2022-11-02 19:58:52,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:52,481 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 3152 mSDsluCounter, 2071 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3152 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:52,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3152 Valid, 2631 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:52,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2022-11-02 19:58:52,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 4265. [2022-11-02 19:58:52,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4265 states, 4264 states have (on average 1.351782363977486) internal successors, (5764), 4264 states have internal predecessors, (5764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:52,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4265 states to 4265 states and 5764 transitions. [2022-11-02 19:58:52,534 INFO L78 Accepts]: Start accepts. Automaton has 4265 states and 5764 transitions. Word has length 256 [2022-11-02 19:58:52,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:52,535 INFO L495 AbstractCegarLoop]: Abstraction has 4265 states and 5764 transitions. [2022-11-02 19:58:52,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:52,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4265 states and 5764 transitions. [2022-11-02 19:58:52,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:52,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:52,541 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:52,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:52,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:52,757 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:52,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1101351573, now seen corresponding path program 1 times [2022-11-02 19:58:52,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:52,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842056899] [2022-11-02 19:58:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:52,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:52,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:52,759 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:52,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 19:58:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:53,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:58:53,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:53,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:53,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:53,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842056899] [2022-11-02 19:58:53,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842056899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:53,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:53,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:58:53,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641780728] [2022-11-02 19:58:53,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:53,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:58:53,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:53,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:58:53,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:58:53,364 INFO L87 Difference]: Start difference. First operand 4265 states and 5764 transitions. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:53,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:53,463 INFO L93 Difference]: Finished difference Result 8380 states and 11552 transitions. [2022-11-02 19:58:53,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:58:53,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:53,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:53,467 INFO L225 Difference]: With dead ends: 8380 [2022-11-02 19:58:53,467 INFO L226 Difference]: Without dead ends: 7231 [2022-11-02 19:58:53,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:53,470 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 1496 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:53,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1967 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:53,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7231 states. [2022-11-02 19:58:53,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7231 to 5555. [2022-11-02 19:58:53,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5555 states, 5554 states have (on average 1.3548793662225422) internal successors, (7525), 5554 states have internal predecessors, (7525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:53,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5555 states to 5555 states and 7525 transitions. [2022-11-02 19:58:53,518 INFO L78 Accepts]: Start accepts. Automaton has 5555 states and 7525 transitions. Word has length 256 [2022-11-02 19:58:53,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:53,518 INFO L495 AbstractCegarLoop]: Abstraction has 5555 states and 7525 transitions. [2022-11-02 19:58:53,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:53,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5555 states and 7525 transitions. [2022-11-02 19:58:53,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:53,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:53,525 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:53,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:53,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:53,738 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:53,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:53,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2132392471, now seen corresponding path program 1 times [2022-11-02 19:58:53,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:53,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059479694] [2022-11-02 19:58:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:53,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:53,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:53,741 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:53,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 19:58:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:54,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:54,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:54,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:54,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:54,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059479694] [2022-11-02 19:58:54,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059479694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:54,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:54,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:54,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303121597] [2022-11-02 19:58:54,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:54,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:54,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:54,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:54,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:54,584 INFO L87 Difference]: Start difference. First operand 5555 states and 7525 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:55,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:55,118 INFO L93 Difference]: Finished difference Result 10712 states and 14794 transitions. [2022-11-02 19:58:55,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:55,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:55,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:55,126 INFO L225 Difference]: With dead ends: 10712 [2022-11-02 19:58:55,126 INFO L226 Difference]: Without dead ends: 9145 [2022-11-02 19:58:55,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:55,130 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 3547 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3547 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:55,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3547 Valid, 2363 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9145 states. [2022-11-02 19:58:55,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9145 to 7049. [2022-11-02 19:58:55,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7049 states, 7048 states have (on average 1.358967082860386) internal successors, (9578), 7048 states have internal predecessors, (9578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7049 states to 7049 states and 9578 transitions. [2022-11-02 19:58:55,203 INFO L78 Accepts]: Start accepts. Automaton has 7049 states and 9578 transitions. Word has length 256 [2022-11-02 19:58:55,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:55,203 INFO L495 AbstractCegarLoop]: Abstraction has 7049 states and 9578 transitions. [2022-11-02 19:58:55,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:55,203 INFO L276 IsEmpty]: Start isEmpty. Operand 7049 states and 9578 transitions. [2022-11-02 19:58:55,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:55,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:55,208 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:55,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:55,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:55,409 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:55,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:55,410 INFO L85 PathProgramCache]: Analyzing trace with hash -561503719, now seen corresponding path program 1 times [2022-11-02 19:58:55,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:55,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401495415] [2022-11-02 19:58:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:55,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:55,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:55,412 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:55,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 19:58:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:55,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:58:55,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:56,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:56,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:56,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401495415] [2022-11-02 19:58:56,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401495415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:56,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:56,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:58:56,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33554720] [2022-11-02 19:58:56,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:56,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:58:56,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:56,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:58:56,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:58:56,060 INFO L87 Difference]: Start difference. First operand 7049 states and 9578 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:56,137 INFO L93 Difference]: Finished difference Result 11147 states and 15410 transitions. [2022-11-02 19:58:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:58:56,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:56,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:56,144 INFO L225 Difference]: With dead ends: 11147 [2022-11-02 19:58:56,144 INFO L226 Difference]: Without dead ends: 9158 [2022-11-02 19:58:56,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:58:56,147 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 710 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:56,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 1476 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9158 states. [2022-11-02 19:58:56,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9158 to 7083. [2022-11-02 19:58:56,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7083 states, 7082 states have (on average 1.3585145439141486) internal successors, (9621), 7082 states have internal predecessors, (9621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:56,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7083 states to 7083 states and 9621 transitions. [2022-11-02 19:58:56,210 INFO L78 Accepts]: Start accepts. Automaton has 7083 states and 9621 transitions. Word has length 256 [2022-11-02 19:58:56,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:56,210 INFO L495 AbstractCegarLoop]: Abstraction has 7083 states and 9621 transitions. [2022-11-02 19:58:56,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:56,211 INFO L276 IsEmpty]: Start isEmpty. Operand 7083 states and 9621 transitions. [2022-11-02 19:58:56,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:56,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:56,216 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:56,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:56,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:56,416 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:56,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:56,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1792881563, now seen corresponding path program 1 times [2022-11-02 19:58:56,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:56,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522660095] [2022-11-02 19:58:56,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:56,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:56,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:56,419 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:56,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 19:58:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:56,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:58:56,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:57,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:57,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:57,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522660095] [2022-11-02 19:58:57,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522660095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:57,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:57,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:58:57,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214138588] [2022-11-02 19:58:57,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:57,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:58:57,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:57,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:58:57,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:58:57,035 INFO L87 Difference]: Start difference. First operand 7083 states and 9621 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:57,107 INFO L93 Difference]: Finished difference Result 11147 states and 15409 transitions. [2022-11-02 19:58:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:58:57,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:57,114 INFO L225 Difference]: With dead ends: 11147 [2022-11-02 19:58:57,114 INFO L226 Difference]: Without dead ends: 9158 [2022-11-02 19:58:57,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:58:57,117 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 689 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:57,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 1475 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:57,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9158 states. [2022-11-02 19:58:57,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9158 to 7091. [2022-11-02 19:58:57,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7091 states, 7090 states have (on average 1.3585331452750353) internal successors, (9632), 7090 states have internal predecessors, (9632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:57,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7091 states to 7091 states and 9632 transitions. [2022-11-02 19:58:57,206 INFO L78 Accepts]: Start accepts. Automaton has 7091 states and 9632 transitions. Word has length 256 [2022-11-02 19:58:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:57,206 INFO L495 AbstractCegarLoop]: Abstraction has 7091 states and 9632 transitions. [2022-11-02 19:58:57,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 7091 states and 9632 transitions. [2022-11-02 19:58:57,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:57,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:57,213 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:57,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-11-02 19:58:57,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:57,426 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:57,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:57,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1177229539, now seen corresponding path program 1 times [2022-11-02 19:58:57,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:57,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652687745] [2022-11-02 19:58:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:57,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:57,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:57,429 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:57,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 19:58:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:57,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:57,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:58,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:58,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:58,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652687745] [2022-11-02 19:58:58,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652687745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:58,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:58,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:58,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691381462] [2022-11-02 19:58:58,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:58,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:58,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:58,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:58,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:58,306 INFO L87 Difference]: Start difference. First operand 7091 states and 9632 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:58,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:58,905 INFO L93 Difference]: Finished difference Result 12102 states and 16747 transitions. [2022-11-02 19:58:58,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:58:58,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:58:58,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:58,913 INFO L225 Difference]: With dead ends: 12102 [2022-11-02 19:58:58,913 INFO L226 Difference]: Without dead ends: 10113 [2022-11-02 19:58:58,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:58:58,918 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 3246 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3246 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:58,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3246 Valid, 2665 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:58:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10113 states. [2022-11-02 19:58:58,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10113 to 7145. [2022-11-02 19:58:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7145 states, 7144 states have (on average 1.3583426651735722) internal successors, (9704), 7144 states have internal predecessors, (9704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:59,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 9704 transitions. [2022-11-02 19:58:59,005 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 9704 transitions. Word has length 256 [2022-11-02 19:58:59,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:59,005 INFO L495 AbstractCegarLoop]: Abstraction has 7145 states and 9704 transitions. [2022-11-02 19:58:59,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 9704 transitions. [2022-11-02 19:58:59,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:58:59,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:59,012 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:59,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:59,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:59,229 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:59,229 INFO L85 PathProgramCache]: Analyzing trace with hash 2059899679, now seen corresponding path program 1 times [2022-11-02 19:58:59,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:59,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217403780] [2022-11-02 19:58:59,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:59,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:59,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:59,231 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:59,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 19:58:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:59,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:58:59,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:00,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:00,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:00,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217403780] [2022-11-02 19:59:00,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217403780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:00,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:00,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:59:00,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665808624] [2022-11-02 19:59:00,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:00,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:59:00,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:00,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:59:00,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:59:00,254 INFO L87 Difference]: Start difference. First operand 7145 states and 9704 transitions. Second operand has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:00,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:00,525 INFO L93 Difference]: Finished difference Result 11567 states and 15976 transitions. [2022-11-02 19:59:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:59:00,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:00,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:00,533 INFO L225 Difference]: With dead ends: 11567 [2022-11-02 19:59:00,533 INFO L226 Difference]: Without dead ends: 9550 [2022-11-02 19:59:00,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:59:00,537 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1423 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:00,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 2089 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:00,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9550 states. [2022-11-02 19:59:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9550 to 7353. [2022-11-02 19:59:00,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7353 states, 7352 states have (on average 1.3577257889009793) internal successors, (9982), 7352 states have internal predecessors, (9982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:00,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7353 states to 7353 states and 9982 transitions. [2022-11-02 19:59:00,596 INFO L78 Accepts]: Start accepts. Automaton has 7353 states and 9982 transitions. Word has length 256 [2022-11-02 19:59:00,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:00,596 INFO L495 AbstractCegarLoop]: Abstraction has 7353 states and 9982 transitions. [2022-11-02 19:59:00,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:00,596 INFO L276 IsEmpty]: Start isEmpty. Operand 7353 states and 9982 transitions. [2022-11-02 19:59:00,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:00,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:00,600 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:00,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-11-02 19:59:00,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:00,801 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:00,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:00,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2086965281, now seen corresponding path program 1 times [2022-11-02 19:59:00,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:00,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880726720] [2022-11-02 19:59:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:00,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:00,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:00,803 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:00,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 19:59:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:01,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:59:01,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:01,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:01,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:01,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880726720] [2022-11-02 19:59:01,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880726720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:01,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:01,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:59:01,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392418974] [2022-11-02 19:59:01,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:01,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:59:01,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:01,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:59:01,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:59:01,854 INFO L87 Difference]: Start difference. First operand 7353 states and 9982 transitions. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:02,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:02,252 INFO L93 Difference]: Finished difference Result 13732 states and 19041 transitions. [2022-11-02 19:59:02,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:59:02,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:02,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:02,259 INFO L225 Difference]: With dead ends: 13732 [2022-11-02 19:59:02,259 INFO L226 Difference]: Without dead ends: 11607 [2022-11-02 19:59:02,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:59:02,263 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 2156 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2156 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:02,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2156 Valid, 2828 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:59:02,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11607 states. [2022-11-02 19:59:02,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11607 to 7361. [2022-11-02 19:59:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7361 states, 7360 states have (on average 1.3577445652173914) internal successors, (9993), 7360 states have internal predecessors, (9993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:02,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7361 states to 7361 states and 9993 transitions. [2022-11-02 19:59:02,335 INFO L78 Accepts]: Start accepts. Automaton has 7361 states and 9993 transitions. Word has length 256 [2022-11-02 19:59:02,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:02,335 INFO L495 AbstractCegarLoop]: Abstraction has 7361 states and 9993 transitions. [2022-11-02 19:59:02,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:02,336 INFO L276 IsEmpty]: Start isEmpty. Operand 7361 states and 9993 transitions. [2022-11-02 19:59:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:02,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:02,340 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:02,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-02 19:59:02,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:02,540 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:02,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:02,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1594339107, now seen corresponding path program 1 times [2022-11-02 19:59:02,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:02,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303037831] [2022-11-02 19:59:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:02,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:02,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:02,543 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:02,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 19:59:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:02,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:59:02,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:03,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:03,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:03,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303037831] [2022-11-02 19:59:03,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303037831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:03,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:03,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:59:03,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999998807] [2022-11-02 19:59:03,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:03,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:59:03,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:03,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:59:03,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:59:03,182 INFO L87 Difference]: Start difference. First operand 7361 states and 9993 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:03,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:03,250 INFO L93 Difference]: Finished difference Result 11723 states and 16190 transitions. [2022-11-02 19:59:03,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:59:03,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:03,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:03,256 INFO L225 Difference]: With dead ends: 11723 [2022-11-02 19:59:03,257 INFO L226 Difference]: Without dead ends: 9590 [2022-11-02 19:59:03,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:59:03,260 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 643 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:03,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1474 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:59:03,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9590 states. [2022-11-02 19:59:03,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9590 to 7397. [2022-11-02 19:59:03,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7397 states, 7396 states have (on average 1.3577609518658735) internal successors, (10042), 7396 states have internal predecessors, (10042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:03,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7397 states to 7397 states and 10042 transitions. [2022-11-02 19:59:03,342 INFO L78 Accepts]: Start accepts. Automaton has 7397 states and 10042 transitions. Word has length 256 [2022-11-02 19:59:03,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:03,342 INFO L495 AbstractCegarLoop]: Abstraction has 7397 states and 10042 transitions. [2022-11-02 19:59:03,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:03,343 INFO L276 IsEmpty]: Start isEmpty. Operand 7397 states and 10042 transitions. [2022-11-02 19:59:03,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:03,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:03,347 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:03,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:03,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:03,548 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:03,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:03,549 INFO L85 PathProgramCache]: Analyzing trace with hash -91840731, now seen corresponding path program 1 times [2022-11-02 19:59:03,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:03,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741499113] [2022-11-02 19:59:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:03,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:03,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:03,550 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:03,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 19:59:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:03,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:59:03,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:04,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:04,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:04,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741499113] [2022-11-02 19:59:04,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741499113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:04,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:04,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:04,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819476926] [2022-11-02 19:59:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:04,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:04,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:04,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:04,408 INFO L87 Difference]: Start difference. First operand 7397 states and 10042 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:04,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:04,952 INFO L93 Difference]: Finished difference Result 12300 states and 17005 transitions. [2022-11-02 19:59:04,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:59:04,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:04,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:04,958 INFO L225 Difference]: With dead ends: 12300 [2022-11-02 19:59:04,959 INFO L226 Difference]: Without dead ends: 10167 [2022-11-02 19:59:04,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:59:04,962 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 3126 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3126 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:04,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3126 Valid, 2676 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:59:04,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10167 states. [2022-11-02 19:59:05,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10167 to 7455. [2022-11-02 19:59:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7455 states, 7454 states have (on average 1.3580627850818352) internal successors, (10123), 7454 states have internal predecessors, (10123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7455 states to 7455 states and 10123 transitions. [2022-11-02 19:59:05,052 INFO L78 Accepts]: Start accepts. Automaton has 7455 states and 10123 transitions. Word has length 256 [2022-11-02 19:59:05,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:05,052 INFO L495 AbstractCegarLoop]: Abstraction has 7455 states and 10123 transitions. [2022-11-02 19:59:05,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:05,052 INFO L276 IsEmpty]: Start isEmpty. Operand 7455 states and 10123 transitions. [2022-11-02 19:59:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:05,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:05,057 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:05,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:05,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:05,270 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:05,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:05,271 INFO L85 PathProgramCache]: Analyzing trace with hash -509237337, now seen corresponding path program 1 times [2022-11-02 19:59:05,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:05,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304565466] [2022-11-02 19:59:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:05,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:05,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:05,273 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:05,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 19:59:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:05,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:59:05,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:06,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:06,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:06,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304565466] [2022-11-02 19:59:06,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304565466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:06,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:06,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:59:06,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342897815] [2022-11-02 19:59:06,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:06,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:59:06,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:59:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:59:06,261 INFO L87 Difference]: Start difference. First operand 7455 states and 10123 transitions. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:06,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:06,617 INFO L93 Difference]: Finished difference Result 13928 states and 19310 transitions. [2022-11-02 19:59:06,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:59:06,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:06,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:06,624 INFO L225 Difference]: With dead ends: 13928 [2022-11-02 19:59:06,624 INFO L226 Difference]: Without dead ends: 11765 [2022-11-02 19:59:06,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:59:06,628 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 2149 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:06,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2149 Valid, 2837 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:06,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11765 states. [2022-11-02 19:59:06,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11765 to 7477. [2022-11-02 19:59:06,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7477 states, 7476 states have (on average 1.3579454253611556) internal successors, (10152), 7476 states have internal predecessors, (10152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7477 states to 7477 states and 10152 transitions. [2022-11-02 19:59:06,718 INFO L78 Accepts]: Start accepts. Automaton has 7477 states and 10152 transitions. Word has length 256 [2022-11-02 19:59:06,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:06,718 INFO L495 AbstractCegarLoop]: Abstraction has 7477 states and 10152 transitions. [2022-11-02 19:59:06,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:06,718 INFO L276 IsEmpty]: Start isEmpty. Operand 7477 states and 10152 transitions. [2022-11-02 19:59:06,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:06,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:06,722 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:06,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:06,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:06,923 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:06,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:06,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1452337321, now seen corresponding path program 1 times [2022-11-02 19:59:06,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:06,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014010986] [2022-11-02 19:59:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:06,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:06,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:06,925 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:06,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 19:59:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:07,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:59:07,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:07,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:07,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:07,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014010986] [2022-11-02 19:59:07,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014010986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:07,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:07,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:07,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531073949] [2022-11-02 19:59:07,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:07,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:07,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:07,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:07,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:07,784 INFO L87 Difference]: Start difference. First operand 7477 states and 10152 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:08,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:08,331 INFO L93 Difference]: Finished difference Result 12584 states and 17392 transitions. [2022-11-02 19:59:08,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:59:08,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:08,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:08,340 INFO L225 Difference]: With dead ends: 12584 [2022-11-02 19:59:08,340 INFO L226 Difference]: Without dead ends: 10407 [2022-11-02 19:59:08,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:59:08,343 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 3164 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3164 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:08,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3164 Valid, 2689 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:59:08,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10407 states. [2022-11-02 19:59:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10407 to 7487. [2022-11-02 19:59:08,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7487 states, 7486 states have (on average 1.3578680203045685) internal successors, (10165), 7486 states have internal predecessors, (10165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7487 states to 7487 states and 10165 transitions. [2022-11-02 19:59:08,444 INFO L78 Accepts]: Start accepts. Automaton has 7487 states and 10165 transitions. Word has length 256 [2022-11-02 19:59:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:08,444 INFO L495 AbstractCegarLoop]: Abstraction has 7487 states and 10165 transitions. [2022-11-02 19:59:08,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:08,444 INFO L276 IsEmpty]: Start isEmpty. Operand 7487 states and 10165 transitions. [2022-11-02 19:59:08,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:08,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:08,454 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:08,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:08,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:08,671 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:08,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1455844565, now seen corresponding path program 1 times [2022-11-02 19:59:08,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:08,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530405032] [2022-11-02 19:59:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:08,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:08,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:08,674 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:08,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 19:59:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:09,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 19:59:09,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:09,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:09,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:09,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530405032] [2022-11-02 19:59:09,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530405032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:09,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:09,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 19:59:09,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552655095] [2022-11-02 19:59:09,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:09,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 19:59:09,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:09,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 19:59:09,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:59:09,445 INFO L87 Difference]: Start difference. First operand 7487 states and 10165 transitions. Second operand has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:09,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:09,938 INFO L93 Difference]: Finished difference Result 12903 states and 17758 transitions. [2022-11-02 19:59:09,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:59:09,938 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:09,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:09,944 INFO L225 Difference]: With dead ends: 12903 [2022-11-02 19:59:09,944 INFO L226 Difference]: Without dead ends: 10716 [2022-11-02 19:59:09,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:59:09,947 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 3167 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3167 SdHoareTripleChecker+Valid, 4131 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:09,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3167 Valid, 4131 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:59:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10716 states. [2022-11-02 19:59:10,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10716 to 8301. [2022-11-02 19:59:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8301 states, 8300 states have (on average 1.3525301204819278) internal successors, (11226), 8300 states have internal predecessors, (11226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:10,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8301 states to 8301 states and 11226 transitions. [2022-11-02 19:59:10,028 INFO L78 Accepts]: Start accepts. Automaton has 8301 states and 11226 transitions. Word has length 256 [2022-11-02 19:59:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:10,028 INFO L495 AbstractCegarLoop]: Abstraction has 8301 states and 11226 transitions. [2022-11-02 19:59:10,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:10,029 INFO L276 IsEmpty]: Start isEmpty. Operand 8301 states and 11226 transitions. [2022-11-02 19:59:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:10,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:10,034 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:10,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:10,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:10,234 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:10,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:10,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1011943891, now seen corresponding path program 1 times [2022-11-02 19:59:10,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:10,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685020566] [2022-11-02 19:59:10,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:10,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:10,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:10,236 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:10,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 19:59:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:10,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:59:10,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:11,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:11,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:11,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:11,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685020566] [2022-11-02 19:59:11,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685020566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:11,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:11,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:11,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122146028] [2022-11-02 19:59:11,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:11,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:11,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:11,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:11,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:11,023 INFO L87 Difference]: Start difference. First operand 8301 states and 11226 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:11,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:11,585 INFO L93 Difference]: Finished difference Result 13378 states and 18411 transitions. [2022-11-02 19:59:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:59:11,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:11,591 INFO L225 Difference]: With dead ends: 13378 [2022-11-02 19:59:11,591 INFO L226 Difference]: Without dead ends: 11191 [2022-11-02 19:59:11,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:59:11,594 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 3545 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3545 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:11,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 2423 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:59:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11191 states. [2022-11-02 19:59:11,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11191 to 8747. [2022-11-02 19:59:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8747 states, 8746 states have (on average 1.3538760576263436) internal successors, (11841), 8746 states have internal predecessors, (11841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8747 states to 8747 states and 11841 transitions. [2022-11-02 19:59:11,665 INFO L78 Accepts]: Start accepts. Automaton has 8747 states and 11841 transitions. Word has length 256 [2022-11-02 19:59:11,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:11,665 INFO L495 AbstractCegarLoop]: Abstraction has 8747 states and 11841 transitions. [2022-11-02 19:59:11,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 8747 states and 11841 transitions. [2022-11-02 19:59:11,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:11,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:11,671 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:11,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:11,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:11,885 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:11,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:11,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1254437295, now seen corresponding path program 1 times [2022-11-02 19:59:11,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:11,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425128501] [2022-11-02 19:59:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:11,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:11,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:11,887 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:11,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-02 19:59:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:12,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:59:12,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:12,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:12,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:12,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425128501] [2022-11-02 19:59:12,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425128501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:12,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:12,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:59:12,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282730828] [2022-11-02 19:59:12,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:12,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:59:12,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:12,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:59:12,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:59:12,913 INFO L87 Difference]: Start difference. First operand 8747 states and 11841 transitions. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:13,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:13,269 INFO L93 Difference]: Finished difference Result 15696 states and 21700 transitions. [2022-11-02 19:59:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:59:13,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:13,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:13,277 INFO L225 Difference]: With dead ends: 15696 [2022-11-02 19:59:13,277 INFO L226 Difference]: Without dead ends: 13349 [2022-11-02 19:59:13,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:59:13,280 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 2123 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:13,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 2855 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:13,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13349 states. [2022-11-02 19:59:13,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13349 to 8809. [2022-11-02 19:59:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8809 states, 8808 states have (on average 1.3539963669391462) internal successors, (11926), 8808 states have internal predecessors, (11926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8809 states to 8809 states and 11926 transitions. [2022-11-02 19:59:13,351 INFO L78 Accepts]: Start accepts. Automaton has 8809 states and 11926 transitions. Word has length 256 [2022-11-02 19:59:13,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:13,351 INFO L495 AbstractCegarLoop]: Abstraction has 8809 states and 11926 transitions. [2022-11-02 19:59:13,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:13,351 INFO L276 IsEmpty]: Start isEmpty. Operand 8809 states and 11926 transitions. [2022-11-02 19:59:13,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:13,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:13,356 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:13,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-11-02 19:59:13,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:13,557 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:13,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:13,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1238918577, now seen corresponding path program 1 times [2022-11-02 19:59:13,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:13,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136274775] [2022-11-02 19:59:13,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:13,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:13,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:13,560 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:13,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-02 19:59:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:13,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:59:13,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:14,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:14,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:14,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136274775] [2022-11-02 19:59:14,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136274775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:14,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:14,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:59:14,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676326489] [2022-11-02 19:59:14,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:14,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:59:14,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:14,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:59:14,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:59:14,220 INFO L87 Difference]: Start difference. First operand 8809 states and 11926 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:14,291 INFO L93 Difference]: Finished difference Result 13715 states and 18882 transitions. [2022-11-02 19:59:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:59:14,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:14,300 INFO L225 Difference]: With dead ends: 13715 [2022-11-02 19:59:14,300 INFO L226 Difference]: Without dead ends: 11334 [2022-11-02 19:59:14,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:59:14,303 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 592 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:14,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 1473 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:59:14,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11334 states. [2022-11-02 19:59:14,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11334 to 8913. [2022-11-02 19:59:14,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8913 states, 8912 states have (on average 1.3539048473967683) internal successors, (12066), 8912 states have internal predecessors, (12066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8913 states to 8913 states and 12066 transitions. [2022-11-02 19:59:14,371 INFO L78 Accepts]: Start accepts. Automaton has 8913 states and 12066 transitions. Word has length 256 [2022-11-02 19:59:14,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:14,371 INFO L495 AbstractCegarLoop]: Abstraction has 8913 states and 12066 transitions. [2022-11-02 19:59:14,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:14,372 INFO L276 IsEmpty]: Start isEmpty. Operand 8913 states and 12066 transitions. [2022-11-02 19:59:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:14,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:14,379 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:14,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:14,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:14,580 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:14,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2132404915, now seen corresponding path program 1 times [2022-11-02 19:59:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:14,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127202428] [2022-11-02 19:59:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:14,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:14,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:14,582 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:14,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-02 19:59:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:59:15,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:15,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:15,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:15,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:15,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127202428] [2022-11-02 19:59:15,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127202428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:15,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:15,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:59:15,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501299451] [2022-11-02 19:59:15,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:15,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:59:15,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:15,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:59:15,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:59:15,702 INFO L87 Difference]: Start difference. First operand 8913 states and 12066 transitions. Second operand has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:15,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:15,947 INFO L93 Difference]: Finished difference Result 13733 states and 18906 transitions. [2022-11-02 19:59:15,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:59:15,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:15,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:15,956 INFO L225 Difference]: With dead ends: 13733 [2022-11-02 19:59:15,956 INFO L226 Difference]: Without dead ends: 11352 [2022-11-02 19:59:15,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:59:15,961 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 1379 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:15,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 2141 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11352 states. [2022-11-02 19:59:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11352 to 8927. [2022-11-02 19:59:16,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8927 states, 8926 states have (on average 1.3539099260587049) internal successors, (12085), 8926 states have internal predecessors, (12085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8927 states to 8927 states and 12085 transitions. [2022-11-02 19:59:16,034 INFO L78 Accepts]: Start accepts. Automaton has 8927 states and 12085 transitions. Word has length 256 [2022-11-02 19:59:16,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:16,034 INFO L495 AbstractCegarLoop]: Abstraction has 8927 states and 12085 transitions. [2022-11-02 19:59:16,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:16,034 INFO L276 IsEmpty]: Start isEmpty. Operand 8927 states and 12085 transitions. [2022-11-02 19:59:16,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:16,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:16,039 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:16,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-02 19:59:16,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:16,240 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:16,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:16,240 INFO L85 PathProgramCache]: Analyzing trace with hash 287037749, now seen corresponding path program 1 times [2022-11-02 19:59:16,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:16,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574711812] [2022-11-02 19:59:16,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:16,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:16,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:16,242 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:16,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-02 19:59:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:16,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:59:16,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:16,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:16,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:16,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:16,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574711812] [2022-11-02 19:59:16,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574711812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:16,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:16,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:59:16,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735031402] [2022-11-02 19:59:16,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:16,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:59:16,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:16,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:59:16,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:59:16,970 INFO L87 Difference]: Start difference. First operand 8927 states and 12085 transitions. Second operand has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:17,148 INFO L93 Difference]: Finished difference Result 15171 states and 20853 transitions. [2022-11-02 19:59:17,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:59:17,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:17,157 INFO L225 Difference]: With dead ends: 15171 [2022-11-02 19:59:17,157 INFO L226 Difference]: Without dead ends: 12780 [2022-11-02 19:59:17,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:17,163 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 723 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:17,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 3040 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-11-02 19:59:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12780 states. [2022-11-02 19:59:17,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12780 to 10017. [2022-11-02 19:59:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10017 states, 10016 states have (on average 1.3519369009584665) internal successors, (13541), 10016 states have internal predecessors, (13541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10017 states to 10017 states and 13541 transitions. [2022-11-02 19:59:17,263 INFO L78 Accepts]: Start accepts. Automaton has 10017 states and 13541 transitions. Word has length 256 [2022-11-02 19:59:17,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:17,263 INFO L495 AbstractCegarLoop]: Abstraction has 10017 states and 13541 transitions. [2022-11-02 19:59:17,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:17,263 INFO L276 IsEmpty]: Start isEmpty. Operand 10017 states and 13541 transitions. [2022-11-02 19:59:17,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:17,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:17,268 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:17,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-02 19:59:17,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:17,469 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:17,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:17,469 INFO L85 PathProgramCache]: Analyzing trace with hash 946569271, now seen corresponding path program 1 times [2022-11-02 19:59:17,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:17,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318158525] [2022-11-02 19:59:17,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:17,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:17,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:17,471 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:17,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-02 19:59:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:17,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:59:17,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:18,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:18,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:18,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318158525] [2022-11-02 19:59:18,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318158525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:18,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:18,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:59:18,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233365173] [2022-11-02 19:59:18,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:18,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:59:18,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:18,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:59:18,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:59:18,570 INFO L87 Difference]: Start difference. First operand 10017 states and 13541 transitions. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:18,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:18,945 INFO L93 Difference]: Finished difference Result 17196 states and 23724 transitions. [2022-11-02 19:59:18,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:59:18,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:18,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:18,954 INFO L225 Difference]: With dead ends: 17196 [2022-11-02 19:59:18,954 INFO L226 Difference]: Without dead ends: 14805 [2022-11-02 19:59:18,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:59:18,958 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 2275 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2275 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:18,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2275 Valid, 2880 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:18,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14805 states. [2022-11-02 19:59:19,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14805 to 10027. [2022-11-02 19:59:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10027 states, 10026 states have (on average 1.3518850987432676) internal successors, (13554), 10026 states have internal predecessors, (13554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10027 states to 10027 states and 13554 transitions. [2022-11-02 19:59:19,073 INFO L78 Accepts]: Start accepts. Automaton has 10027 states and 13554 transitions. Word has length 256 [2022-11-02 19:59:19,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:19,074 INFO L495 AbstractCegarLoop]: Abstraction has 10027 states and 13554 transitions. [2022-11-02 19:59:19,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:19,074 INFO L276 IsEmpty]: Start isEmpty. Operand 10027 states and 13554 transitions. [2022-11-02 19:59:19,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:19,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:19,079 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:19,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2022-11-02 19:59:19,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:19,280 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:19,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:19,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1648169145, now seen corresponding path program 1 times [2022-11-02 19:59:19,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:19,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239009933] [2022-11-02 19:59:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:19,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:19,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:19,282 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:19,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-02 19:59:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:19,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:59:19,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:19,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:19,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:19,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239009933] [2022-11-02 19:59:19,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239009933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:19,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:19,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:59:19,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773744534] [2022-11-02 19:59:19,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:19,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:59:19,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:19,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:59:19,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:59:19,960 INFO L87 Difference]: Start difference. First operand 10027 states and 13554 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:20,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:20,037 INFO L93 Difference]: Finished difference Result 14879 states and 20438 transitions. [2022-11-02 19:59:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:59:20,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:20,046 INFO L225 Difference]: With dead ends: 14879 [2022-11-02 19:59:20,047 INFO L226 Difference]: Without dead ends: 12480 [2022-11-02 19:59:20,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:59:20,050 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 546 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:20,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1472 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:59:20,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12480 states. [2022-11-02 19:59:20,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12480 to 10059. [2022-11-02 19:59:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10059 states, 10058 states have (on average 1.352058063233247) internal successors, (13599), 10058 states have internal predecessors, (13599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:20,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10059 states to 10059 states and 13599 transitions. [2022-11-02 19:59:20,124 INFO L78 Accepts]: Start accepts. Automaton has 10059 states and 13599 transitions. Word has length 256 [2022-11-02 19:59:20,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:20,125 INFO L495 AbstractCegarLoop]: Abstraction has 10059 states and 13599 transitions. [2022-11-02 19:59:20,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:20,125 INFO L276 IsEmpty]: Start isEmpty. Operand 10059 states and 13599 transitions. [2022-11-02 19:59:20,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:20,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:20,130 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:20,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2022-11-02 19:59:20,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:20,330 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:20,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:20,331 INFO L85 PathProgramCache]: Analyzing trace with hash -723570117, now seen corresponding path program 1 times [2022-11-02 19:59:20,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:20,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347702367] [2022-11-02 19:59:20,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:20,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:20,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:20,333 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:20,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-02 19:59:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:20,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:59:20,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:21,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:21,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:21,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:21,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347702367] [2022-11-02 19:59:21,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347702367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:21,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:21,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:59:21,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591526253] [2022-11-02 19:59:21,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:21,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:59:21,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:21,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:59:21,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:59:21,462 INFO L87 Difference]: Start difference. First operand 10059 states and 13599 transitions. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:21,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:21,830 INFO L93 Difference]: Finished difference Result 17248 states and 23795 transitions. [2022-11-02 19:59:21,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:59:21,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:21,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:21,839 INFO L225 Difference]: With dead ends: 17248 [2022-11-02 19:59:21,839 INFO L226 Difference]: Without dead ends: 14849 [2022-11-02 19:59:21,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:59:21,843 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 2268 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:21,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2268 Valid, 2889 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14849 states. [2022-11-02 19:59:21,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14849 to 10071. [2022-11-02 19:59:21,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10071 states, 10070 states have (on average 1.352035749751738) internal successors, (13615), 10070 states have internal predecessors, (13615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10071 states to 10071 states and 13615 transitions. [2022-11-02 19:59:21,927 INFO L78 Accepts]: Start accepts. Automaton has 10071 states and 13615 transitions. Word has length 256 [2022-11-02 19:59:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:21,927 INFO L495 AbstractCegarLoop]: Abstraction has 10071 states and 13615 transitions. [2022-11-02 19:59:21,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:21,927 INFO L276 IsEmpty]: Start isEmpty. Operand 10071 states and 13615 transitions. [2022-11-02 19:59:21,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:21,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:21,932 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:21,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:22,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:22,133 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:22,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:22,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1765958845, now seen corresponding path program 1 times [2022-11-02 19:59:22,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:22,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073229249] [2022-11-02 19:59:22,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:22,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:22,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:22,135 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:22,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-02 19:59:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:22,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:59:22,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:22,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:22,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:22,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073229249] [2022-11-02 19:59:22,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073229249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:22,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:22,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:59:22,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807563246] [2022-11-02 19:59:22,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:22,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:59:22,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:22,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:59:22,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:59:22,821 INFO L87 Difference]: Start difference. First operand 10071 states and 13615 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:22,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:22,894 INFO L93 Difference]: Finished difference Result 14911 states and 20480 transitions. [2022-11-02 19:59:22,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:59:22,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:22,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:22,902 INFO L225 Difference]: With dead ends: 14911 [2022-11-02 19:59:22,903 INFO L226 Difference]: Without dead ends: 12504 [2022-11-02 19:59:22,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:59:22,906 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 525 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:22,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1471 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:59:22,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12504 states. [2022-11-02 19:59:22,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12504 to 10083. [2022-11-02 19:59:22,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10083 states, 10082 states have (on average 1.3520134893870264) internal successors, (13631), 10082 states have internal predecessors, (13631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:22,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10083 states to 10083 states and 13631 transitions. [2022-11-02 19:59:22,984 INFO L78 Accepts]: Start accepts. Automaton has 10083 states and 13631 transitions. Word has length 256 [2022-11-02 19:59:22,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:22,984 INFO L495 AbstractCegarLoop]: Abstraction has 10083 states and 13631 transitions. [2022-11-02 19:59:22,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:22,984 INFO L276 IsEmpty]: Start isEmpty. Operand 10083 states and 13631 transitions. [2022-11-02 19:59:22,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:22,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:22,990 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:23,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:23,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:23,190 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:23,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:23,191 INFO L85 PathProgramCache]: Analyzing trace with hash 77015103, now seen corresponding path program 1 times [2022-11-02 19:59:23,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:23,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073439445] [2022-11-02 19:59:23,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:23,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:23,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:23,193 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:23,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-02 19:59:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:59:23,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:24,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:24,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:24,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073439445] [2022-11-02 19:59:24,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073439445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:24,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:24,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:24,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539692583] [2022-11-02 19:59:24,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:24,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:24,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:24,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:24,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:24,116 INFO L87 Difference]: Start difference. First operand 10083 states and 13631 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:24,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:24,666 INFO L93 Difference]: Finished difference Result 15884 states and 21833 transitions. [2022-11-02 19:59:24,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:59:24,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:24,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:24,675 INFO L225 Difference]: With dead ends: 15884 [2022-11-02 19:59:24,675 INFO L226 Difference]: Without dead ends: 13477 [2022-11-02 19:59:24,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:59:24,678 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 3144 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3144 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:24,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3144 Valid, 2734 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:59:24,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13477 states. [2022-11-02 19:59:24,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13477 to 10297. [2022-11-02 19:59:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10297 states, 10296 states have (on average 1.3517871017871017) internal successors, (13918), 10296 states have internal predecessors, (13918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10297 states to 10297 states and 13918 transitions. [2022-11-02 19:59:24,757 INFO L78 Accepts]: Start accepts. Automaton has 10297 states and 13918 transitions. Word has length 256 [2022-11-02 19:59:24,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:24,758 INFO L495 AbstractCegarLoop]: Abstraction has 10297 states and 13918 transitions. [2022-11-02 19:59:24,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:24,758 INFO L276 IsEmpty]: Start isEmpty. Operand 10297 states and 13918 transitions. [2022-11-02 19:59:24,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:24,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:24,764 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:24,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:24,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:24,980 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:24,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:24,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1511332799, now seen corresponding path program 1 times [2022-11-02 19:59:24,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:24,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168520283] [2022-11-02 19:59:24,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:24,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:24,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:24,983 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:24,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-02 19:59:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:59:25,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:26,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:26,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:26,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168520283] [2022-11-02 19:59:26,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168520283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:26,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:26,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:59:26,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799550652] [2022-11-02 19:59:26,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:26,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:59:26,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:26,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:59:26,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:59:26,149 INFO L87 Difference]: Start difference. First operand 10297 states and 13918 transitions. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:26,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:26,548 INFO L93 Difference]: Finished difference Result 17704 states and 24418 transitions. [2022-11-02 19:59:26,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:59:26,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:26,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:26,559 INFO L225 Difference]: With dead ends: 17704 [2022-11-02 19:59:26,559 INFO L226 Difference]: Without dead ends: 15219 [2022-11-02 19:59:26,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:59:26,564 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 2261 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2261 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:26,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2261 Valid, 2898 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:59:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15219 states. [2022-11-02 19:59:26,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15219 to 10319. [2022-11-02 19:59:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10319 states, 10318 states have (on average 1.3517154487303742) internal successors, (13947), 10318 states have internal predecessors, (13947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:26,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10319 states to 10319 states and 13947 transitions. [2022-11-02 19:59:26,664 INFO L78 Accepts]: Start accepts. Automaton has 10319 states and 13947 transitions. Word has length 256 [2022-11-02 19:59:26,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:26,664 INFO L495 AbstractCegarLoop]: Abstraction has 10319 states and 13947 transitions. [2022-11-02 19:59:26,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 10319 states and 13947 transitions. [2022-11-02 19:59:26,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:26,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:26,672 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:26,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Ended with exit code 0 [2022-11-02 19:59:26,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:26,873 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:26,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:26,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1503770819, now seen corresponding path program 1 times [2022-11-02 19:59:26,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:26,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41740513] [2022-11-02 19:59:26,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:26,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:26,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:26,876 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:26,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-02 19:59:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:59:27,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:27,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:27,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:27,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41740513] [2022-11-02 19:59:27,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41740513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:27,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:27,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:27,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216410265] [2022-11-02 19:59:27,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:27,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:27,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:27,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:27,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:27,810 INFO L87 Difference]: Start difference. First operand 10319 states and 13947 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:28,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:28,357 INFO L93 Difference]: Finished difference Result 16216 states and 22296 transitions. [2022-11-02 19:59:28,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:59:28,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:28,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:28,368 INFO L225 Difference]: With dead ends: 16216 [2022-11-02 19:59:28,368 INFO L226 Difference]: Without dead ends: 13717 [2022-11-02 19:59:28,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:59:28,371 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 3182 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3182 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:28,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3182 Valid, 2754 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:59:28,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13717 states. [2022-11-02 19:59:28,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13717 to 10329. [2022-11-02 19:59:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10329 states, 10328 states have (on average 1.3516653756777692) internal successors, (13960), 10328 states have internal predecessors, (13960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10329 states to 10329 states and 13960 transitions. [2022-11-02 19:59:28,512 INFO L78 Accepts]: Start accepts. Automaton has 10329 states and 13960 transitions. Word has length 256 [2022-11-02 19:59:28,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:28,512 INFO L495 AbstractCegarLoop]: Abstraction has 10329 states and 13960 transitions. [2022-11-02 19:59:28,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:28,512 INFO L276 IsEmpty]: Start isEmpty. Operand 10329 states and 13960 transitions. [2022-11-02 19:59:28,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:28,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:28,517 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:28,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2022-11-02 19:59:28,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:28,718 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:28,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2111138107, now seen corresponding path program 1 times [2022-11-02 19:59:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:28,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062840799] [2022-11-02 19:59:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:28,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:28,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:28,721 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:28,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-02 19:59:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:29,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 19:59:29,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:29,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:29,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:29,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:29,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062840799] [2022-11-02 19:59:29,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062840799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:29,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:29,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 19:59:29,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455326345] [2022-11-02 19:59:29,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:29,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 19:59:29,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:29,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 19:59:29,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:59:29,492 INFO L87 Difference]: Start difference. First operand 10329 states and 13960 transitions. Second operand has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:29,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:29,981 INFO L93 Difference]: Finished difference Result 15731 states and 21586 transitions. [2022-11-02 19:59:29,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:59:29,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:29,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:29,989 INFO L225 Difference]: With dead ends: 15731 [2022-11-02 19:59:29,989 INFO L226 Difference]: Without dead ends: 13222 [2022-11-02 19:59:29,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:59:29,993 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 3664 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3664 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:29,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3664 Valid, 3547 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:59:29,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13222 states. [2022-11-02 19:59:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13222 to 10575. [2022-11-02 19:59:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10575 states, 10574 states have (on average 1.3507660298846227) internal successors, (14283), 10574 states have internal predecessors, (14283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10575 states to 10575 states and 14283 transitions. [2022-11-02 19:59:30,072 INFO L78 Accepts]: Start accepts. Automaton has 10575 states and 14283 transitions. Word has length 256 [2022-11-02 19:59:30,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:30,072 INFO L495 AbstractCegarLoop]: Abstraction has 10575 states and 14283 transitions. [2022-11-02 19:59:30,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.444444444444443) internal successors, (256), 9 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 10575 states and 14283 transitions. [2022-11-02 19:59:30,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:30,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:30,078 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:30,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Ended with exit code 0 [2022-11-02 19:59:30,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:30,279 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:30,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:30,279 INFO L85 PathProgramCache]: Analyzing trace with hash -336130745, now seen corresponding path program 1 times [2022-11-02 19:59:30,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:30,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870810197] [2022-11-02 19:59:30,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:30,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:30,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:30,281 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:30,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-02 19:59:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:30,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:59:30,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:31,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:31,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:31,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870810197] [2022-11-02 19:59:31,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870810197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:31,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:31,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:31,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908781562] [2022-11-02 19:59:31,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:31,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:31,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:31,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:31,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:31,109 INFO L87 Difference]: Start difference. First operand 10575 states and 14283 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:31,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:31,663 INFO L93 Difference]: Finished difference Result 16410 states and 22513 transitions. [2022-11-02 19:59:31,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:59:31,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-11-02 19:59:31,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:31,674 INFO L225 Difference]: With dead ends: 16410 [2022-11-02 19:59:31,674 INFO L226 Difference]: Without dead ends: 13901 [2022-11-02 19:59:31,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:59:31,679 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 3544 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3544 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:31,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3544 Valid, 2490 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:59:31,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13901 states. [2022-11-02 19:59:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13901 to 11133. [2022-11-02 19:59:31,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11133 states, 11132 states have (on average 1.350700682716493) internal successors, (15036), 11132 states have internal predecessors, (15036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:31,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11133 states to 11133 states and 15036 transitions. [2022-11-02 19:59:31,841 INFO L78 Accepts]: Start accepts. Automaton has 11133 states and 15036 transitions. Word has length 256 [2022-11-02 19:59:31,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:31,841 INFO L495 AbstractCegarLoop]: Abstraction has 11133 states and 15036 transitions. [2022-11-02 19:59:31,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 11133 states and 15036 transitions. [2022-11-02 19:59:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-02 19:59:31,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:31,847 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:31,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-02 19:59:32,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:32,048 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:32,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:32,048 INFO L85 PathProgramCache]: Analyzing trace with hash -334283703, now seen corresponding path program 1 times [2022-11-02 19:59:32,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:32,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025603963] [2022-11-02 19:59:32,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:32,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:32,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:32,050 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:32,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3418b433-3b8b-4d43-bda6-e850bec79fcb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-02 19:59:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:32,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-02 19:59:32,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:59:36,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:58,479 WARN L234 SmtUtils]: Spent 21.06s on a formula simplification. DAG size of input: 230 DAG size of output: 156 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:00:58,431 WARN L234 SmtUtils]: Spent 6.19s on a formula simplification that was a NOOP. DAG size: 165 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)